Premier Pro-Mix HP Mycorrhizae 3.8 cu ft

Premier Pro-Mix HP Mycorrhizae 3.8 cu ft

Bootstrap Farmer

Regular price $1,899.99

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ProMix Soil Medium for Microgreens and Plant Starts!

This product is only available by pallet (30 - 3.8 cu ft. bags). Pro-Mix® HP Mycorrhizae™ is the microgreens top choice for soil growing media. It has exceptional drainage because of its high-porosity, peat-based formula. It is great for root cuttings and propagation as well as seed starting and ornamentals. This highly versatile medium contains Canadian sphagnum peat moss (65-75% per volume), horticulture grade perlite, dolomitic and calcitic limestone (for PH adjustment), wetting agents, and mycorrhizae- endomycorrhizal fungi (glomus intraradices). This PH-neutral mix provides plants with everything they need for optimal results. Available by pallets of 30 3.8 cu ft bags.

The 3.8 cu. ft. size is compressed and expands to approximately 7 cu. ft.

Key Features of Promix Soil Mix

  • Contains 100% natural Mycorrhizae 
  • Peat-based growing medium with perlite and vermiculite.
  • Ideal for the production of vegetable transplants and microgreens
  • High water holding qualities
  • pH adjusted

*This item can not be returned.

Click here for information on freight delivery.


SEEDTIME FULFILLED SHIPPING (items fulfilled by Seedtime)
  • We ship to the USA only.
  • We offer free shipping on all products fulfilled by Seedtime with an order value over $49
  • Orders placed before 12pm Eastern Time ship the same day. Orders after 12pm Eastern Time will ship the next business day. Timing applies to orders in the lower 48 States.
  • Standard delivery time is 3-7 business days.
  • Easy 30 day returns or exchanges.

Your satisfaction means the world to us which is why all of your orders are backed with our 30 Day Satisfaction Guarantee. Either you love it, or you can return it for an equal exchange or get a full refund. Just send us a support ticket to and we'll be glad to help you with your return.

Other Vendor Fulfilled Shipping

We offer products that are fulfilled by other vendors with the following rates:

The Farm On Central: $9 flat rate

Farmers Friend: Free shipping to contiguous USA

Peaceful Valley: $5 for up to 5 seed packets and then free shipping on seed packets after that. $10.99 flat rate for bulk seeds/larger weight items.


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Premier Pro-Mix HP Mycorrhizae 3.8 cu ft

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