Michelle Wishhart is a writer based in Portland, Ore. She has been writing professionally since 2005, starting with her position as a staff arts writer for City on a Hill Press, an alternative weekly newspaper in Santa Cruz, Calif. An avid gardener, Wishhart worked as a Wholesale Nursery Grower at Encinal Nursery for two years. Aphids are small crawling insects that often gather on new growth and the undersides of leaves, sucking plant sap and causing distorted, curled leaves. Fertilise the plant after a month. Prune after flowering to avoid clipping off flower buds, and pinch back new growth to promote a full, bushy habit. Too much watering can cause wilt, as can too little. It sounds like the latter was the cause, and it's now recovered with leaves and flowers. Hello, I'm in Dallas, zone 8A, and have a large potted bougainvillea that sits out on our pool deck. Bougainvillea grow well in pots and can be planted in the ground in warm climates, but the vine is not at all cold-hardy and will die when confronted with temperatures near freezing. Mealybugs are attracted to bougainvilleas. Step 3 Expect some wilting due to transplant shock. The bougainvillea looper (Disclisioprocta stellata) is a nocturnal caterpillar with a green or brown body. Bougainvilleas are drought-tolerant plants that will not be harmed if they wilt slightly, advises Green Thumb Nursery of Ponchatoula, Louisiana. She has been published on various websites, specializing in garden-related instructional articles. Check for signs of fungal disease, which is also common to the plant. The problem you’re currently experiencing is due to reintroduction into the strong sunlight. They feed intensively on the sap of plants. Bougainvillea are tropical to semi-tropical flowering vines with spectacular flowerlike bracts and colourful leaves it produces all season long. In our climate, though not at all extreme, Bougainvillea is semi-deciduous. My bougainvillea seems to be wilting (not drying) and turning black. Do not fertilise sooner, as the roots will not have had time to establish, and the plant will be tender and can burn. Combine one part potting mix with two parts compost and one part sand. Bonnie Grant began writing professionally in 1990. Make a potting mix that comprises very little actual soil as it will dry out too quickly. If the plants begin to wilt severely, developing curled, yellow leaves, its past time to water. Treat the bougainvillea for a magnesium deficiency if older leaves are turning yellow. I have been pruning it to keep the shape and has been very healthy until a week ago, when the tips started wilting and turning black. Bougainvillea are heavy feeders that need consistent levels of nutrients applied in slow-release applications. The problem you’re currently experiencing is due to reintroduction into the strong sunlight. It has to get used to the new environment. In this recent the bougainvillea has taken off. A severe aphid infestation may cause significant wilting. Therefore the best time to trim it is when there's no danger of frost, and before the new growth gets established. Keep the bougainvillea in full sun. If it is in shady or partially shady conditions, it will become limp. Put your bougainvillea into the pot and fill the rest of the way with your planting mix. Fertilise monthly with balanced fertiliser (such as 5-5-5), that provides a slow release of nutrients. © Copyright 2020 Hearst Communications, Inc. It has to get used to the new environment. Bougainvilleas are generally not susceptible to serious diseases. Fertilise monthly with balanced fertiliser (such as 5-5-5), that provides a slow release of nutrients. Cool temperatures (below 0-1.111 degrees Celsius) will cause the plant to wilt… It consumes the edges of leaves, causing them to gradually curl inwards as the damaged tissue rots away. 14 years ago. Purple edges on leaves, with brown tips, indicate a potassium deficiency. This bougainvillea has been here since the last 1.5 years and has done well in growing quickly (too quickly), but has bloomed sparsely at the tips. Mulching before winter can help keep the plant warm. Maintain good pruning moving forward to keep the bougainvillea reined in. One of the causes for the leaves turning yellow (and yes, they turn completely yellow) is those cooler winter temperatures. In alkaline soils, bougainvillea may develop chlorosis, an unattractive yellowing of the leaves in which the veins remain green. Bougainvillea bloom on new growth so cutting it back will encourage more blooms the following season. American Phytopathological Society: First Report of Fusarium Wilt in Paper Flower, Louisiana State University Agriculture Center: Bougainvillea. It gets full sun probably 8 hours a day. Fill the new pot halfway with the planting mix you made. If the plant has been grown properly you can expect a new flush of bloom after vegetative growth. Too much fertiliser causes the plant to wilt but too little will cause the plant to slow its growth and stop producing flowers. Grow the plant where night temperatures are 18.3 degrees Celsius and day temperatures are between 23.9 and 35 degrees Celsius. Clemson Cooperative Extension: Bougainvillea, Green Thumb Nursery: Bougainvillea Growing Guide, University of California Statewide Integrated Pest Management Program: Aphids, Missouri Botanical Garden: Bougainvillea (Group), University of Connecticut: Fertilization of Trees, Shrubs, Vines and Groundcovers, The Minimum Temperature for Bougainvillea. Before that time, the leaves were just fine. 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