Douglas Fir: Aphids categories: Conifers Douglas Fir Douglas Fir Insects Ornamentals last review date: 2025-12-03 10:06 Giant conifer aphids on pinePhoto by: A.L. Antonelli Biology The aphids that infest Douglas fir are quite large—up to 1⁄5″ long. They may range in color from gray to brownish to dark. The aphids establish large colonies on the […]
Douglas Fir: Coneworms categories: Conifers Douglas Fir Douglas Fir Insects Ornamentals last review date: 2025-08-13 08:31 Coneworm larvae on pinePhoto by: K. Grey Biology Coneworms attack Douglas fir by boring into shoot tips or stems, especially around wounds, and feeding on the soft bark tissues. The portion of the branch beyond the injured point may […]
Douglas Fir: Cooley spruce gall adelgid categories: Conifers Douglas Fir Douglas Fir Insects Ornamentals last review date: 2025-08-15 08:40 Douglas-fir Cooley spruce gall adelgidsPhoto by: A.L. Antonelli Biology This aphid-like insect feeds on newly growing needles. Adelgids appear as woolly or cottony tufts on the needles, with heavily infested trees appearing “frosted” or flocked. Small […]
Douglas Fir: Douglas fir needle midge categories: Conifers Douglas Fir Douglas Fir Insects Ornamentals last review date: 2025-08-15 08:41 Douglas-fir needle midgePhoto by: R.S. Byther Biology The tiny white larvae of the Douglas fir needle midge mine the inside of needles, which become yellowed and distorted. Infested needles often have a sharp bend at the […]
Douglas Fir: Douglas fir tussock moth categories: Conifers Douglas Fir Douglas Fir Insects Ornamentals last review date: 2025-08-15 08:42 Douglas-fir tussock mothPhoto by: R.D. Akre Biology Douglas fir tussock moth larvae start at branch tips at the top of the tree and work down, feeding mainly on the new foliage and causing severe defoliation. They […]
Douglas Fir: Douglas fir twig weevil categories: Conifers Douglas Fir Douglas Fir Insects Ornamentals last review date: 2025-08-15 08:43 Douglas-fir twig weevil on noble firPhoto by: Unknown Biology The Douglas fir twig weevil is a small, wingless, grayish-black beetle with white markings and sometimes pinkish spots. The adult lays eggs in twigs in the summer. […]
Douglas Fir: Sequoia pitch moth categories: Conifers Douglas Fir Douglas Fir Insects Ornamentals last review date: 2025-08-15 08:46 Sequoia pitch mothPhoto by: S.J. Collman Biology The larvae of the sequoia pitch moth feed by boring into branches or trunks. At the point where the larva enters the wood, small to large masses of white to […]
Douglas Fir: Silverspotted tiger moth categories: Conifers Douglas Fir Douglas Fir Insects Ornamentals last review date: 2025-08-15 08:54 Douglas-fir silverspotted tiger mothsPhoto by: A.L. Antonelli Biology The caterpillars of the silverspotted tiger moth feed on the needles, often “tenting” branches with dirty-looking webs. Feeding occurs through fall and winter, with webs becoming more noticeable by […]
Douglas Fir: Spruce spider mite categories: Conifers Douglas Fir Douglas Fir Insects Ornamentals last review date: 2025-12-03 10:06 Spruce spider mite adultPhoto by: A.L. Antonelli Biology The presence of spruce spider mites is indicated by yellow or bronze stippling beginning near the needle bases. Infestations usually begin on older needles of the lower branches and […]