Bougainvillea blooms all summer for me in California... but they need heat and sun...let it dry out between waterings a little... then let it dry out a LOT during the winter.

Hmm that's a tough question to answer. Heathen so your blooming period in california is the complete opposite of Florida? That would make sense because our dry season is november through may and that's when bougainvillea's bloom the most here.

Kameha is right. In Florida, Bougainvillea goes nuts the drier it is. (Once established, of course). Also, generally the more you prune them, the less they bloom since flowering occurs from the tips. They can get massive. They are easy propagate from cuttings, too.

Mine are just starting to come into bloom,and always do about this time and thru the rest of the summer.
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Here in México I BELIEVE it always has flowers, do this make any sense? In here there´s only 20" of annual rainfall and hot weather year round.

Patusho that does make sense because it is arid almost year round where you live right? And like WRF said bougainvillea's bloom during dry periods. Here we get a few blooms during the wet period and I bet in California they bloom a bit during the winter rainy season too.

Actually it is semi-arid.

Mine did good in Phx, bloomed much more than they do here. Last year it was really dry in the summer where I live in Louisiana and of course they started blooming like crazy in the fall after I started to water them alot.

These bloom on new growth so for small potted ones in temperate areas, figure about 6 - 8 weeks after the last bloom, assuming that you get a new growth cycle going on it. You could prune right now to get it bushier and trigger a growth cycle. But as others noted, make sure you keep it fairly dry, even to wilting stage, before watering again and give it lots of heat and sun!

I'd like to add, (at least where we live) it depends on the Boug..I have two, Jamacian White and Raspberry Ice..The RI is deciduous, and blooms all summer long, while the JW blooms in winter..Toni