Don't go by the numbers..look at it and see what it's made of..if it's a bunch of chemical names, in my opinion it sucks..the numbers don't make sense to me cuz my pura vida organics bloom is like 2-6-4...is the stuff your looking at flower food, like roses or something particular? As a general rule of thumb though it's NPK nitrogen, phosphorus , and potassium ...grow will be high in N but low in P and K and bloom will be low in N but high in P and K..a lot of this shit is contradictive so really some shit you just have to try, I personally wouldn't give it to mine because 55. Seems a little high..even the bloom booster I have is 0-22-20, and I don't even use it...bat guanos bird guanos and teas made from those are the best bet for success imo