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Hawthorn (Crataegus)-Pear sawfly Caliroa cerasi See: Cherry, flowering (Prunus)-Pear sawfly Hawthorn (Crataegus) Pear sawfly ...

Hawthorn (Crataegus)-Scale insect Several species See: Common Pests of Nursery Crops Hawthorn (Crataegus) Scale insect ...

Hawthorn (Crataegus)-Spider mite Tetranychus spp. See: Common Pests of Nursery Crops Hawthorn (Crataegus) Spider mite ...

Hemlock (Tsuga)-Coneworm Dioryctria spp. Pest description and crop damage The adult coneworm is a mottled gray moth. The coneworms are small and cream-color or light brown with a darker head. Coneworms attack true firs by boring into shoot tips or stems, ...

Hemlock (Tsuga)-Hemlock adelgid Adelges tsugae Pest description and crop damage Hemlock adelgids are aphid-like insects. They appear as white, woolly tufts on the bark and needles. Adults are black beneath the woolly material. Needles drop prematurely, we ...

Hemlock (Tsuga)-Hemlock scale Abgrallaspis ithacae See: Common Pests of Nursery Crops Pest description and crop damage Hemlock scale feed on the needles of Eastern hemlock (Tsuga canadensis) and spruces (especially Colorado blue). Adult scale are round to ...

Holly (Ilex)-Aphid Several species See: Common Pests of Nursery Crops Holly (Ilex) Aphid ...

Holly (Ilex)-Brown soft scale Coccus hesperidum See: Common Pests of Nursery Crops Pest description and crop damage Flat and brown. Small, about 0.19 inch long. When abundant, presence is indicated by sooty mold. Holly (Ilex) Brown soft scale ...

Holly (Ilex)-Cottony camellia scale Pulvinaria floccifera See: Common Pests of Nursery Crops Holly (Ilex) Cottony camellia scale ...

Holly (Ilex)-Holly bud moth Rhopobota naevana ilicifoliana Pest description and crop damage The adult holly bud moth is a mottled brown and black insect with a wingspan of approximately 0.5 inch. The larvae are greenish-brown with dark heads and about 0.5 ...