PRO-MIX BX Mycorrhizae Soilless Potting MixPRO MIX BX MYCORRHIZAE is a general purpose peat based professional growing media designed for a wide range of greenhouse and transplanting applications that contains a mycorrhizal inoculum (Glomus intraradices). These microscopic fungi attach to and colonize the root systems working in symbiosis with plants. It benefits the plant by increasing water and nutrients acquisition (especially Phosphorus, Copper and Zinc). This symbiotic relationship