— Permethrin-based insecticides are effective against viburnum borers, but the application must be carefully timed to catch the adults when they are flying. Cultural management: Viburnum crown borers are attracted to stressed plants. · Biological management: Beneficial nematodes (Heterorhabditis bacteriophora) can be ... Proper watering, fertilizing, and pruning can keep plants healthy. Physical Barriers: Tree wraps can prevent some borers from reaching the bark to lay eggs. 23 Agu 2023 — Treating Borers on Viburnum ... Control is often difficult or ineffective, as the larvae tunnel beneath the bark, and the adults are quick fliers. — Prevention & Control: Provide good growing conditions for the viburnum, especially additional water during droughts, good soil drainage, and ... — Chemical control is targeted during the adult moth egg-laying period. Larvae under the bark are protected from treatments. Pheromone traps can ... 22 Mei 2007 — Control is achieved by applying permethrin (Astro) to the base of the plant when beautybush and mock orange bloom. --- 3) Spraying with an insecticide containing insecticidal soap and pyrethrin will help, but it works best at the beginning of the season, when ... Stems infested with currant borer wilt and die back. CONTROL: During moth flight, spray stems with methoxychlor or chlorpyrifos two or three times at 2-week ... — Treatment is applied either as a spray or soil drench. Spray insecticides should contain permethrin or carbaryl to be effective and should be applied directly ...
