Spruce: Spruce spider mite Categories: Conifers Juniper Juniper Insects Ornamentals Last review date: 2025-07-31 02:11 Last edit date: Spruce spider mite damage Photo by: R. Maleike Biology The presence of spruce spider mites is indicated by yellow stippling near the needle bases, usually on the lower branches and spreading upwards as the mite population increases. […]
Juniper: Aphids Categories: Conifers Juniper Juniper Insects Ornamentals Last review date: 2026-06-14 10:14 Last edit date: Giant conifer aphids on pine Photo by: A.L. Antonelli Biology Aphids on junipers are typically fairly large (up to 1⁄5″ long) black insects with long legs. Aphid feeding weakens plants, causes foliage to turn brown, and may kill twigs […]
Juniper: Cypress tip moth Categories: Conifers Juniper Juniper Insects Ornamentals Last review date: 2026-08-28 02:06 Last edit date: Juniper cypress tip moth Photo by: R.S. Byther Biology The adult cypress tip moth (cypress tip miner) is a silver-tan moth approximately 1⁄4″ in length. The larvae are green, about 1⁄8″ long, and tunnel in the leaves […]
Juniper: Juniper scale Categories: Conifers Juniper Juniper Insects Ornamentals Last review date: 2026-06-14 10:56 Last edit date: Juniper scale Photo by: Unknown Biology The juniper scale is a small, round, white to gray scale with a yellow dot at the center. Leaves, twigs, branches, and cones may be attacked. Symptoms of scale feeding include loss […]
Juniper: Juniper tip midge Categories: Conifers Juniper Juniper Insects Ornamentals Last review date: 2026-06-15 01:41 Last edit date: Biology Juniper tip midge larvae feed in the tips of shoots, causing them to swell and form green galls. After the larvae have left, the galls turn brown (sometimes reddish) and the tips die back. Symptoms of […]
Juniper: Juniper webworm Categories: Conifers Juniper Juniper Insects Ornamentals Last review date: 2026-08-28 02:06 Last edit date: Juniper webworm damage Photo by: A.L. Antonelli Biology The adult juniper webworm is a copper-brown moth with white bands on the edges of the front wings. The moth is about 1⁄2″ across. The webworm caterpillars initially feed by […]
Juniper: Leafminers Categories: Conifers Juniper Juniper Insects Ornamentals Last review date: 2026-06-14 10:03 Last edit date: Juniper cypress tip moth Photo by: A.L. Antonelli Biology Various species of leafminers may occur on junipers. In general, the damage they produce is very similar to that of the cypress tip moth. Damage is typically limited to tips […]
Juniper: Spruce spider mite Categories: Conifers Juniper Juniper Insects Ornamentals Last review date: 2026-06-15 03:48 Last edit date: Spruce spider mite adult Photo by: A.L. Antonelli Biology Foliage of plants infested with spruce spider mites is often speckled, stippled, or bleached-looking. Severely damaged leaves or twigs may drop. Some species of spider mites produce fine […]
Juniper: Dieback Categories: Conifers Juniper Juniper Diseases Ornamentals Last review date: 2026-06-14 10:42 Last edit date: Shoot tip dieback on arborvitae Photo by: R.S. BytherPhoto by: R.S. Byther Biology dieback observed on juniper is often caused by cultural or environmental factors rather than pathogenic diseases or insect infestations. Extensive foliar dieback of juniper suggests that […]
Juniper: Magnesium deficiency Categories: Conifers Juniper Juniper Diseases Ornamentals Last review date: 2025-08-07 03:17 Last edit date: Biology Magnesium (Mg) deficiency is a result of improper nutrition. A juniper lacking sufficient magnesium develops yellowing or dead foliage in the center and grows slowly. Older tissues are affected first. Magnesium deficiency may resemble damage caused by […]