True Fir: Balsam twig aphid categories: Conifers Ornamentals True Fir True Fir Insects revision date: 2023-04-04 12:00 Balsam twig aphidPhoto by: A.L. Antonelli Biology Balsam twig aphids feed on needles and buds of firs. Three distinct forms of the balsam twig aphid occur. Aphids may be (1) small and yellow-green, (2) large and bluish-gray, or […]
True Fir: Balsam woolly adelgid categories: Conifers Ornamentals True Fir True Fir Insects revision date: 2023-02-07 12:00 Balsam woolly adelgid damagePhoto by: R.S. Byther Biology The balsam woolly adelgid feeds on the stems of true firs. White or grayish cotton-like masses, inside which are the purplish-black insects, can be found on the twigs, branches, or […]
True Fir: Coneworms categories: Conifers Ornamentals True Fir True Fir Insects revision date: 2023-02-07 12:00 Coneworm larvae on pinePhoto by: K. Grey Biology Coneworms attack trees by boring into shoot tips or stems, especially around wounds, and feeding on the soft bark tissues. Tip dieback may result from coneworm feeding. They may also bore into […]
True Fir: Giant conifer aphids categories: Conifers Ornamentals True Fir True Fir Insects revision date: 2023-04-04 12:00 Giant conifer aphids on pinePhoto by: A.L. Antonelli Biology Giant conifer aphids are large (up to 1⁄5″) and dark brown to black in color. They overwinter as eggs on twigs or branches. Adults and nymphs begin feeding on […]
True Fir: Spruce budworm categories: Conifers Ornamentals True Fir True Fir Insects revision date: 2023-04-12 12:00 Caption: Spruce budwormPhoto by: T.J. Fitzgerald Biology These larvae feed on the buds and foliage and may tie shoot tips together with webbing to make a nest. They are typically green to brown in color with a darker head […]
True Fir: Spruce spider mite categories: Conifers Ornamentals True Fir True Fir Insects revision date: 2023-02-07 12:00 Spruce spider mite adultPhoto by: A.L. Antonelli Biology The presence of spruce spider mites is indicated by yellow or bronzish stippling beginning near the needle bases. Infestations usually begin on older needles of the lower branches and spread […]