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Viburnum
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 (DuraGuard ME and 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), 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 aphid infestations are first detected. Do not apply acephate to Viburnum suspensum. (pp. 300, 310)
Fourlined Plant Bug: Formulations of acetamiprid, 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, insecticidal soap, lambda-cyhalothrin (Battle GC, Demand CS, Scimitar CS, Scimitar GC, and Scimitar WP only), permethrin (Astro Insecticide and Permethrin Pro only), pyrethrins and piperonyl butoxide, and thiamethoxam are labeled for plant bug management.
Management Hints: This species overwinters as an egg in slits made in plant tissue. Young, bright-red nymphs with black dots on the second body segment (thorax) are active in May and June. Adults are bright green with four black stripes. Feeding by this species causes small black spots to form on the leaf surface. Eventually these areas turn brown and drop from the leaf, leaving small holes in the foliage. Treatment should be made against the young nymphs in mid- to late May. (p. 396)
Indian Wax Scale: Crawlers may be managed with acephate, acetamiprid, azadirachtin (Ornazin 3% EC only), buprofezin, carbaryl, chlorpyrifos (DuraGuard ME and Dursban 50W only), cyfluthrin, cyfluthrin and imidacloprid, deltamethrin, dinotefuran, horticultural oil, hydrophobic extract of neem oil, imidacloprid, insecticidal soap, lambda-cyhalothrin (Battle GC, Demand CS, Scimitar CS, Scimitar GC, and Scimitar WP only), malathion, methidathion, and thiamethoxam. 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. This species overwinters as adult females. Treat the crawler stage when they are active on an infested plant from June through mid-July. Do not apply acephate to Viburnum suspensum. Repeat applications may be needed. (p. 356)
Southern Red Mite: 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 (DuraGuard ME and Dursban 50W only), deltamethrin, disulfoton, etoxazole, fenbutatin-oxide, fenpropathrin, fenpyroximate, hexythiazox, horticultural oil, hydrophobic extract of neem oil, insecticidal soap, lambda-cyhalothrin (Battle GC, Demand CS, Scimitar CS, Scimitar GC, and Scimitar WP only), oxydemeton-methyl, pyridaben, spinosad, spiromesifen, and tau-fluvalinate are labeled for spider mite management.
Management Hints: Select and apply horticultural spray oil according to label directions. Treat in spring before populations begin to increase. Repeat applications may be necessary. (p. 475)
Twobanded Japanese Weevil: Formulations of acephate, Beauveria bassiana, bifenthrin (Onyx Insecticide, Talstar GC Flowable, and Talstar Lawn & Tree Flowable only), cyfluthrin and imidacloprid, lambda-cyhalothrin (Battle GC, Demand CS, Scimitar CS, Scimitar GC, and Scimitar WP only), permethrin (Astro Insecticide and Permethrin Pro only), and pyrethrins and piperonyl butoxide are labeled for management of adult weevils.
Management Hints: This brown weevil feeds during the day. Marginal notching of new foliage is a symptom of adult feeding. Treat infested plants when new foliage has notched margins during early July through August. Do not apply acephate to Viburnum suspensum. (p. 244)
Viburnum Leaf Beetle: Formulations of azadirachtin, chlorpyrifos (Dursban 50W only), cyfluthrin and imidacloprid, horticultural oil (larvae only), imidacloprid, lambda-cyhalothrin (Warrior with Zeon Technology only), pyrethrins and piperonyl butoxide, and spinosad (larvae) are labeled for leaf beetle management. Marathon 1% G and Marathon 60 WP are labeled for use against viburnum leaf beetles only on plants grown in containers, flats, benches, or beds.
Management Hints: Planting resistant viburnum species such as Koreanspice viburnum (Viburnum carlesii), Burkwood viburnum (V. burkwoodii), doublefile viburnum (V. plicatum var. tomentosum), Judd viburnum (V. x juddii), lantanaphyllum viburnum (V. x rhytidiophylloides), and leatherleaf viburnum (V. rhytidiophyllum ) should reduce the need to manage this pest. This species overwinters in the egg stage in twigs. Larvae and adults feed on the host plant foliage. Larvae may consume all but the major veins of the leaves. After leaves drop in the fall, sites on the twigs where eggs have been laid become more noticeable. Prune out these eggs from late October through March before they hatch in the spring. Infested plants should be treated when young larvae are actively feeding on the foliage from late April through early May. (p. 224)