You are here.
Lilac
Fall Webworm: Formulations of acephate, azadirachtin, Bacillus thuringiensis, bifenthrin (Bifenthrin Pro Multi-Insecticide, Onyx Insecticide, Talstar F, Talstar Lawn & Tree Flowable, Talstar GC Flowable, Talstar Nursery Flowable, and TalstarOne Multi-Insecticide only), carbaryl, chlorpyrifos (Dursban 50W only), cryolite, cyfluthrin, cyfluthrin and imidacloprid, deltamethrin, diflubenzuron, lambda-cyhalothrin, permethrin (Astro Insecticide and Permethrin Pro only), pyrethrins and piperonyl butoxide, spinosad, tau-fluvalinate, tebufenozide, and trichlorfon are labeled for fall webworm management.
Management Hints: Treat when webs first appear from late June through July. (p.166)
Lilac (Ash) Borer: Formulations of bifenthrin (Onyx Insecticide only), chlorpyrifos (Dursban 50W only), and permethrin (Astro Insecticide and Permethrin Pro only) are labeled for borer management.
Management Hints: Clearwing borer sex pheromone traps can assist in determining when an insecticide should be applied. Treat stems from mid-May through early August. The first insecticide application should be made 7 to 10 days after the first male is captured in a pheromone trap. (p. 260)
Lilac Leafminer: Formulations of azadirachtin, bifenthrin (Bifenthrin Pro Multi-Insecticide, Onyx Insecticide, Talstar F, Talstar Lawn & Tree Flowable, Talstar GC Flowable, Talstar Nursery Flowable, and TalstarOne Multi-Insecticide only), chlorpyrifos (Dursban 50W only), cyfluthrin and imidacloprid, deltamethrin (5SC only), diflubenzuron, imidacloprid, lambda-cyhalothrin (for adult leafminers), oxydemetonmethyl, permethrin, and pyrethrins and piperonyl butoxide are labeled for leafminer management. Marathon 1% G and Marathon 60 WP are labeled for use only on plants grown in containers, flats, benches, or beds.
Management Hints: Eggs are laid by female moths along the midrib and other veins on the underside of the foliage. Several generations occur each year. Adult moths may be found throughout the summer months. Registered insecticides should be applied when larvae are hatching from eggs or against adults prior to egg laying. (p. 196)
Lilac Rust Mite (eriophyid mite): Formulations of abamectin, carbaryl, horticultural oil, insecticidal soap (M-Pede only), spiromesifen, and tau-fluvalinate are labeled for eriophyid mite management.
Management Hints: A management material should be applied when an infestation is detected and mite life stages are present on the host foliage during the growing season.
Oystershell Scale: Formulations of acephate, acetamiprid, azadirachtin (Ornazin 3% EC only), buprofezin, carbaryl, chlorpyrifos (Dursban 50W only), cyfluthrin, cyfluthrin and imidacloprid, deltamethrin, dinotefuran, horticultural oil, hydrophobic extract of neem oil, insecticidal soap, lambda-cyhalothrin (Battle GC, Demand CS, Scimitar CS, Scimitar GC, and Scimitar WP only), malathion, and methidathion are labeled for crawler management.
Management Hints: Select and apply horticultural spray oils according to label directions. Crawler sprays should be applied from late May through early June. Repeat applications may be needed. Be sure to follow label directions. Prune and destroy heavily infested twigs and branches. (p. 370)
White Prunicola Scale: Formulations of acephate, azadirachtin (Ornazin 3% EC only), buprofezin, carbaryl, chlorpyrifos (Dursban 50W only), cyfluthrin, cyfluthrin and imidacloprid, deltamethrin, dinotefuran, horticultural oil, hydrophobic extract of neem oil, insecticidal soap, lambda-cyhalothrin (Battle GC, Demand CS, Scimitar CS, Scimitar GC, and Scimitar WP only), and methidathion are labeled for crawler management.
Management Hints: This scale insect has three generations per year. Treat when crawlers are first observed in early May, late June, and late August. (p. 392)