well i have known people to use superthrive for germing, cloning or early growth other than that im not quite sure if its beneficial towards flowering...if your looking for 100% organics try bio-bizz grow & bloom great stuff got great results! i've found that alot of MJ can handle this particualr brand in mass amounts...i've gone way over the recomended dosage an not seen one spec of burn!...but if you dont like the sounds of it keep searching buddy you'l find somthing an yes superthrive is organic...