Premier Pro-Mix HP Plus 3.8 Cubic Feet



In stock


Premier Pro-Mix HP (high porosity) Biofungicide + Mycorrhizae is a high-quality growing medium ideal for water sensitive crops, rooting cuttings, and/or lower-light growing conditions. Composed mostly of sphagnum peat moss with perlite, lime, Pro-Mix HP provides a higher drainage rate to help reduce the risk of overwatering and root conditions caused by excess moisture.

Pro-Mix HP contains specialized beneficial microorganisms including a mycorrhizal inoculum (Glomus intraradices, strain GHA297) to boost nutrient uptake and disease resistance, as well as a bio-fungicide (Bacillus pumilus, strain GHA180) to further combat harmful organisms such as pythium/root-rot and Rhizoctonia.

  • Quick-draining properties and the advantages of beneficial microorganisms, Pro-Mix HP is an especially well-suited mix for indoor gardening applications
  • Works well with a wide variety of containers including smart pots, nursery pots, grow bags, and air pots.

In stock


Pro Mix HP Biofungicide + Mycorrhizae 3.8 Cubic Foot (107 Liters)

With its high perlite content, PRO-MIX HP provides a great growing environment to growers looking for a significant drainage capacity, increased air porosity and lower water retention. The added benefit of fibrous peat moss and coarse perlite makes this formulation ideal for growers who require a superior-quality product adapted to their needs for watering flexibility and crop seasonality.



  • Dries out faster than general purpose, peat-based medium
  • Excellent for low-light and/or high-humidity growing conditions
  • Reduces overwatering risk
  • Reduces incidence of water-related issues (root disease, algae, fungus gnats, etc.)
  • Improved leaching of nutrient salts during flush phase
Weight 90 lbs


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.