Hemlock: Coneworms categories: Conifers Hemlock Hemlock Insects Ornamentals revision date: 2023-01-31 12:00 Coneworm larvae on pinePhoto by: K. Grey Biology Coneworms attack trees by boring into green cones, shoot tips, stems, and trunks. They are particularly attracted to wound sites. Coneworm feeding results in the dieback of affected twigs. Injured twigs often can be distinguished […]
Hemlock: Hemlock scale categories: Conifers Hemlock Hemlock Insects Ornamentals revision date: 2024-04-08 11:46 Hemlock scalePhoto by: R. Van Denburgh Biology Hemlock scales feed on the needles of Eastern hemlock (Tsuga canadensis) and spruces (especially Colorado blue). Adult scales are round to oval, dark gray or black in color, and about 2 mm (1⁄10″) in diameter. […]
Hemlock: Hemlock woolly adelgid categories: Conifers Hemlock Hemlock Insects Ornamentals revision date: 2023-01-31 12:00 Hemlock woolly adelgidPhoto by: R.S. Byther Biology Hemlock adelgids are aphid-like insects. They appear as white, woolly tufts on the bark and needles. Trees with severe infestations may be stressed, predisposing them to other insect and disease problems. Needles drop prematurely, […]