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Spiraea (Spiraea)-Snapdragon plume moth Platyptilia antirrhina Pest description and crop damage The small greenish larvae mine leaves. Later, they feed on terminal leaves and bore into developing flowers and inside the stems. Adult is grayish brown with n ...
Spiraea (Spiraea)-Spider mite Tetranychus spp. See: Common Pests of Nursery Crops Spiraea (Spiraea) Spider mite ...
Spruce (Picea)-Carnation tortrix Cacaecimorpha pronubana See: Laurel, Portuguese (Prunus)-Carnation tortrix Spruce (Picea) Carnation tortrix ...
Spruce (Picea)-Coneworm Dioryctria spp. Pest description and crop damage Small, brownish cream larvae of shoot moths bore into fresh green cones. May also bore into trunk cambium, branches, and shoots. See "Spruce" in: Christmas Tree Plantation ...
Spruce (Picea)-Cooley spruce gall adelgid Adelges cooleyi Pest description and crop damage Aphid-like, with a covering of white, woolly exudate. Cone-like galls are formed at ends of twigs. See "Spruce" in: Christmas Tree Plantation Pests Manage ...
Spruce (Picea)-Douglas-fir tussock moth Orgyia pseudotsugata Pest description and crop damage Mature larvae are about 1 inch long, hairy, gray or light brown, with black heads. Several light brown or cream-color tufts of hair are on the body. Defoliate tr ...
Spruce (Picea)-Pine needle scale Chionaspis pinifoliae See: Common Pests of Nursery Crops Pest description and crop damage Elongate, flat, white scale on leaves. Also attacks pine, fir, and occasionally cedar. See "Spruce" in: Christmas Tree Pla ...
Spruce (Picea)-Silverspotted tiger moth Halisidota argentata Pest description and crop damage Larvae hibernate in dense clusters on twigs and become active on warm winter days. Larvae mature in June. Pine, arborvitae, and true fir also are subject to atta ...
Spruce (Picea)-Spruce aphid Elatobium abietinum See: Common Pests of Nursery Crops Pest description and crop damage Small, dull green aphid causes extreme needle drop. Aphid appear early in the season (about February) and may increase rapidly during March ...
