SUPERthrive is not a fertilizer but can be added to liquid fertilizers to improve root uptake of the nutrients.

Why is Superthrive banned?

Under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA), products containing NAA require registration with the Environmental Protection Agency (EPA) as pesticides. The sale of Superthrive is prohibited in Wisconsin and South Dakota as an unregistered pesticide. Failed to get answers.

What exactly is Superthrive?

SUPERThrive is a nontoxic vitamin solution designed to promote plant growth. While this may sound like a fertilizer, the solution is actually intended as a supplement for plants instead of a fertilizer replacement.