I am a retired nursery owner who specialized in Bougainvilleas. Bougainvilleas are beautiful climbing plants indigenous to tropical South America. I have search the web for Jan's book - it may be found here I recommend it highly. I like to refer to the Bougainvillea as a native of Brazil whose showy 'flowers' are actually papery bracts. Bougainvillea seems to capture the very essence of the Latin American tropics with its lush foliage and electic, sensational colors.
Bougainvilleas grow and bloom in cycles.
The bloom cycle is usually about 5-6 weeks long, then all the bracts fall off. The plant then goes into a 6-8 week period when no bracts are produced. Bougainvillea Info Page U nder Bougainvillea Culture there are several web pages dealing with growing bougainvilleas in containers. U nder the Photo Gallery are lots of images of bougainvilleas. I deal with the species, hybird groups, etc.