Flowering Fert

This is my first year growing. My plants are outdoors and are looking good so far. My question is which type/brand of fertilizer will be best for the flowering stage. I hear FoxFarms is pretty good but I want something I can go buy at the store and FoxFarms is not sold around here. Any suggestions?

i think its called jack ors peters fertilizer. They have an all purpose 20-20-20 and also flowering formulas http://www.jacksclassic.com/blossom_booster.html

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