it will work, but there are better sources out there (most growers badmouth Miracle-Gro products, although I used it successfully for 30 years, just use it diluted, it can 'burn' plants easily, if overdone) ... dilute it to 1/2 strength ... stop all feeding two weeks before harvest, and water with plain H2O ... (P.S., I finally switched to organic ferts, I use the full set of Earth Juice nutes, obtainable at most any nursery) ... :smokin: