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Poplar (Populus)-Lettuce root aphid Pemphigus spp. See: Common Pests of Nursery Crops Pest description and crop damage Aphids cause flask-shape galls on leaf petioles. Galls are not hazardous to trees. Management-chemical control See: Chemical Control of ...

Poplar (Populus)-Oystershell scale Lepidosaphes ulmi See: Common Pests of Nursery Crops Poplar (Populus) Oystershell scale ...

Poplar (Populus)-Poplar-and-willow borer Cryptorhyncus lapathi Pest description and crop damage Larvae bore under bark and into wood. They weaken and break limbs. Scouting and thresholds Entry holes and borer damage greatly affect marketability; action th ...

Poplar (Populus)-Satin moth Leucoma salicis Pest description and crop damage Brownish caterpillars with white spots on back. Management-chemical control See: Chemical Control of Nursery Pests Spray in late summer when larvae are seen. For more information ...

Privet (Ligustrum)-Lilac leafminer Caloptilia syringella For more information See: Lilac (Syringa)-Lilac leafminer Privet (Ligustrum) Lilac leafminer ...

Privet (Ligustrum)-Thrips Caloptilia syringella Pest description and crop damage Slender and straw color. Cause leaf distortion. Management-chemical control See: Chemical Control of Nursery Pests For more information PNW Nursery IPM: Thrips (http://oregon ...

Rhododendron (Rhododendron)-Aphid Masonaphis spp. See: Common Pests of Nursery Crops Pest description and crop damage Green, soft-body insects. White, cast skins are conspicuous. Usually found only on new tender growth. Management-biological control See: ...

Rhododendron (Rhododendron)-Azalea bark scale Eriococcus azaleae See: Common Pests of Nursery Crops Pest description and crop damage White, cottony sacs enclosing small, reddish eggs. Management-chemical control See: Chemical Control of Nursery Pests For ...

Rhododendron (Rhododendron)-Carnation tortrix Cacaecimorpha pronubana See: Laurel, Portuguese (Prunus)-Carnation tortrix Rhododendron (Rhododendron) Carnation tortrix ...

Rhododendron (Rhododendron)-Lecanium scale Lecanium spp. See: Common Pests of Nursery Crops Rhododendron (Rhododendron) Lecanium scale ...