Bougainvillea, in all the vivid colors of the tropics, is very easy to encourage blooming. The keys to promoting flowering in bougainvillea are:
2. Fertilize lightly
3. Less water.
Remember this: bougainvillea blooms on new growth. Prune back your plant and lightly fertilize. This will promote new growth and flowering. On November 1, I pruned the bougainvillea next to my house. The next day I applied some 8-3-9 granular fertilizer and watered lightly.
My bougainvillea on November 1, prior to pruning.
|Bougainvillea on November 19, coming into bloom|