Check the listing for details. PREMIER HORTICULTURE PRO-MIX HP Biofungicide+Mycorrhizae High Porosity Mix,2.8CF. Condition: New. Listed at 48.30 USD. If you are looking for a premium soil mix to support the growth of your plants, look no further than PRO-MIX HP Biofungicide + Mycorrhizae High Porosity Grower Mix! 75% Canadian sphagnum peat moss. 25% perlite. Mycorrhizae - glomus intraradices, for enhanced nutrient and water uptake, stress resistance and overall root and plant health. Biofungicide - bacillus subtilis, colonizes developing roots to help suppress disease causing organisms. Made in USA PRO-MIX has designed this high porosity peat-based growing medium with perlite to ensure optimum growth, especially with plants where high air capacity and extra drainage are required. This is an ideal formulation for growers in need of having a media adapted to watering flexibility and crop seasonality. With mycorrhizae added to enhance nutrient and water uptake. This will also provide stress resistance and overall root and plant health. Also with biofungicide for colonizing developing roots to help suppress disease causing organisms. So give your plants the correct soil they need to thrive today with PRO-MIX!