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Can You Use Pro-Mix Potting Soil For Vegetables | Pro Mix Soil Blends Explained – Promix Bx Hp Mp Mycorrhize Soilless 10730 Good Rating This Answer

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This versatile soil works great for both indoor and outdoor plantings and is suitable for growing vegetables, herbs, annuals and perennials.Pro Mix potting soil is peat-based potting soil designed for indoor and outdoor plants as well as seed starting and other garden needs. The ingredients are carefully selected to support vigorous growth, better moisture management, improved nutrient uptake, larger root systems, and healthier plants overall.PRO-MIX HP is a peat-based growing medium formualted with a high percentage of perlite. PRO-MIX HP and all PRO-MIX growing media products are ‘soilless’, meaning that they do not contain any mineral soil.

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Pro Mix Soil Blends Explained – ProMix BX HP MP Mycorrhize Soilless – Can you use Pro-Mix potting soil for vegetables, details of this topic

Pro-Mix BX is the ultimate general purpose soil blend answering the needs of most growing applications. Growers can benefit from the added vermiculite and pearlite providing proper drainage capacities and nutrient availablity. This blend with High quality fibrous Canadian Sphagnum Peat moss creates a well balanced growing medium. It is ideal for annuals, perennials, foliage plants, potted flowers, young plant propagation, vegetables, and greenhouse consumables. Pro Mix HP is the number one high porosity mix. HP contains a high perlite content, providing significant drainage capacity, increased air porosity and lower water retention. The added benefit of a fibrous peat moss and coarse perlite makes this formulation ideal for growers in need of a product adapted to their needs for watering flexibility. When seeking the ideal balance between air porosity, drainage capacity and water retention, PRO-MIX HP-CC MYCORRHIZAE is your solution. To reduce soil compaction, unique chunk coir and a carefully selected peat moss are added. This formulation provides conditions promoting growth and offering a delicate control over the growing environment. This mix makes it easy alleviating the concern of over-watering. A grower can easily leach fertilizer salts during the crop cycle. HP-CC MYCORRHIZAE™ is optimal for growers using hanging baskets, long term crops or mother plants. PRO-MIX® MP MYCORRHIZAE™ ORGANIK™ provides the perfect solution for growers in need of an organic-certified, growing medium that delivers well balanced air and water qualities. OMRI-Listed, this improved formulation is designed to meet crop requirements for certified organic growers. Beneficial throughout the lifetime of a plant, Pro-Mix MP is great for seed starting and won’t burn delicate young plants, and later in plant life improves the fertilizer uptake reducing plant food costs. Enriched with MYCORRHIZAE™, this product will not only maximize the overall growth and increase yields of your crops it will also increase plants’ resistance to environmental stresses. PRO-MIX BIOFUNGICIDE and MYCORRHIZAE are an added variety to many of the Pro-Mix product lines including BX, HP, LP15, BRK, and BRK20. BIOFUNGICIDE plus MYCORRHIZAE has all the benefits of mycorrhizae, plus protects the plant with the most advanced technology in bio-additives. A healthy thriving plant saves you time and money!. If you want to talk soiless and organic mix with our expert staff, visit or call us at the grow show in ann arbor, MI.. 734-677-0009 or view all our pro-mix available products online at the grow show dot org slash Pro-Mix!

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Is Pro Mix premium potting soil good for vegetables?

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PRO-MIX Organic Vegetable & Herb Potting Soil Mix – 2 cu. ft.

PRO-MIX® Organic Vegetable & Herb Mix is a ready-to-use, peat-based product designed to meet all vegetable, fruit, and herb garden needs.

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Pro Mix Soil Blends Explained - ProMix BX HP MP Mycorrhize Soilless
Pro Mix Soil Blends Explained – ProMix BX HP MP Mycorrhize Soilless

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  • Date Published: Jan 27, 2015
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What is pro mix soil used for?

Pro Mix potting soil is peat-based potting soil designed for indoor and outdoor plants as well as seed starting and other garden needs. The ingredients are carefully selected to support vigorous growth, better moisture management, improved nutrient uptake, larger root systems, and healthier plants overall.

Is Pro Mix considered soil?

PRO-MIX HP is a peat-based growing medium formualted with a high percentage of perlite. PRO-MIX HP and all PRO-MIX growing media products are ‘soilless’, meaning that they do not contain any mineral soil.

Can you use potting mix as garden soil?

Potting mix is essentially some combination of peat moss (or sometimes coco coir), compost or rotted wood, and perlite or vermiculite. Sometimes lime or slow-release granular fertilizer is included as well. All of these potting mix ingredients are perfectly suitable for use in the garden.

Is promix good for vegetables?

PRO-MIX Premium Organic Garden Mix is ideal for outdoor gardening projects, such as vegetables, herbs, flowers, seed starting, raised garden beds and containers. This high-quality peat-based garden soil is OMRI®-listed and approved for organic use. It’s your go-to option for tasty vegetables and organic growing.

What is the best potting soil for vegetables?

To grow a successful container vegetable garden, start with great soil—not soil from your yard, but what’s known as a potting mix. These mixes, like Miracle-Gro® Potting Soil, contain the right blend of materials like coir, peat moss and/or compost to create an ideal growing environment for roots inside a pot.

Is PRO-MIX good for seedlings?

PRO-MIX Ultimate Seed Starting Mix is the ideal peat-based growing mix for germinating seeds. This mix is great for germinating, vegetable, flower, herb seeds as well as for starting leaf, stem or root cuttings.

Does PRO-MIX have fertilizer in it?

Yes, PRO-MIX contains a starter fertilizer to help plants acclimate to a new rooting environment.

Is PRO-MIX soil or coco?

PRO-MIX HPCC is a High Porosity – Chunk Coir growing medium that contains a base of sphagnum peat moss, chunk coir and perlite.

Can you grow tomatoes in potting mix?

When planting tomatoes in a raised bed, use a 50-50 blend of garden soil and potting mix, or 100 percent organic Miracle-Gro® Performance Organics® Raised Bed Mix. When growing tomatoes in pots, choose a container that is at least 18 to 24 inches wide.

What is difference between potting mix and garden soil?

To put it simply, garden soil and potting soil are planting mediums that contain soil–– one used in the ground, the latter meant for pots. They can sometimes be purely dirt, like garden soil, and sometimes it is mixed with other organic materials, like potting soil. Potting mix, however, contains no soil at all.

Can I use potting mix in a raised garden bed?

Potting mix is too light for use in raised beds, while garden soil is too heavy. The “just right” solution is Miracle-Gro® Raised Bed Soil, a pre-mixed blend of the two.

Pro-Mix Soil Options

Here at Hook’s we use Pro-mix soils in all of our in house grown plants, because of the high quality of each of their premium soil mixes. Each Pro-mix soil mix is specially formulated to have unique properties to fit your gardening needs. Most Pro-mix soil mixes are labeled as Mycoactive, meaning that they contain high performance active ingredients that stimulate plant growth while controlling pests and diseases and reducing watering needs. Here at Hook’s we offer a number of Pro-mix potting soils listed below:

Premium Potting Mix is specially formulated for container gardening and features a water saving gel that reduces watering needs and is Mycoactive making it the ideal base for starting seeds or any container garden. Premium Potting Mix also contains a slow release fertilizer that feeds plants for up to 9 months. We offer Premium Potting Mix in a 8 qt bag for $5.99, a 1 cu ft bag for $8.99 and a 2 cu ft bag for $15.99.

Premium Garden Mix contains Mycoactive ingredients and a slow release fertilizer that feeds plants for up to 9 months making it a great base for planting outdoor plants and veggies. It is specially formulated with a high peat humus percentage making it perfect for perennials and flowering shrubs. We offer Premium Garden Mix in 1 cu ft bags for $8.99.

Premium All Purpose Mix is versatile and can be used for any indoor or outdoor planting. This mix contains a starter fertilizer, is Mycoactive and is formulated to be suitable for a variety of plant species. We offer Premium All Purpose Mix in a 2 cu ft compressed bale which contains 4 cu ft of soil when loose for $19.99, a 1.5 cu ft bag for 8.99 and in a 1 cu ft bag for $7.99.

BX Mycorrhizae contains mycorrhizae that help increase plant growth by enhancing the plant’s root system’s ability to uptake nutrients and water. This versatile soil works great for both indoor and outdoor plantings and is suitable for growing vegetables, herbs, annuals and perennials. We offer BX Mycorrhizae in a 3.8 cu ft compressed bale for $35.99.

Premium Organic Vegetable and Herb Mix contains an organic fertilizer that feeds plants for 3 months, formulated with all natural ingredients, suitable for all veggie and herb garden needs, Mycoactive, OMRI listed. We offer Premium Organic Vegetable and Herb Mix in a 1 cu ft bag for $8.99 and in a 2 cu ft bag for $15.99.

Premium Cactus Mix is a specially formulated Mycoactive mix designed to fit the needs of cacti and succulents. Premium Cactus Mix features good air porosity, is fast draining and contains an organic fertilizer that feeds plants for up to 3 months. We offer Premium Cactus Mix in an 8 qt bag for $5.99.

Vermiculite is a micaceous mineral is used to improve moisture and nutrient retention in a peat-based soil while also improving soil aeration. We offer Vermiculite in an 8 qt bag for $5.99.

Pro Mix Potting Soil Review (vs. Miracle-Gro)

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This year, I decided to try Pro Mix Potting Soil for my 2021 garden. Back in 2020, I got serious about gardening. The pandemic inspired many new gardeners to try a quarantine garden, and while I wasn’t new to gardening, I definitely dove back in head first. But after planting SO many seeds indoors, I noticed tons of gnats. So, I decided I needed a change from Miracle Gro.

I asked about favorite potting soil brands in one of my Facebook gardening groups and discovered a lot of gardeners actually don’t strictly use Miracle Gro potting soil! Some mentioned Black Gold soil and others mentioned FoxFarm.

Some serious gardeners talked about how they make their own DIY potting mixes every year. It sounds like it works out cheaper and involves a true labor of love!

Numerous recommendations poured in for Pro Mix Potting Soil, so I decided to give it a whirl.

ProMix Potting Soil Review vs. Miracle Grow Brand – Big bag of compressed Promix soil on our stone walkway

What is Pro Mix potting soil?

Pro Mix potting soil is peat-based potting soil designed for indoor and outdoor plants as well as seed starting and other garden needs. The ingredients are carefully selected to support vigorous growth, better moisture management, improved nutrient uptake, larger root systems, and healthier plants overall.

What is in Pro Mix potting soil?

The Pro Mix moisture mix contains Sphagnum peat moss (80-90%), natural coco coir fiber, perlite, ground limestone (for pH), mycorrhizae, and an undisclosed wetting agent. The organic garden mix contains a bit less peat but also includes Gypsum. Meanwhile, the Pro Mix All-Purpose Mix includes Canadian sphagnum peat moss, peat humus, perlite, limestone, and mycorrhizae (PTB297 technology).

Promix potting soil is a peat based potting mix.

Benefits of Pro Mix Soil

I loved Pro Mix soil from the first time I tried it this year (2021). It is now my go-to potting mix for the foreseeable future.

Here are the best benefits of Pro Mix Potting Soil:

Clean – From the first time using it, Pro Mix Potting Soil just felt cleaner and higher quality than any other potting mix I’ve used to date. The mix just didn’t feel as dirty as traditional potting soil.

From the first time using it, Pro Mix Potting Soil just felt cleaner and higher quality than any other potting mix I’ve used to date. The mix just didn’t feel as dirty as traditional potting soil. Affordable – The bag of Pro Mix ended up costing me about 40% less than the equivalent amount of Miracle Gro Potting Mix. The 2cu ft value pack saves money and includes a LOT of potting mix!

The bag of Pro Mix ended up costing me about 40% less than the equivalent amount of Miracle Gro Potting Mix. The 2cu ft value pack saves money and includes a LOT of potting mix! Compressed – Two cubic feet of potting mix fit into that bag of Pro Mix! It’s packed in tight to take up less space. The compressed potting soil limits packaging, resulting in 2x less bags per package.

Two cubic feet of potting mix fit into that bag of Pro Mix! It’s packed in tight to take up less space. The compressed potting soil limits packaging, resulting in 2x less bags per package. Convenient Package – The convenient packaging has a sturdy handle and a boxy shape that fits well in storage when not in use. The Pro Mix bag also holds its form after opening, keeping your garage and other spaces neat.

The convenient packaging has a sturdy handle and a boxy shape that fits well in storage when not in use. The Pro Mix bag also holds its form after opening, keeping your garage and other spaces neat. No Gnats – To my pure delight, I didn’t notice any fungus gnats, fruit flies, or other pests emerging from the soil. It’s been amazing, to say the least.

To my pure delight, I didn’t notice any fungus gnats, fruit flies, or other pests emerging from the soil. It’s been amazing, to say the least. Recyclable Bag – It’s always great to see a company making an effort to a greener lifestyle!

Holding some Promix Potting Soil to show the texture and what’s in Promix soil

Where to Buy Pro Mix

I purchased Pro Mix Moisture Potting Mix (with the dark pink label) at the Pottstown Walmart two or three times now. It was not in stock at the Bechtelsville Walmart, but I will check there again in the future. It is difficult to find during the off-season (late fall, winter).

You can also check your local hardware or home and garden stores, like Home Depot and Lowes, as well as Amazon.com. If you go to ProMixGardening.com, you can also search for a store near you.

Pro Mix Soil Video Review

Here’s some Pro Mix Potting Soil up close…

Pro Mix Potting Soil vs. Miracle Gro Potting Soil

In my experience comparing Pro Mix Potting Soil vs. Miracle Gro Potting Mix, I found Pro Mix to be the superior product. For years I’ve used Miracle Gro potting soil and I will continue to use it here and there. As far as indoor gardening and seed starting, though, I will rely on Pro Mix as long as it’s available.

Showing off the lovely texture of Promix Potting Soil in a nursery pot with a green spoon

Here’s the breakdown of Pro Mix vs. Miracle Gro potting soils:

Cheaper – Pro Mix wins this category as the 2 cubic foot bag of compressed soil was only $12.88 at Walmart. Looking at Lowes or Home Depot, I’ve seen the same about of Miracle Gro mix for close to $20.

– Pro Mix wins this category as the 2 cubic foot bag of compressed soil was only $12.88 at Walmart. Looking at Lowes or Home Depot, I’ve seen the same about of Miracle Gro mix for close to $20. Better Quality – I enjoyed the texture, composition, and cleanliness of using Pro Mix potting mix far better than the Miracle Gro mix. As I write this, gardening season is currently over here in PA Zone 6b, but I can’t wait for seed starting to run my fingers through the mix as I plant tons of seeds all over again.

– I enjoyed the texture, composition, and cleanliness of using Pro Mix potting mix far better than the Miracle Gro mix. As I write this, gardening season is currently over here in PA Zone 6b, but I can’t wait for seed starting to run my fingers through the mix as I plant tons of seeds all over again. Value – I feel that the amount of Pro Mix provided in the compressed packaging is very fair for the cost and happily continue to be a repeat customer for this product. When Miracle Gro potting mix goes on sale, I will happily still buy it for my outdoor garden beds and containers.

– I feel that the amount of Pro Mix provided in the compressed packaging is very fair for the cost and happily continue to be a repeat customer for this product. When Miracle Gro potting mix goes on sale, I will happily still buy it for my outdoor garden beds and containers. Purity – When comparing Miracle Gro potting mix to Pro Mix potting soil, I felt the contents of both seemed to have good purity. However, I liked the look and feel of Promix better and also found less trouble with soil gnats (fungus gnats?). Promix may also be a good option if you are trying to avoid fertilizers already being included.

Sometimes I struggle with maintaining proper moisture for young seedlings. I don’t think I had as much trouble this year using the Pro Mix Moisture potting mix, but I’ll try it again for next growing season and report back.

Promix potting mix in a nursery pot

Truthfully, I do like both brands and would happily use either in seed starting, filling flower pots or containers, and amending outdoor raised beds as needed. Both companies offer quality products, and it was a nice change trying a previously unknown, new brand and product.

What’s your favorite potting mix? Have you tried the comparison of Miracle Gro potting soil vs. Pro Mix potting soil?

Shout out in the comments below so we can track everyone’s favorite brand and experiences!

Happy Gardening!

Edited 12.14.21 to add video and update spelling of Miracle Gro.

PRO-MIX HP MYCORRHIZAE

How do I use PRO-MIX HP?

To use PRO-MIX HP, open the package, remove some PRO-MIX product and place into a large tub or container. Lightly break up any clumps so that the PRO-MIX is light and airy. Most growers prefer to add a small amount of water prior to filling containers. If you add water, add enough so that the PRO-MIX product is slightly moist to touch. Do not saturate.

Fill flats, containers and/or pots, without compacting the PRO-MIX in the container. Plant your seedlings, young plants, etc., then water in containers.

What’s the difference between PRO-MIX BX and HP?

PRO-MIX BX is a general purpose growing medium, compared to PRO-MIX HP which is a High Porosity growing medium. These products are the same in pH and chemical properties. The difference is that PRO-MIX HP contains a higher percent of perlite than PRO-MIX BX. Perlite is a porous aggregate that does not absorb water.

When incorporated into growing media, perlite provides air porosity and reduces water retention. Since PRO-MIX HP contains a higher percentage of perlite than PRO-MIX BX, HP holds less water and is better suited for crops that are sensitive to over watering, to low light growing conditions or for use in winter months when daylight is shorter.

What is the pH of PRO-MIX HP?

Using the Saturated Media Extraction test method (SME), PRO-MIX HP is formulated in a pH range of 5.2-6.2. Once product is opened, crops planted and watered, limestone is activated and pH will reach 5.8-6.2 within 7-10 days.

Can you reuse PRO-MIX HP?

We do not recommend to re-use PRO-MIX HP or any growing medium. There are many good reasons to not recycle, among these include changes to chemical and physical properties over time when in use, diminished effect of wetting agent after use and/or transmission of root diseases to newly planted crops.

When to water PRO-MIX HP?

When irrigating, add water to PRO-MIX HP until it is saturated from top to bottom of the container. You will know you have accomplished this when water runs out of the drainage holes at the bottom of the container. Over time, allow the growing medium to dry-out without applying additional water.

You will know when to apply water again when the surface of the growing medium turns color from a dark brown/black (wet) to a light brown/tan color (dry enough to rewater).

Does PRO-MIX HP have nutrients?

Yes, PRO-MIX contains a starter fertilizer to help plants acclimate to a new rooting environment. We strongly recommended to initiate a fertilizer program within 7-10 days after planting. The fertilizer program you select should take into consideration water quality, crop type and the stage of plant growth.

Is PRO-MIX HP good for seedlings?

PRO-MIX HP can be used for transplanting seedlings. However, we suggest PRO-MIX FPX BIO-FUNGICIDE for seed starting and seed germination.

Is PRO-MIX HP soilless?

PRO-MIX HP is a peat-based growing medium formualted with a high percentage of perlite. PRO-MIX HP and all PRO-MIX growing media products are ‘soilless’, meaning that they do not contain any mineral soil.

Can You Use Potting Mix in the Ground?

It’s that time of year when bagged soils are stacked high and we’re inundated with choices of what to fill our gardens with. Potting mix is ubiquitous and available year-round, and is ideal for container gardening, but can it also be used in the ground outside?

Can You Use Potting Mix in the Ground?

You can use potting mix outside in the ground, but considering how expensive potting mix is and how much you need to fill up a garden bed, there are usually more cost-effective options for home gardeners.

Potting mix is essentially some combination of peat moss (or sometimes coco coir), compost or rotted wood, and perlite or vermiculite. Sometimes lime or slow-release granular fertilizer is included as well. All of these potting mix ingredients are perfectly suitable for use in the garden. Peat moss holds moisture, perlite/vermiculite help loosen up the soil structure, and compost/fertilizer add nutrients (compost also improves soil structure).

However, to fill up a typical garden bed, you will need a lot of potting mix, which adds up fast. Unless you can get an extremely cheap potting mix, save it for the container garden or small raised beds.

Can I Use Potting Mix in a Raised Bed?

For small raised beds, you can use potting mix, but this will get prohibitively more expensive the larger the raised bed. For tall raised beds, such as Birdies galvanized steel beds, it’s better to fill up the bottom with cheaper materials and top it off with potting mix or compost.

What Should I Use to Fill My Garden?

There is no right or wrong way to fill your garden, but for most gardeners, using compost or a mix of compost and garden soil or topsoil is most economical. For deep raised beds, consider a hugelkultur approach by filling the bottom with branches, logs, and other organic matter, then fill the top few feet with compost or soil.

Garden Soil and Topsoil

These are the two basic, cheapest options to fill garden beds. They tend to be lower quality unless mixed with nutrient rich compost.

Topsoil is, as the name suggests, soil that is scooped up from the surface. This is often collected from construction sites as they remove soil to level the ground for building. While topsoil is not bad for your garden, there is no quality control so you may end up with lots of rocks, unrotted sticks, and sometimes plastic. If you don’t mind the rocks (not good for carrots and other long root vegetables), topsoil can be used to fill the base of your garden beds, then you can add higher quality soil or compost in the top layers. Topsoil can also be a cheap and effective way to fill in gaps around your yard.

Garden soil is similar to topsoil, but is amended with compost and usually has larger rocks and debris removed.

Compost

In a perfect world, you would fill your entire garden with compost. It’s rich in nutrients and has excellent structure and water retention properties.

Filling beds with pure compost can be expensive, but you can mix it with topsoil, garden soil, potting mix, or even your native soil.

Some gardeners also opt to fill up most of their garden beds with cheap soil then add a thick layer of compost on top. Alternatively, you can look for compost mixes, such as triple mix which is made with compost, peat moss or sandy soil, and topsoil/loam.

Filling Raised Beds with Hugelkultur

Hugelkultur is an old horticultural technique involving burying wood and other organic material in mounds of soil, then planting on top of it.

The idea behind hugelkultur is to allow organic material to make up the bulk of the mound (or in this case, your raised beds) which will decay slowly over time. After they decompose, they turn into a rich, spongy material with superior water retention.

Most vegetable roots only grow down a few feet, meaning for a 3-foot raised bed, you could fill up the first foot with branches and logs, then fill up the rest with soil and compost without causing any issues. This can save you a lot of money when filling up new raised beds.

Conclusion

While you can use potting mix in the ground, it’s not the most economical option. Cheaper options include compost, a mix of garden soil and topsoil with compost, and other compost mixes like triple mix. Alternatively, if you have deep raised beds, you can fill the lower layers with cheaper soil or even woody material like branches (hugelkultur) and use compost, compost mixes, or potting soil for the top layers.

Related Questions About Potting Mix

Is There a Difference Between Potting Soil and Potting Mix?

There is no difference between potting soil and potting mix, and both terms are used interchangeably.

What Is the Difference Between Indoor Potting Soil and Outdoor Potting Soil?

Strictly speaking, there is no difference between indoor and outdoor potting soil, however, some indoor potting mixes might be sterile mixes, meaning there is no risk of bringing pests into your home. Potting soil explicitly marketed for outdoor gardening may include more organic matter or soil that could have insect eggs.

What Can I Use Instead of Potting Soil in Containers?

There are several alternatives for potting soil in containers, such as homemade mixes with peat moss/coir, vermiculite/perlite, and compost. You can also mix some of your native soil, garden soil, or topsoil with peat moss/coir, compost, or vermiculite/perlite. Pure compost also works well in containers.

Why Can’t You Use Garden Soil in Pots?

Garden soil can be used if mixed with peat moss/coir, compost, or vermiculite/perlite. The reason why pure garden soil (or topsoil or your own native soil) is not recommended is because they tend to hold onto water too well, which leads to poor drainage in pots. Ideal growing media for pots is rich and well-draining.

Can You Use Potting Mix to Start Seeds?

You can use potting mix to start seeds, and for many gardeners, it’s what they prefer. Ideally use sterile potting mix, since there is less risk of mold or fungus gnat larvae killing your seedlings. Potting mix works well because it holds onto water, but still well-draining, and most potting mixes have some added fertilizer which is more than enough to support seedling growth until transplanting.

Do I Need to Add Fertilizer to Potting Mix?

If using new potting mix, adding fertilizer is almost always unnecessary since most will have slow-release, granular fertilizer already included. However, the fertilizer in potting mix is only enough to support growth for a limited time. If growing small plants, indoor plants, or slow-growing houseplants, you may need to amend your potting mix with fertilizer after a few months. If growing larger plants outdoors, you may need to add fertilizer after a month or so.

Should You Use New Potting Mix Every Year?

There is an informal rule that people should use new potting mix every year, but this is not always necessary. The idea stems from the fact that houseplants will gradually deplete all the nutrients, and the potting mix will settle and compact. If you are adding fertilizer and your plants haven’t outgrown their pot, it’s not necessary to change the potting mix. However, transplanting or repotting, it’s a good idea to use new potting mix. However, don’t throw it away; you can reuse old potting mix by refreshing it with more nutrients, some added peat moss and vermiculite, or even compost. Or you can cut new potting mix with some old potting mix and add extra fertilizer.

Can I Put Old Potting Soil in My Garden?

One use of old potting mix is to toss it into your garden. You can absolutely do this, either by top dressing garden beds with old potting mix or tilling it into the top few inches of soil.

Pro-Mix Soil: The Best Potting Soil for Organic Gardeners

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Over the past 5 years I’ve tested all sorts of potting soil in my organic garden, from generic brands to in-house nursery blends and even my own DIY mixes. After trying all the options out in my home garden, the ProMix line of potting soils has come out on top as the best potting soil for me. Here’s why ProMix soil worked better for me than the other types of soilless potting mix.

ProMix Soil: High-Quality Potting Soil For Organic Gardeners

ProMix is a high-quality plant-growing medium. The ProMix soil line is known for offering a variety of potting mix options, some of which are listed as safe for organic growing. My favorite potting mixes are the Organic Vegetable & Herb Potting Mix and the plain ProMix HP peat moss+perlite bales. The seed starting mix consistently performs well too.

Here are links to the manufacturer’s website with all the details for each of these potting mixes:

The Vegetable & Herb Mix is perfect for my indoor and outdoor container gardens, as it includes plant food that is safe for organic gardening. The ProMix HP adds air and bulk to my large planters and raised beds, and also works well for microgreens indoors. And the seed-starting mix is perfect for getting my homegrown tomatoes, nasturtiums, and organic pumpkins off to a good start indoors in the early spring.

Where to Find Pro-Mix Soil

Pro-Mix Vegetable and Herb Mix is available on Amazon in the US at the links in the section above. Amazon also carries ProMix HP and ProMix BX (the large bale types of promix soil). Here in Canada, I buy Pro-Mix from Home Depot, Home Hardware, or one of our many wonderful independent garden centers. Check out the Pro-Mix store locator to find a retailer near you.

The ProMix line clearly lists ingredients for all ProMix soil on product packaging and on their website. A detailed ingredient list helps prevent accidentally contaminating your organic garden with synthesized chemical fertilizer…which is actually quite a common organic gardening mistake.

What Makes Great Organic Potting Soil?

For any gardening supplies, I always look for potting soil that is safe for organic gardening, with high-quality ingredients and no manufactured chemicals or contaminants. The OMRI-Listed logo is a good thing to look for when shopping. You can also look up any product on the OMRI website to see if it is listed as approved for organic use. Approved products are issued a certificate. Generic products can also be looked up (not just brand name products).

In addition to checking for organic certification, it’s important to check the ingredients. There can be a very wide range of ingredients in potting soils. Some consist almost entirely of filler ingredients (like composted lumber byproducts or manure), while others are more carefully formulated and tested to support healthy organic plant growth. The best organic potting soil has to have the best ingredients. Good ingredients lead to healthy plant growth and low potential for contamination and disease.

Most high-quality premium potting soils have similar ingredients. The best potting soil usually consists of peat moss or coconut coir for bulk volume, perlite or vermiculite for porosity (voids for air and water), and some sort of organic plant food. These mixes are often referred to as soilless potting mix as they don’t contain any soil mineral particles. Many DIY potting soils, like my own potting soil recipes or Mel’s Mix from Square-Foot Gardening, are also based on this general mix (often with homemade compost as the plant food).

The OMRI-Listed status of many ProMix products indicates the mix is approved for organic use. This is how I originally came across Pro-Mix Premium Organic Vegetable and Herb Mix. I was looking for an organic potting mix option for my container gardens and saw the OMRI organic logo.

Disclosure: Since originally testing various potting mixes, I’ve received free potting soil from Pro-Mix to test in my garden. I wouldn’t use it in my own organic garden if I didn’t trust it wholeheartedly.

ProMix Organic Potting Soil

So if most high-quality organic potting soils have similar ingredients, why is ProMix better? The biggest difference I’ve found between ProMix soil and other high-quality soilless potting mix available in my area is that the line includes an additional ingredient: mycorrhizal fungi.

Mycorrhizal fungi benefit your plants by forming a symbiotic association with plant roots. In a mycorrhizal system, the fungus colonizes the root tissue and stimulates increased water and nutrient uptake. This leads to increased plant growth. It’s a totally organic way to grow healthier, more productive plants.

Pro-Mix Premium Organic Vegetable and Herb Mix contains the following ingredients:

Canadian Sphagnum Peat Moss

Peat Humus

Perlite

Gypsum

Limestone

Organic Fertilizer

Mycorrhizae

The peat in the mix provides bulk volume, holding water and nutrients to make them available to your plants. The perlite lets excess water drain while allowing the plant roots to access oxygen. The gypsum provides calcium (very important for your tomatoes!) while the limestone neutralizes the pH of the peat moss. The organic fertilizer provides nutrients for your plants and the mycorrhizae colonize the roots to stimulate increased nutrient absorption.

Using ProMix Vegetable And Herb Mix In The Garden

I’ve had excellent results with ProMix Organic Vegetable and Herb Mix. The soilless potting mix works well in the larger containers in my patio herb container garden, as soil preparation in my berry walk garden, and as the top layer of soil in my new raised garden beds. I’ve used it to grow annual vegetables, herbs, and flowers, as well as perennials like blueberries and raspberries.

The mix is light and fluffy. If you pick up the bag in the store beside a bag of generic soil, it will feel lighter due to the lack of heavy filler ingredients. The lightness of the mix allows it to retain porosity in your garden, allowing roots to access air and water (without becoming waterlogged). Due to the peat content, the mix may become hydrophobic if it’s allowed to dry out completely. If this happens, soak the soil in clean water to re-hydrate it.

Organic wheatgrass grown with Pro-Mix (on the left) as compared to wheatgrass grown without it (on the right).

Using ProMix HP For Microgreens & Wheatgrass

I also use ProMix for my wheatgrass and other microgreens. I used to just sprout the seeds in water, which does work, but I’ve found using a bit of Pro-Mix HP leads to better production more consistent growth. The greens are also more likely to survive if I forget to water it!

I did a little experiment for this ProMix review with my wheatgrass trays. I found that the trays grown with ProMix (pictured above, on the left) grew faster and produced more wheatgrass than those grown without it (pictured on the right). I now grow my organic wheatgrass with ProMix throughout the winter. Here are instructions on how to grow your own wheatgrass if you’d like to give it a try.

Is ProMix Worth It?

The best potting soil can be more expensive than generic options, but in my experience, it’s been well worth it. I’d rather spend a bit more money upfront and then have a successful garden than have to re-do work or pay to replace lower quality products.

Is Pro Mix premium potting soil good for vegetables?

Is Pro Mix premium potting soil good for vegetables?

This versatile soil works great for both indoor and outdoor plantings and is suitable for growing vegetables, herbs, annuals and perennials.

Is ProMix good for vegetables?

Is ProMix good for growing vegetables?

What potting mix is best for vegetables?

What is ProMix soil used for?

Comparing Promix To Walmart’s Garden Experts Potting Soil. A Soil Scientist Explains Potting Soils

Is ProMix good for tomatoes?

Is ProMix the same as potting soil?

Is potting mix OK for vegetables?

Can I grow vegetables in potting soil?

Is it OK to use Miracle-Gro potting mix for vegetables?

Is Pro-Mix good for seedlings?

Is Pro-Mix a good soil?

Does Pro-Mix have fertilizer in it?

Which Pro-Mix is best?

Is promix HP good for seedlings?

Does Pro-Mix organic have fertilizer in it?

How do you mix potting soil for vegetables?

Classic Soil-Based Mix:

1 part peat moss or mature compost. 1 part garden loam or topsoil. 1 part clean builder’s sand or perlite.

Can you use potting soil to grow tomatoes?

Can you use potting mix in raised beds?

What type of soil should I use for a raised vegetable garden?

What is the best soil for growing tomatoes in containers?

How long is promix good for?

What is the pH of pro-mix potting soil?

Can you start seeds in PRO-MIX BX?

PRO-MIX Premium Organic Garden Mix is ideal for outdoor gardening projects, such as vegetables, herbs, flowers, seed starting, raised garden beds and containers. This high-quality peat-based garden soil is OMRI®-listed and approved for organic use. It’s your go-to option for tasty vegetables and organic growing.ProMix is a high-quality plant-growing medium. The ProMix soil line is known for offering a variety of potting mix options, some of which are listed as safe for organic growing. My favorite potting mixes are the Organic Vegetable & Herb Potting Mix and the plain ProMix HP peat moss+perlite bales.To grow a successful container vegetable garden, start with great soil—not soil from your yard, but what’s known as a potting mix. These mixes, like Miracle-Gro® Potting Soil, contain the right blend of materials like coir, peat moss and/or compost to create an ideal growing environment for roots inside a pot.Pro Mix potting soil is peat-based potting soil designed for indoor and outdoor plants as well as seed starting and other garden needs. The ingredients are carefully selected to support vigorous growth, better moisture management, improved nutrient uptake, larger root systems, and healthier plants overall.ProMix is great for tomatoes. You’ll need to fertilize the plants, but PM is one of the better planting soils.PRO-MIX Premium Moisture Potting Mix is perfect for all indoor and outdoor container planting, re-potting or seed starting. This high-quality peat-based potting soil provides the best results, thanks to mycorrhizae that build stronger roots and give healthier, bigger and more productive plants.ANSWER: Your potting soil for flowers will work fine in the vegetable garden, especially if you’re growing your veggies in containers. Of course, using potting soil made specifically for vegetable gardens would be the best possible scenario.While vegetables aren’t fussy about the kind of pot they’re in, they do need a potting mix that will allow water to drain well. Like most other container gardens, your vegetables will do best in potting mixes made for containers.Miracle-Gro is specially formulated to support plant growth and is safe for the vegetables, fruits and herbs in your garden.PRO-MIX Ultimate Seed Starting Mix is the ideal peat-based growing mix for germinating seeds. This mix is great for germinating, vegetable, flower, herb seeds as well as for starting leaf, stem or root cuttings.Pro-Mix is a good lightweight soil that works well for most plants we’ve grown through the years. Another thing to keep in mind with Pro-Mix is that when it dries out it can be tough to re-hydrate in our experience.Yes, PRO-MIX contains a starter fertilizer to help plants acclimate to a new rooting environment.From the many Pro-Mix blends available on the market, the best bag to snag for growing cannabis plants is the perlite-rich Pro-Mix HP. Because of the high perlite levels, this mix offers a stable and protected growing environment beneath the surface and provides the most drainage possible out of all Pro-Mix blends.PRO-MIX HP can be used for transplanting seedlings. However, we suggest PRO-MIX FPX BIO-FUNGICIDE for seed starting and seed germination.There is peat moss (75%) peat humus, compost, perlite, gypsum, limestone and organic fertilizer.If you’re growing tomatoes in containers, though, potting soil is the way to go. It is lighter than garden soil so it drains well, and it’s devoid of weeds and diseases. Potting soil ingredients list usually consists of a mixture of peat, perlite and compost, advises Exploratorium.Soil taken from your yard or a garden bed is too dense to use in a pot or raised bed. Instead, for containers, you’ll want to use potting mix (also called potting soil), a lightweight and fluffy alternative. For raised beds, you’ll want to use a slightly heavier soil made specifically for that type of garden.For most situations, we recommend these proportions: 60% topsoil. 30% compost. 10% Potting soil (a soilless growing mix that contains peat moss, perlite and/or vermiculite)The best soil for tomatoes in container is a loose soil like sandy loam – aerated, well-drained but moisture-retaining, packed full of organic matter, nutrients, a higher level of phosphorus & potassium, and a slightly acidic pH level between 6 to 6.8.Once in use, it generally lasts about one to two weeks, depending on the rate the manufacturer incorporates, how much water is applied to plants (volume divided by frequency) and plant uptake. If you are unsure of the fertilizer content, check with the growing media manufacturer for fertility levels.Typically the pH of an unused PRO-MIX product that is 4-9 months old is 5.2-5.8 (S.M.E. method), depending on the product and the moisture content. A growing medium should be used within nine to twelve months of its manufacturing date to ensure that the pH of the unused growing medium is not too high.I purchased a bale of ProMix Bx thinking it is the same as the standard ProMix I have been using all along to start seeds.

Pro Mix Potting Soil Review (vs. Miracle-Gro)

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This year, I decided to try Pro Mix Potting Soil for my 2021 garden. Back in 2020, I got serious about gardening. The pandemic inspired many new gardeners to try a quarantine garden, and while I wasn’t new to gardening, I definitely dove back in head first. But after planting SO many seeds indoors, I noticed tons of gnats. So, I decided I needed a change from Miracle Gro.

I asked about favorite potting soil brands in one of my Facebook gardening groups and discovered a lot of gardeners actually don’t strictly use Miracle Gro potting soil! Some mentioned Black Gold soil and others mentioned FoxFarm.

Some serious gardeners talked about how they make their own DIY potting mixes every year. It sounds like it works out cheaper and involves a true labor of love!

Numerous recommendations poured in for Pro Mix Potting Soil, so I decided to give it a whirl.

ProMix Potting Soil Review vs. Miracle Grow Brand – Big bag of compressed Promix soil on our stone walkway

What is Pro Mix potting soil?

Pro Mix potting soil is peat-based potting soil designed for indoor and outdoor plants as well as seed starting and other garden needs. The ingredients are carefully selected to support vigorous growth, better moisture management, improved nutrient uptake, larger root systems, and healthier plants overall.

What is in Pro Mix potting soil?

The Pro Mix moisture mix contains Sphagnum peat moss (80-90%), natural coco coir fiber, perlite, ground limestone (for pH), mycorrhizae, and an undisclosed wetting agent. The organic garden mix contains a bit less peat but also includes Gypsum. Meanwhile, the Pro Mix All-Purpose Mix includes Canadian sphagnum peat moss, peat humus, perlite, limestone, and mycorrhizae (PTB297 technology).

Promix potting soil is a peat based potting mix.

Benefits of Pro Mix Soil

I loved Pro Mix soil from the first time I tried it this year (2021). It is now my go-to potting mix for the foreseeable future.

Here are the best benefits of Pro Mix Potting Soil:

Clean – From the first time using it, Pro Mix Potting Soil just felt cleaner and higher quality than any other potting mix I’ve used to date. The mix just didn’t feel as dirty as traditional potting soil.

From the first time using it, Pro Mix Potting Soil just felt cleaner and higher quality than any other potting mix I’ve used to date. The mix just didn’t feel as dirty as traditional potting soil. Affordable – The bag of Pro Mix ended up costing me about 40% less than the equivalent amount of Miracle Gro Potting Mix. The 2cu ft value pack saves money and includes a LOT of potting mix!

The bag of Pro Mix ended up costing me about 40% less than the equivalent amount of Miracle Gro Potting Mix. The 2cu ft value pack saves money and includes a LOT of potting mix! Compressed – Two cubic feet of potting mix fit into that bag of Pro Mix! It’s packed in tight to take up less space. The compressed potting soil limits packaging, resulting in 2x less bags per package.

Two cubic feet of potting mix fit into that bag of Pro Mix! It’s packed in tight to take up less space. The compressed potting soil limits packaging, resulting in 2x less bags per package. Convenient Package – The convenient packaging has a sturdy handle and a boxy shape that fits well in storage when not in use. The Pro Mix bag also holds its form after opening, keeping your garage and other spaces neat.

The convenient packaging has a sturdy handle and a boxy shape that fits well in storage when not in use. The Pro Mix bag also holds its form after opening, keeping your garage and other spaces neat. No Gnats – To my pure delight, I didn’t notice any fungus gnats, fruit flies, or other pests emerging from the soil. It’s been amazing, to say the least.

To my pure delight, I didn’t notice any fungus gnats, fruit flies, or other pests emerging from the soil. It’s been amazing, to say the least. Recyclable Bag – It’s always great to see a company making an effort to a greener lifestyle!

Holding some Promix Potting Soil to show the texture and what’s in Promix soil

Where to Buy Pro Mix

I purchased Pro Mix Moisture Potting Mix (with the dark pink label) at the Pottstown Walmart two or three times now. It was not in stock at the Bechtelsville Walmart, but I will check there again in the future. It is difficult to find during the off-season (late fall, winter).

You can also check your local hardware or home and garden stores, like Home Depot and Lowes, as well as Amazon.com. If you go to ProMixGardening.com, you can also search for a store near you.

Pro Mix Soil Video Review

Here’s some Pro Mix Potting Soil up close…

Pro Mix Potting Soil vs. Miracle Gro Potting Soil

In my experience comparing Pro Mix Potting Soil vs. Miracle Gro Potting Mix, I found Pro Mix to be the superior product. For years I’ve used Miracle Gro potting soil and I will continue to use it here and there. As far as indoor gardening and seed starting, though, I will rely on Pro Mix as long as it’s available.

Showing off the lovely texture of Promix Potting Soil in a nursery pot with a green spoon

Here’s the breakdown of Pro Mix vs. Miracle Gro potting soils:

Cheaper – Pro Mix wins this category as the 2 cubic foot bag of compressed soil was only $12.88 at Walmart. Looking at Lowes or Home Depot, I’ve seen the same about of Miracle Gro mix for close to $20.

– Pro Mix wins this category as the 2 cubic foot bag of compressed soil was only $12.88 at Walmart. Looking at Lowes or Home Depot, I’ve seen the same about of Miracle Gro mix for close to $20. Better Quality – I enjoyed the texture, composition, and cleanliness of using Pro Mix potting mix far better than the Miracle Gro mix. As I write this, gardening season is currently over here in PA Zone 6b, but I can’t wait for seed starting to run my fingers through the mix as I plant tons of seeds all over again.

– I enjoyed the texture, composition, and cleanliness of using Pro Mix potting mix far better than the Miracle Gro mix. As I write this, gardening season is currently over here in PA Zone 6b, but I can’t wait for seed starting to run my fingers through the mix as I plant tons of seeds all over again. Value – I feel that the amount of Pro Mix provided in the compressed packaging is very fair for the cost and happily continue to be a repeat customer for this product. When Miracle Gro potting mix goes on sale, I will happily still buy it for my outdoor garden beds and containers.

– I feel that the amount of Pro Mix provided in the compressed packaging is very fair for the cost and happily continue to be a repeat customer for this product. When Miracle Gro potting mix goes on sale, I will happily still buy it for my outdoor garden beds and containers. Purity – When comparing Miracle Gro potting mix to Pro Mix potting soil, I felt the contents of both seemed to have good purity. However, I liked the look and feel of Promix better and also found less trouble with soil gnats (fungus gnats?). Promix may also be a good option if you are trying to avoid fertilizers already being included.

Sometimes I struggle with maintaining proper moisture for young seedlings. I don’t think I had as much trouble this year using the Pro Mix Moisture potting mix, but I’ll try it again for next growing season and report back.

Promix potting mix in a nursery pot

Truthfully, I do like both brands and would happily use either in seed starting, filling flower pots or containers, and amending outdoor raised beds as needed. Both companies offer quality products, and it was a nice change trying a previously unknown, new brand and product.

What’s your favorite potting mix? Have you tried the comparison of Miracle Gro potting soil vs. Pro Mix potting soil?

Shout out in the comments below so we can track everyone’s favorite brand and experiences!

Happy Gardening!

Edited 12.14.21 to add video and update spelling of Miracle Gro.

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