Do the leaves have notched edges?
Are the leaves curled and distorted?
Are the leaves distorted, yellowed, and stippled?
Are the leaves covered with small bumps?
Notched edges on the leaves are caused by Vine weevils. The wingless, black bugs are adults that feed on the leaves of several plants. You can get rid of them by handpicking or by gently shaking the plant and collecting fallen beetles. Spray leaves several times with pyrethrin for major infestations.
Distorted and curled leaves are caused by aphids. These tiny insects cluster under leaves and on growing tips where they feed on plant sap. You can control them by washing them off the plant with water spray. Insecticidal soap should be used with severe infestations.
Leaves stippled with yellow are caused by mites. These tiny, spider-like pests feed by sucking sap from the underside of the plant's leaves. You can control spider mites by spraying plants thoroughly with water 2-3 times a day for several days. For severe infestations, spray plants with insecticidal soap.
Leaves covered by small bumps are caused by scales. Scrape off minor infestations with your fingernail. Prune out badly infested growth, or use a soft brush and soapy water to gently scrub the scales off the stems. Control scales by spraying insecticidal oil during the growing season.
Euonymus caterpillars create an abundance of webbing where they hide and feed. These yellowish caterpillars can defoliate a shrub. Euonymus caterpillars can be treated with Bacillus thuringiensis. Remove the webbing before treating the plant. You may be able to treat a small infestation with a blast from a water hose.
https://www.gardeningknowhow.com/ornamental/shrubs/burning-bush/bugs-on-burning-bush-plants.htm
Ellis, B. W., Bradley, F. M., & Atthowe, H. (1996). The Organic gardener's handbook of natural insect and disease control: a complete problem-solving guide to keeping your garden & yard healthy without chemicals. Emmaus, Pa.: Rodale Press.
Sreten null
Hi! I’m Sreten Filipović. I graduated from the Faculty of Agriculture at the University of Belgrade, with a master's degree in Environmental Protection in Agricultural Systems. I’ve worked as a researcher at Finland's Natural Resources Institute (LUKE) on a project aimed at adapting south-western Finland to drought episodes. I founded a consulting agency in the field of environment and agriculture to help farmers who want to implement the principles of sustainability on their farms. I’m also a founding member of the nonprofit organization Ecogenesis from Belgrade whose main goal is non-formal education on the environment and ecology. In my spare time, I like to write blog posts about sustainability, the environment, animal farming, horticulture, and plant protection. I’ve also published several science-fiction short stories.
You can find me on LinkedIn at https://www.linkedin.com/in/sreten-filipovi%C4%87-515aa5158/
