You are here.
Hawthorn
Aphids: Horticultural spray oil can be applied as a dormant treatment. Formulations of abamectin, acephate, acetamiprid, azadirachtin, Beauveria bassiana, 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, cyfluthrin and imidacloprid, deltamethrin, dinotefuran, disulfoton, fenpropathrin, horticultural oil, hydrophobic extract of neem oil, imidacloprid, lambda-cyhalothrin (Battle GC, Demand CS, Scimitar CS, Scimitar GC, and Scimitar WP only), malathion, oxydemetonmethyl, permethrin (Astro Insecticide and Permethrin Pro only), pymetrozine, pyrethrins and piperonyl butoxide, pyriproxyfen, tau-fluvalinate, and thiamethoxam are labeled for aphid management. Marathon 1% G and Marathon 60 WP are labeled for use only on plants grown in containers, flats, benches, or beds.
Management Hints: Select and apply horticultural spray oil according to label directions. Treat when aphids first appear and repeat as needed. (p. 300)
Eastern Tent Caterpillar: 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, insecticidal soap, lambda-cyhalothrin, malathion, permethrin (Astro Insecticide and Permethrin Pro only), phosmet, pyrethrins and piperonyl butoxide, spinosad, tau-fluvalinate, and tebufenozide are labeled for tent caterpillar management.
Management Hints: Treat areas around web when first noticed in April and May. Prune viable egg masses from small twigs during the winter. (p. 168)
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, difl ubenzuron, lambda-cyhalothrin, permethrin (Astro Insecticide and Permethrin Pro only), pyrethrins and piperonyl butoxide, spinosad, tau-fluvalinate, tebufenozide, and trichlorfon are labeled for webworm management.
Management Hints: Treat when webs are small in late June through July. (p.166)
Flatheaded Appletree Borer: Formulations of bifenthrin (Onyx Insecticide only), chlorpyrifos (Dursban 50W only), and permethrin (Astro Insecticide and Permethrin Pro only) are labeled for wood-boring beetle management.
Management Hints: Fertilization and irrigation will promote a healthy plant and reduce successful attack by this pest. Treat trunks in early June, July, and August. Repeat applications according to label directions. (p. 270)
Hawthorn Lace Bug: Formulations of acephate, Beauveria bassiana (BotaniGard ES only), 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), cyfluthrin, cyfluthrin and imidacloprid, deltamethrin, disulfoton, fenpropathrin, horticultural oil, imidacloprid, insecticidal soap, lambda-cyhalothrin (Battle GC, Demand CS, Scimitar CS, Scimitar GC, and Scimitar WP only), malathion, permethrin, pyrethrins and piperonyl butoxide, and thiamethoxam are labeled for lace bug management. Marathon 1% G and Marathon 60 WP are labeled for use only on plants grown in containers, flats, benches, or beds.
Management Hints: Treat when lace bugs are small in May. Repeat applications may be necessary. (p. 426)
Hawthorn Leafmining Sawfly: Formulations of acephate, azadirachtin, carbaryl, chlorpyrifos (Dursban 50W only), cyfluthrin, cyfluthrin and imidacloprid, deltamethrin, diflubenzuron, imidacloprid (Merit 2, Merit 75 WP, and Merit 75 WSP only), insecticidal soap, lambda-cyhalothrin, and spinosad are labeled for sawfly management.
Management Hints: Treat infested plants when the host plant’s first leaf clusters begin to unfold and flower buds begin to open. Mature larvae abandon the leaves during mid-June and drop to the ground where they spend the winter. At the beginning of the growing season this species is in the pupal stage in the ground. (p. 188)
Leafhoppers: Formulations of acephate, acetamiprid, 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), buprofezin, carbaryl, chlorpyrifos (Dursban 50W only), cyfluthrin, cyfluthrin and imidacloprid, deltamethrin, disulfoton, fenpropathrin, hydrophobic extract of neem oil, imidacloprid, insecticidal soap, lambda-cyhalothrin (Battle GC, Demand CS, Scimitar CS, Scimitar GC, and Scimitar WP only), malathion, permethrin, phosmet, pyrethrins and piperonyl butoxide, tau-fluvalinate, and thiamethoxam are labeled for leafhopper management.
Management Hints: Treat when leafhoppers are first noticed and repeat as necessary according to label directions. (pp. 414, 416, 418)
Mites: Horticultural spray oil can be applied as a dormant treatment. Formulations of abamectin, bifenthrin (Bifenthrin Pro Multi-Insecticide, Onyx Insecticide, Talstar F, Talstar Lawn & Tree Flowable, Talstar GC Flowable, Talstar Nursery Flowable, and TalstarOne Multi-Insecticide only for management of European red mite), chlorpyrifos (Dursban 50W only), clofentezine (for management of European red mite), deltamethrin, dicofol (for management of European red mite), disulfoton, etoxazole (for management of European red mite), fenpropathrin (for management of European red mite), fenpyroximate (for management of spider mites), hexythiazox (for European red mite), horticultural oil, hydrophobic extract of neem oil, insecticidal soap, lambda-cyhalothrin (Battle GC, Demand CS, Scimitar CS, Scimitar GC, and Scimitar WP only), malathion, oxydemeton-methyl, spinosad, spiromesifen, and tau-fluvalinate are labeled for mite management.
Management Hints: Select and apply horticultural spray oil according to label directions. Treat when mites are first seen. Repeat applications may be necessary. (pp. 475, 486)
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 oil according to label directions. Treat when crawlers are active from late May through early June. Repeat applications may be needed. Prune and destroy heavily infested twigs and branches. (p. 370)
Pear Sawfly: Formulations of acephate, azadirachtin, carbaryl, chlorpyrifos (Dursban 50W only), cyfluthrin, cyfluthrin and imidacloprid, deltamethrin, diflubenzuron, horticultural oil (larvae), imidacloprid (Merit 2, Merit 75 WP, and Merit 75 WSP only), insecticidal soap, lambda-cyhalothrin, spinosad, and thiamethoxam are labeled for sawfly management.
Management Hints: Treat infested plants when larvae are present in early June and early August. (p. 130)
Roundheaded Appletree Borer: A formulation of chlorpyrifos (Dursban 50W only) is labeled for borer management.
Management Hints: Fertilization and irrigation will promote a healthy plant and reduce successful attack by this pest. Treat trunks in early June and early July. Repeat applications may be needed. Be sure to follow label directions for repeat applications. (p. 278)