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Landscape Michael R. Bush and Sharon J. Collman Latest revision: March 2024 Includes management options for commercial and home use. In all cases, follow the instructions on the pesticide label. The PNW Insect Management Handbook has no legal status, whe ...
Hosts and Pests of Landscape Plants Mike Bush and Sharon Collman Latest revision: March 2024 ...
Horticultural, Landscape, and Ornamental Crops ...
Alder (Alnus)-Leafminer European alder leafminer (Fenusa dohrnii) Pest description and damage The adult insect is a black sawfly about 0.25 inch long. The larvae are small, and light colored. The larvae feed between epidermal layers, creating large dark b ...
Fir (Abies)-Bow-legged fir aphid Cinara curvipes Pest description and damage This large, brownish-black aphid congregates in large colonies on branches (especially the undersides). Aphids dropping onto underlying foliage or decks look somewhat like spider ...
Nursery crop pests-Aphids Pest description and crop damage Aphids are small, soft-bodied insects with piercing-sucking mouthparts formed into a long needle-like stylet they hold under their body when not feeding. They are usually identified by host plant, ...
Nursery crop pests-Leafminer Pest description and crop damage There several different types of leafminers, including mines made by the larval stages of flies, moths, sawflies, and beetles. Damage from leafminer feeding occurs as the larvae feeds between t ...
Alder (Alnus)-Alder flea beetle Macrohaltica ambiens and others Pest description and crop damage Adults are dark shiny blue and about 0.25 inch long. Larvae are dull brown to black and about 0.25 inch long at maturity. They feed on and skeletonize foliage ...
