Vitamin Institute™ SUPERThrive® is a highly concentrated non-toxic vitamin solution invigorating all variety greenery for home gardeners and professionals alike. It is equally suited for hydro-seeding, hydroponics, and foliar spraying. Kelp, newly added in 2013, integrates contemporary research with the existing nutrition provided by SUPERThrive® since 1940.   Call for Pricing (928) 772-0878