Filbert: Bacterial blight categories: Filbert Filbert Diseases Tree Fruits revision date: 2022-12-05 12:00 Canker on twig caused by filbert bacterial blightPhoto by: Unknown Biology Bacterial blight of filbert may attack buds, leaves, twigs, branches, and the trunk. Infected buds may be killed before leafing out. Leaves initially develop pale green, water-soaked spots, which later turn […]
Filbert: Eastern filbert blight categories: Filbert Filbert Diseases Tree Fruits revision date: 2022-12-05 12:00 Eastern filbert blight pustules on twigPhoto by: R.S. Byther Biology Eastern filbert blight is a fungal disease found on both cultivated and wild filberts. The disease typically infects via wounds caused by mechanical or insect damage. Buds damaged by the filbert […]
Filbert: Powdery mildew categories: Filbert Filbert Diseases Tree Fruits revision date: 2022-12-05 12:00 Powdery mildew fungal structures on filbert leafPhoto by: R.S. Byther Biology Powdery mildew is a fungal disease found on leaves and succulent shoots of hazelnut. A characteristic powdery white growth occurs on the underside of leaves and sometimes also covers shoot tips. […]
Filbert: Apple mealybug categories: Filbert Filbert Insects Tree Fruits revision date: 2022-12-05 12:00 Apple mealybugs and nests on twigsPhoto by: E.H. Beers Biology Apple mealybugs are gray, flat, scale-like insects found on trees during winter and spring. They are typically found in cottony clusters on twigs and the underside of leaves, often on new growth. […]
Filbert: Brown marmorated stink bug categories: Filbert Filbert Insects Tree Fruits revision date: 2022-12-05 12:00 Brown marmorated stink bug adultPhoto by: M. Bush Biology The brown marmorated stink bug (BMSB) is an introduced pest species from Asia that is spreading quickly across the United States. Nymphs and adults feed on a wide variety of plant […]
Filbert: Filbert aphid categories: Filbert Filbert Insects Tree Fruits revision date: 2022-12-05 12:00 Aphid colony on leafPhoto by: A.L. Antonelli Biology Filbert aphids are small, yellowish-green, pear-shaped insects typically found on the leaves. Aphids are often found in colonies on the tender new growth. Heavy aphid feeding may result in stunting and distortion of leaves […]
Filbert: Filbert bud mite categories: Filbert Filbert Insects Tree Fruits revision date: 2022-12-05 12:00 Swollen filbert bud from mite feedingPhoto by: R.S. Byther Biology Filbert bud mites are tiny eriophyid mites which feed in the leaf and flower buds. The mites are yellowish and sausage-shaped and are difficult to see with the unaided eye. Mite […]
Filbert: Filbert leafroller categories: Filbert Filbert Insects Tree Fruits revision date: 2022-12-05 12:00 Filbert leafroller larva causing damage on leafPhoto by: K. Grey Biology The filbert leafroller is a greenish caterpillar with a light to dark brown head. The caterpillars are about 3⁄4″ long at maturity. They feed inside webbed or rolled leaves, typically near […]
Filbert: Filbertworm categories: Filbert Filbert Insects Tree Fruits revision date: 2023-01-09 12:00 Nut damaged by filbertworm larvaPhoto by: K. Grey Biology The filbertworm is the larval stage of a gray to reddish moth. The adult moth has copper- to gold-colored bands across the forewings and a wingspread of approximately 1⁄2″. The female moth lays eggs […]
Filbert: Lecanium scale categories: Filbert Filbert Insects Tree Fruits revision date: 2023-03-13 12:00 Lecanium scales on twigPhoto by: R.S. Byther Biology Lecanium scales are shiny brown insects found on twigs. Adults are 1/8″-1/4″ in diameter and roughly turtle-shaped. They may have light markings or appear somewhat waxy. Crawlers (immature scales) are flatter. Scales produce large […]