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The adult weevil is matte black with fused wing covers, and is unable to fly. It feeds at night on the outer edges of leaves, causing the leaves to have a notched margin. Broadleaved evergreen plants such as Camellia , Rhododendron , Euonymus and Bergenia are particularly prone to damage, although a wide range of different garden plants are ...
Chemical management of annual bluegrass weevil is the most effective way to reduce the pest population. Preventive applications of insecticides, especially pyrethroids, should be timed with the local Forsythia bloom (half green/half gold)in order to cut the population before the first generation of eggs are laid for the year. [4]
repels flying insects [4] Chives: repels carrot fly, Japanese beetle, [2] and aphids [3] Chrysanthemums: repel roaches, ants, the Japanese beetle, ticks, silverfish, lice, fleas, bedbugs, and root-knot nematodes [2] Citronella grass: repels insects, may deter cats [5] Clovers: repel aphids and wireworms [3] Common lantana: repels mosquitoes [1 ...
Ground beetles, nematodes and fungi can kill both immature and adult weevils. The parasitic wasp attacks pine weevil larvae only. [5] Fungus Tarichium hylobii (from the order Entomophthorales order) is a pathogen of Hylobius abietis, especially in the Czech Republic. [7] Entomopathogenic nematodes are microscopic worms that kill only insects.
Imidacloprid is a systemic insecticide belonging to a class of chemicals called the neonicotinoids which act on the central nervous system of insects. The chemical works by interfering with the transmission of stimuli in the insect nervous system. Specifically, it causes a blockage of the nicotinergic neuronal pathway.
Species of spruce trees face assault from insects such as the white pine weevil (Pissodes strobi), Cooley spruce gall adelgid, and the pine needle scale (Chionaspis pinifoliae). The final category of Christmas trees, pines, are commonly susceptible to insect infestation and damage from the pine root collar weevil ( Hylobius radicis ), Zimmerman ...