Bougainvillea Wont Flower. To force bougainvillea into bloom nurseries often withhold water for a few months. Are actually modified leaves called bracts that are long-lasting and bright.
Then the grower waters heavily the plant. Then they water the plant heavily. Bougainvillea are very drought-tolerant and thrive on neglect.
Bougainvilleas require 6 hours of direct sun and flower to their best when day length is less then 12 hours.
The colorful bracts outshine the plants true but tiny flower much like a poinsettia. These plants flower throughout the year in the United States. Mar 08 2019 Bougainvillea is a tropical vining shrub that comes in a wide array of bright and fanciful colors. Instead it alternates its energy expenditure between growing or flowering in cycles of 3-5 weeks.