Product Description Pro Mix HP Mycorrhizae is a high porosity peat-based growing medium containing, beneficial mycorrhizal inoculum (Glomus intraradices). This formula ensures optimum growth, especially when high air capacity and extra drainage are required. It is ideal for water sensitive crops, rooting cutting and/or low-light growing conditions. Ingredients: Canadian Sphagnum peat moss (65-75 % / volume) Perlite – horticultural grade Dolomitic and Calcitic limestone (pH adjuster) Wetting Agent Mycorrhizae – endomycorrhizal fungi (Glomus intraradices)