R from Jamestown Ny writes,
can i use root boost on grapes and blackberrys and if not why not
We actually do not manufacture nor test these products. In this case the manufacturer has not tested this product on edible crops so these plants are not included on the product label. The EPA requires very rigorous and costly testing before a product can be used on edible plants so many manufacturers exclude these plants from the product label. Please let us know if we can be of further assistance.
Answer last updated on: 05/20/2015