Drier Climates The recommended USDA zones are 9B through 11. Under the right circumstances, mold can invade stucco. You can also recut the stumps and paint on another application of the herbicide when new growth occurs. This can get behind a wall and, in some cases, become trapped, where it slowly begins to rot the wood and damage the structure of the home. This may attract bugs and encourage fungus, or mold, to grow. At this early stage, you can treat your bougainvilleaâbefore caterpillar larvae hatch, grow and feed on your plants. Wind and freeze damage can be cut away, allowing new growth to emerge. They are native to the coast of Brazil and are frost-tender. Sunlight. An unsightly and dangerous issue, the moisture intrusion that results from failed stucco can lead to extensive damage and rot. Warm Temperatures. A heavy infestation may even result in tender shoots being eaten and even complete defoliation of the affected bougainvillea vine. 1 or 2 nights of a light frost wonât harm them but anything more that could. How quickly does bougainvillea grow? Bougainvillea. While the damage may look terrible, bougainvillea caterpillar damage will not kill a mature, healthy bougainvillea vine. They can become broken in high winds. Just caulking or patching over these failures WONâT WORK! A flowering tropical vine, bougainvillea (Bougainvillea spp.) Patching over these problems actually makes the problem worse. If the vines made it on the roof, they would catch debris and possibly start rot. Donât Paint Your Stucco! loves the heat and will happily grow against a hot stucco wall. Moisture from the soil ca also enter the stucco from the lower part of the walls. Not enough sun = not enough bloom. It will hold water in place which instead of running off of the roof, the water has more time to work into spots that would normally not be a problem. Freeze damage on my neighbor's bougainvillea. What Does Bougainvillea Need to Thrive? The damage will return and the appearance of the stucco cannot simply be fixed anymore. They love the heat. Bougainvillea are often massive plants that sprawl into the tops of trees and over buildings. Chemical Control If youâre worried about stucco failure in your home, itâs crucial to diagnose and solve any problems as quickly as possible. This damage can be cut away, allowing new growth to emerge. The insect will cause significant visual damage to bougainvillea, although this does not apparently result in the death of the plants. The plant grips onto other plants with its strong thorns. Identify Symptoms Before Damage Progresses They need at least 6 hours a day to produce all that color we love. You may want to consider pruning it back a bit â after it finishes blooming, of course. As the bougainvillea does not need to support it's own weight, as a free standing tree like an oak does, the bougainvillea does not have a strong root system. The bougainvillea looper feeds from the edges of the leaves, which results in severe scalloping of the foliage. Attacks begin on the young tender shoots and leaves before progressing down the stem. They have red, pink, magenta or even white flowers that â¦ Sometimes whole sections of the stucco can separate exposing the grey base coat. You know your bougainvillea is dead if it does not put forth new growth the next growing season. A professional landscaper can advise on the best insecticide that will protect the plant without harming beneficial insects. The edges of the bougainvillea leaves will look chewed on and have a scalloped edge.