Plant Success Mike O'Rizey, 4 oz Contains a diverse blend of mycorrhizal fungi tat once established increase the surface area of your root system 100-1000 times It increases the nutrients and water available to your plant It will result with a larger more robust plant Not for sale in CT, GA,HI, ID, IL, LA, MD, MN, NC, NE, NM, NY, OK, UT, WI