Perennial in 9-11; can be grown as an annual in colder zones, or brought indoors over winter.
Most varieties of bougainvillea grow 20 to 30 feet tall and wide with support. If grown as groundcover, they will be 1-1/2 to 2 feet tall and spread 8 to 10 feet wide. There are dwarf varieties which will generally grow to be 3-6 feet tall and wide.
Bougainvillea thrives in full sun. Some afternoon shade in extremely hot weather may be beneficial.
In zones 9-11, bougainvillea will bloom on and off all year. In colder zones, it will go dormant when brought in for winter and will bloom mainly in summer.