Pine Bark Adelgid (Pineus strobi) GDD Window (base 50): 25-100 Overview: 1/16″ long, soft-bodied, aphid-like insects. Adult females are bluish-green, covered with cottony, waxy strands. Overwinter as partially grown females, maturing into … Read More
Eastern Spruce Gall Adelgid (Adelges abietis) GDD Window (base 50): 25-100 Overview: 1/16″ long, soft-bodied, aphid-like insects. Adult females are bluish-green, covered with cottony, waxy strands. Overwinter as partially grown females, maturing … Read More
Cooley Spruce Gall Adelgid (Adelges cooleyi) GDD Window (base 50): 25-120 – spring control of overwintering females, 90-180 – 1st adults active (Douglas-fir), 210-310 – 1st galls visible (spruce) Overview: … Read More
Adelgids (Adelgidae) GDD Window (base 50): 22-618, depending on species Overview: Small, aphid-like insects associated with conifers 1.5mm in length, varying in color by species, from dark reddish-brown to purplish-black. May or … Read More
Balsam twig aphid (Mindarus abietinus) GDD Window (base 50): 100-150 Overview: 1/16 to 1/8″ long, appearance varies with life stage Eggs are brown and covered in white waxy rod-like structures … Read More
Aphids (Aphidoidea) GDD Window (base 50): 7-120 Overview: Small, 1/16″ to 1/8″ long, soft-bodied, pear-shaped insects Range from pink, green, blue-green, black, brown, tan, to yellow in color. May be … Read More
Volutella Blight of Buxaceae Overview: Caused by Coccinonectria & Pseudonectria spp. Specifically, boxwood, pachysandra, and sarcococca Mature leaves are more resistant than young leaves Warm weather pathogen: 68-77F+, 85%+ humidity is … Read More
Bagworm (Thyridopteryx ephemeraeformis) GDD Window (base 50): 600-900 Overview: Eggs overwinter in 1-2.5″ pinecone-shaped cases or “bags” that the caterpillar forms and suspends from host plants Small black/gray and amber … Read More
Japanese Maple Scale (Lopholeucaspis japonica) GDD Window (base 50): 800-1200 (1st gen), 2500+ (2nd gen) Overview: Host plants: Large host range, including maples, firethorn, serviceberry, lilac, cotoneaster, Prunus 1st generation crawlers … Read More
Juniper Scale (Carulaspis juniperi) GDD Window (base 50): 22-148 (dormant), 707-1260 (crawlers) Overview: Female covers are circular and white (1/16” in diameter) Male covers are elongated and white, but smaller in size … Read More