Bougainvillea is a tropical, shrub-like vine that bursts forth with colorful flowers for 11 months of the year if it’s planted in the right climate. To grow bougainvillea, plant it in full sun, slightly acidic and well-drained soil, and a relatively hot and dry climate.Click to see full answer. Accordingly, how quickly does Bougainvillea grow?Bougainvillea (Bougainvillea spp.) are fast growers, a botanical term that for vines means they can grow more than 36 inches year. Bougainvilleas will only achieve this rapid growing rate under their optimal preferences for weather and growing conditions.Beside above, why is my bougainvillea not flowering? Dry and Drier Bougainvilleas bloom best under arid conditions. Too much water translates to few or no blooms. Bougainvillea growers often withhold water for extended periods to force the plant into bloom. To stimulate blooming this way, withhold all water until the leaves begin to wilt. Also to know, does bougainvillea need a trellis? Bougainvillea thrives in the heat and is restricted to outdoor growing only in U.S. Department of Agriculture Plant Hardiness Zones 10 and 11. It takes well to training on a trellis while it is young. Bougainvillea has huge thorns, so wear heavy gloves when working with it.What is the best fertilizer for bougainvillea?Use complete, balanced fertilizers with a nitrogen, phosphorus and potassium (N-P-K) ratio such as 5-5-5 or 10-10-10 to promote good bougainvillea health and plentiful flowers. Too much nitrogen promotes vegetative growth at the expense of blooms, so slow-release fertilizers that moderate nitrogen release are best.