go to your local garden center...

check out the fert aisle... u will see stuff like bloom food and for flowering plants

there are a few real good (and cheep) organic ferts that r made from things like seaweed that r high in phosphorous.

get to know the people who work at the garden center... they can really help out sometime... just don't tell them what u r growing

usually just reading the labels will point u in the right direction

peace,
smokin'