Liana (Climbing Vine) Bougainvillea spectabilis [Bouganvillea] Generally seen as a vine, but is also grown as a shrub, or even trained into a small tree. Can become a nice house plant as it survives house climates. Usually evergreen, but can be deciduous, especially in drier conditions. Drought tolerant. The root system of the Bougainvillea is very fragile and doesn't form a good firm root ball. Relatively pest free, but can be affected by worms, snails and aphids.