Xtreme Gardening RTI 4301 Mykos Drops Granular Mycorrhizae, 50-Count Superior nutrient management Balances nutrient supply Higher levels of viamins and minerals, healthier crops Superior nutrient management Balances nutrient supply Higher levels of viamins and minerals, healthier crops Increases immunity to stress, including drought, disease and pests Improves soil texture, application is once per year at planting