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Description
pro mix premium moisture potting mix Pro Mix SoilPRO MIX HP MYCORRHIZAE is a peat based, high porosity growing medium specially formulated by Premier Tech to deliver superior air capacity and extra drainage. Designed to optimize growth especially when high air capacity is needed, this formula is ideal for water sensitive crops rooting cutting and plants grown under light growing conditions. This is for pick up only at the Grass Valley store. Key Features Provides high air capacity and capacity and
PRO-MIX HP MYCORRHIZAE™ is a peat based, high-porosity growing medium specially formulated by Premier Tech to deliver superior air capacity and extra drainage. Designed to optimize growth especially when high air capacity is needed, this formula is ideal for water sensitive crops rooting cutting and plants grown under light growing conditions.
This is for pick up only at the Grass Valley store.
Key Features
- Provides high air capacity and capacity and extra drainage for healthy root system development
- Contains beneficial mycorrhizae 3.8 cu ft inoculum (Glomus intraradices) that enhances nutrient uptake and improves water uptake
- Made from premium sphagnum peat moss (65-75%) blended with horticultural-grade perlite and dolomitic & calcitic limestone for balanced pH
- Includes a wetting agent for consistent moisture and effective water retention
- Suitable for water sensitive crops rooting, propagation, and general horticultural use
Benefits of Pro-Mix HP Mycorrhizae
- Boosts increased nutrients absorption by expanding the root zone via symbiotic fungi
- Prevents waterlogging while maintaining proper moisture balance—critical for water sensitive crops rooting cutting
- Promotes vigorous plant growth and stronger, healthier plants in both greenhouse and outdoor environments
- Ideal alternative to standard pro mix soil and pro mix bx blends
Ingredients (Active Ingredients)
- Canadian sphagnum peat moss (65-75%)
- Perlite (horticultural grade)
- Dolomitic and calcitic limestone (pH adjuster)
- Beneficial mycorrhizae (Glomus intraradices)
- Wetting agent
Usage and Availability
- Perfect for container gardening, propagation, and growing sensitive crops rooting cutting
- Available in convenient 3.8 cu ft bags
- This is for pick up only at the Grass Valley store or call us for a custom shipping quote.
Enhance your garden or farm with Pro-Mix HP Mycorrhizae 3.8 cu ft, a premium peat based growing medium that supports exceptional growth especially when high aeration and drainage are essential. Explore our full range of growing mediums to find the perfect fit for your needs.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 4
Simple Magnesium Powder That Is Easy Enough to Take
I just started taking this Magnesium Citrate powder, so it is too early to know if it will help with things like muscle support, heart health, bone health. Magnesium is an important mineral for the body and it plays a role in muscle function, nerve signaling, and overall balance, so I like the idea of adding it to my routine.
The citrus berry flavor is not too horrible, which is a pleasant surprise because some magnesium powders can taste pretty rough. This one is easy enough to drink without feeling like you have to force it down. I also like that it is third party certified and comes with a full sixty servings.
I will need more time to see if it makes a noticeable difference, but so far the experience has been simple and the taste is manageable.
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Reviewed in the United States on May 14, 2026
★★★★★ 5
2 months supply, tasty berry bubblegum flavor, no morning cramps.
I've been taking Magnesium supplements for a long time, usually in capsule form. Starting from about age 45 I kept getting these awful morning calf cramps. Especially stretching, or on cold morning. The sudden agony was unexpected and concerning. Magnesium is the answer and this water-soluble magnesium from Thorne is no exception.
For this particular problem, calf cramps. The results are noticable within a couple of days. If I stop taking magnesium for 3-5 days the cramps come back.
Thorne powder has a berry flavor that is very similar to bubble gum. It dissolves easily without leaving any lumps. Is great to help you take your other supplements. I've been taking this for about 3 weeks with no cramps. Price is a little higher than capsules typically are. This works for me and the tub should last two-months if you follow the directions.
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Reviewed in the United States on May 25, 2026
★★★★★ 5
Easy Way to Add Magnesium Support
Magnesium is one of those supplements many people find helpful as part of their wellness routine. The powder format makes it easy to adjust serving sizes and mix into drinks.
One thing I liked was the citrus berry flavor, which made it more pleasant than many unflavored supplements. Overall, a convenient magnesium option from a well-known brand
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Reviewed in the United States on June 3, 2026
★★★★★ 5
Great Taste and Mixes in Water Well
I’ve been using this magnesium citrate powder for a little while now, and overall it’s been a positive experience. One of the standout aspects is how well it mixes. It dissolves easily in water with minimal residue, which makes it much more convenient compared to some other powdered supplements I’ve tried. The citrus berry flavor is also quite good: light, slightly sweet, and easy to drink without being overpowering. The powder format makes it simple to adjust how you take it (more or less water, etc.), and I didn’t notice any strong aftertaste. From a general usability standpoint, this checks the boxes I look for in a supplement: good taste, easy mixing, and consistent quality. Thorne also has a strong reputation, and this product feels in line with that in terms of formulation and overall experience. As with any supplement, individual experiences can vary, but from a taste, mixability, and convenience perspective, this has worked well for me. Overall, this is a solid option if you’re looking for a magnesium citrate powder that’s easy to take on a regular basis.
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Reviewed in the United States on April 30, 2026
★★★★★ 5
Great Magnesium Blend That Actually Works
Size: 100 Count (Pack of 1), Size: 100 Count (Pack of 1)
I’ve been taking Life Extension Magnesium Caps (500 mg) for a few weeks now, and I can really feel the difference. It’s a blend of magnesium oxide, citrate, and succinate, and I’ve noticed improved sleep quality and fewer muscle cramps at night. The capsules are easy to swallow and don’t upset my stomach, which has been an issue with other magnesium supplements I’ve tried. Plus, I like that they’re vegetarian-friendly and come in a 100-count bottle, which lasts a good while.
What I appreciate most is how balanced this formula feels. I take it mainly for sleep, muscle support, and overall well-being, and I genuinely notice I feel more relaxed, especially in the evenings. For the price and quality, it’s a great value. I’ll definitely keep this one in my daily routine.
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Reviewed in the United States on June 18, 2025