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Hickory
Aphids: Apply horticultural spray oil 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, lambdacyhalothrin (Battle GC, Demand CS, Scimitar CS, Scimitar GC, and Scimitar WP only), oxydemeton-methyl, 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 are first observed in the spring. Repeat application of an insecticide may be needed to manage an aphid infestation. (p. 310)
Cankerworm: 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), cyfluthrin, cyfluthrin and imidacloprid, deltamethrin, diflubenzuron, lambda-cyhalothrin (Battle GC, Demand CS, Scimitar CS, Scimitar GC, and Scimitar WP only), permethrin (Astro Insecticide and Permethrin Pro only), phosmet (spring cankerworm only), pyrethrins and piperonyl butoxide, spinosad, tau-fluvalinate, and tebufenozide (fall cankerworm only) are labeled for cankerworm management.
Management Hints: Apply when small larvae are active in May. (pp. 142, 144)
Elm Spanworm: Formulations of acephate (Turf, Tree, & Ornamental Spray only), 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 (Battle GC, Demand CS, Scimitar CS, Scimitar GC, and Scimitar WP only), permethrin (Astro Insecticide and Permethrin Pro only), phosmet, pyrethrins and piperonyl butoxide, tau-fluvalinate, and tebufenozide are labeled for management of this pest.
Management Hints: Apply when small larvae are active in mid- to late May. (pp. 144, 146)
European Fruit Lecanium: Apply horticultural spray oil as a dormant treatment. Formulations of acephate, carbaryl, chlorpyrifos (Dursban 50W only), cyfluthrin, cyfluthrin and imidacloprid, deltamethrin, dinotefuran, horticultural oil, imidacloprid, insecticidal soap, lambda-cyhalothrin, methidathion, and thiamethoxam are labeled for crawler management.
Management Hints: Select and apply horticultural spray oil according to label directions. Crawlers are active from mid-June through mid-July. Repeat applications may be necessary. Natural enemies frequently attack this species when population levels are high. That results in the decline of an infestation after 2 or 3 years. (p. 364)
Fall Webworm: Formulations of 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, naled, permethrin (Astro Insecticide and Permethrin Pro only), pyrethrins and piperonyl butoxide, spinosad, tau-fluvalinate, tebufenozide, and trichlorfon are registered for webworm management. Formulations of acephate are labeled to manage fall webworm on hickory. Naled is not labeled for management of fall webworm on hickory.
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)
Gypsy Moth: Refer to Gypsy Moth. Prior to applying any control material, refer to individual labels for host-plant clearance information. (pp.138, 140)
Hickory Leafstem Gall Phylloxera: There are no chemical treatments registered for effective management of this insect.
Management Hints: These galls may be 1 inch in diameter and are formed from plant tissues associated with shoot bark and petioles of hickory. The overwintering egg stage hatches into a life stage known as the stem mother. This stage can be found on the host plant from mid- to late April. The gall is fully formed by mid-May. While the gall is growing, the cavity inside is being filled with 1,000 or more eggs. The life cycle is completed in one year. To maintain the health of an infested hickory, you may prune all galls before adults emerge in mid-May. Fertilization and irrigation will also promote a healthy plant. (p. 460)
Hickory Tussock Moth: 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), 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, and tau-fluvalinate are labeled for management of this pest.
Management Hints: Young larvae feed in groups. Caterpillars require about 3 months to complete their development. Hairy oval cocoons are built on the ground in September. Treat infestations when larvae are small, from late June through early August. (p. 160)
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), chlorpyrifos (Dursban 50W only), deltamethrin, disulfoton, horticultural oil, hydrophobic extract of neem oil, insecticidal soap, lambda-cyhalothrin, oxydemeton-methyl, spinosad, spiromesifen, and tau-fluvalinate are labeled for mite management.
Management Hints: Select and apply horticultural spray oil according to label directions. Apply in the spring before populations start to increase. Repeat applications according to label directions. (p. 475)
Twig Girdler: There are no chemical treatments registered for management of this insect.
Management Hints: A symptom of attack by this longhorned beetle is an abundance of twigs and small branches under a tree late in the growing season. Twigs and small branches killed by this pest may be more than 0.5 meter long. Pick up and destroy the dropped twigs and branches before May to reduce the impact of this borer. (p. 264)
Twig Pruner: There are no chemical treatments registered for management of this insect.
Management Hints: A symptom of attack by this pest is an abundance of twigs under a tree late in the growing season. Twigs and small branches up to 30 millimeters in diameter may accumulate on the ground beneath trees. A cleanly cut concave end on a twig with a hole in the center that may be plugged with fibrous woody tissue could also confirm the presence of this pest. Pick up and destroy the dropped twigs and branches before May to reduce the impact of this longhorned beetle. (p. 264)
Yellownecked Caterpillar: 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), carbaryl, chlorpyrifos (Dursban 50W only), cryolite, cyfluthrin, cyfluthrin and imidacloprid, deltamethrin, lambdacyhalothrin (Battle GC, Demand CS, Scimitar CS, Scimitar GC, and Scimitar WP only), permethrin (Astro Insecticide and Permethrin Pro only), pyrethrins and piperonyl butoxide, spinosad, and tau-fluvalinate are labeled for management of this pest.
Management Hints: Applications may be made from July through mid-September when larvae are present and infestations are severe. Buds are usually set on host plants late in the growing season so that lowering population levels will be more aesthetic in nature than for plant health care reasons. Remove and destroy colonies of young larvae when observed on the foliage of trees. (p. 154)