Gardening Questions And Answers
The signs that you have bougainvillea looper caterpillar is mainly damage to the leaves. The edges of the bougainvillea leaves will look chewed on and have a scalloped edge. A heavy infestation may even result in tender shoots being eaten and even complete defoliation of the affected bougainvillea vine.
Bougainvillea performs well in a relatively small container where its roots are slightly restricted. Use a regular potting soil without a high level of peat moss; too much peat retains moisture and may result in root rot. Any container used for growing bougainvillea must have at least one drainage hole.
The most common reasons for dying bougainvillea are over watering, boggy soil, cold weather and not enough sun. Bougainvilleas are not cold hardy and can die because of frost. Over watering and slow draining soils causes root rot, resulting in a dying bougainvillea. Always plant bougainvillea in full sun.
One of the primary causes that flowers drop off bougainvillea is low light levels. Although bougainvilleas tolerate brief dry periods, the vine requires regular water in order to bloom since it goes through water quickly. Don’t let that soil dry out completely or you may see your bougainvillea losing blooms.
The most common reasons for dying bougainvillea are over watering, boggy soil, cold weather and not enough sun. Bougainvilleas are not cold hardy and can die because of frost. Over watering and slow draining soils causes root rot, resulting in a dying bougainvillea. Bougainvillea prefer dry conditions.
Bougainvillea is a pollution tolerant plant and can help in the mitigation of air pollution besides its ornamental value in the landscaping. From the rich germplasm collection in NBRI Botanical Garden, tolerant plants have been experimented for road side plantation in view of mitigating the environmental pollution.
Bougainvillea is hardy to United States Department of Agriculture zones 9 to 11. It can withstand a light freeze but deep freezes will kill the roots. In areas below those zones, a bougainvillea in winter should be kept in containers and moved indoors. That way you won’t take a chance on disturbing the roots.
Bougainvilleas can get powdery mildew if there is not enough air circulation and light. Keeping the foliage too damp can also cause it. There’s no registered spray for powdery mildew on bougainvillea so I can only suggest that you prune back the affected plant parts. Then you’ll need to adjust the growing conditions.