Like aphids and mealybugs, these immobile pests produce honeydew, invite sooty mold and cause curled, yellowing, wilting or prematurely falling leaves. Texas A&M AgriLife Extension: Growing Bougainvilleas, Clemson Cooperative Extension: Bougainvillea, Fresh From Florida: Bacterial Leaf Spot of Bougainvillea, Robust and adaptable, bougainvilleas (Bougainvilleas spp.). Do not use infected leaves in compost or purchase plants that show evidence of leaf spot. Green melon and black cowpea aphids are among several sap-consuming pests that attack bougainvilleas. Soft scale insects may attack bougainvillea, causing a host of symptoms that include leaf curl. ), tropical evergreen woody vines native to South America, are thorny plants best known for their colorful blooms. vines' modest flowers peep from behind dazzling, papery bracts of burlesque-pink, red, orange, gold, purple or white. Bougainvillea's few shortcomings include its cane-protecting thorns and vulnerability to leaf-curling pests. University of California Statewide Integrated Pest Management Program: Bougainvillea—Bougainvillea spp. Brown soft scales management methods include pruning affected twigs and spraying with horticultural or narrow-range oils. The fan dancers of the botanical stage, bougainvillea (Bougainvillea spp.) are sprawling vines or shrubs that generally require minimal interference from the gardener in order to produce bright green leaves and spectacularly showy red, pink, white or purple flower bracts. All Rights Reserved. Soft scale may leave behind honey dew, which attracts a sooty mold. Nematode Disease Nematodes are parasitic roundworms that attack bougainvillea roots. Bacterial leaf spot is one of the most common diseases affecting all varieties of begonias. Plan the perfect garden with our interactive tool →. Control Leaf Curl disease using Homemade Pesticide. Scale insects or mealybugs are plant parasites, commonly found in household gardens. Symptoms: The smaller, unhatched scale insects can be observed on the underside of some leaves, covered in a waxy coating. Control aphids and mealybugs by blasting your bougainvillea with a strong spray of water as soon as they appear to remove both pests and honeydew. They inject toxins into the leaves while feeding with their tissue-piercing mouthparts. These flat, oval insects typically congregate on tender new stems and foliage. A non‐fluorescent bacterium was isolated consistently from the lesions and confirmed as the causal agent by Koch's postulates. Brown soft scales resemble reddish-brown beads more closely than insects. It is NOT common for your bougainvillea to be affected by these pests and diseases if you follow BGI’s Rules for Care, and fertilize with Bougain® which contain a significant amount of micronutrients – vital for healthy, blooming bougainvillea. Bougainvillea Disease 2: Scale Disease. This is a very dangerous disease for Jasmine because the spores of the fungus can survive throughout the winter in the soil. Her thousands of published articles cover topics from travel and gardening to pet care and technology. Bougainvillea Leaf Curl By: Michelle Wishhart 28 January, 2014 John Foxx/Stockbyte/Getty Images Robust and adaptable, bougainvilleas (Bougainvilleas spp.) Waxy, white oval pests massing in clumps on a bougainvillea's leaves are longtailed, citrus or pink-hibiscus mealybugs. This can be identified by brown spots on the leaves. © Copyright 2020 Hearst Communications, Inc. These sun-loving, salt-tolerant performers are naturals for coastal and inland regions in U.S. Department of Agriculture plant hardiness zones 9 through 11. Persistent scale infestations may kill entire branches and drain the vines' vigor. - YouTube Eventually, leaf edges may become ragged and the leaves may have a puckered, curled appearance. Bacterial leaf spot initially appears as small, reddish spots on foliage that grow to become large dead areas. The fan dancers of the botanical stage, bougainvillea (Bougainvillea spp.) Aphids are sap-sucking insects that often feed in groups on new growth. Diseases Caused by Insects Insects can not only eat away the leaves of the bougainvillea, they can cause moldy fungus diseases. During feeding, some species inject a toxin into the plant which can cause leaf curl and distortion, according to the University of California Statewide Integrated Pest Management Program. They feed intensively on the sap of plants. Bougainvillea plants are naturally immune to bacterial diseases and common garden pests. Leaves may also yellow and drop prematurely. They ramble up walls, frame doorways, cascade from planters or shine as patio trees. Mealybugs are attracted to bougainvilleas. A part of the bougainvillea’s appeal is that they are relatively disease and pest-free plants. A healthy vine is less likely to succumb to pests and disease. Like aphids, the one-eighth- to one-quarter-inch pests feed on sap and secrete honeydew, exposing the plants to sooty mold. Learn which plants thrive in your Hardiness Zone with our new interactive map! If aphids are concentrated in large numbers in one part of the plant, prune that area. Boungainvilleas are best suited for U.S. Department of Agriculture plant hardiness zone 10, according to the Clemson Cooperative Extension, though with winter protection they may be grown in zone 9. The green aphid feeds on the new plant tissue and sucks out the fluid. Dislodge aphid colonies by spraying them with a direct stream of water, or combat them with natural predators by purchasing and releasing lady beetles. Bacterial leaf spot initially appears as small, reddish spots on foliage that grow to become large dead areas. It consumes the edges of leaves, causing them to gradually curl inwards as the damaged tissue rots away. The main symptom of Peach Leaf Curl is red pimple-like deformation on young leaves which, as they grow, become unsightly, reduces the tree's ability to … The disease pathogen is spread by water, so avoid overhead irrigation or otherwise splashing water on the leaves. The pests also secrete honeydew, a gluelike, carbohydrate-rich waste that covers the leaves, branches and surrounding surfaces, and feeds sooty mold fungi. Copyright Leaf Group Ltd. // Leaf Group Lifestyle. Always follow the manufacturer's specifications when spraying oils or chemicals. Follow label instructions exactly and keep oil stored safely out of the reach of children. To control a severe scale infestation, apply a refined horticultural oil evenly to the tops and undersides of leaves in late winter or early summer, when young scale crawlers are active. Almost every plant has one or more aphid species that occasionally feeds on it and this is true with bougainvillea. Remove infected leaves and destroy them. Wishhart holds a Bachelor of Arts in fine arts and English literature from the University of California, Santa Cruz. Like any plant, however, bougainvilleas can develop foliage problems such as leaf curl.