Boxwood: Boxwood leafminer categories: Boxwood Boxwood Insects Ornamentals Shrubs revision date: 2023-04-04 12:00 Boxwood leafminerPhoto by: A.L. Antonelli Biology Leafminers feed by removing green tissue from between the upper and lower leaf surfaces. Feeding by leafminers can be detected by the presence of yellow to brownish blotch-like mines or by a blistered, thickened appearance of […]
Boxwood: Boxwood mite categories: Boxwood Boxwood Insects Ornamentals Shrubs revision date: 2024-04-08 11:46 Spider mites under microscopePhoto by: L.K. Tanigoshi Biology Boxwood mites are small and greenish brown. Their presence is typically indicated by small white, yellow, or bronze streaks resembling fine scratches or speckles on the upper surface of leaves. The mites may be […]
Boxwood: Boxwood psyllid categories: Boxwood Boxwood Insects Ornamentals Shrubs revision date: 2023-04-04 12:00 Boxwood psyllidPhoto by: K. Grey Biology The presence of the boxwood psyllid is indicated by the cupping of leaves at the tips of terminals. The white immature psyllids (nymphs) feed on the developing buds and leaves at the tips of branches, causing […]
Boxwood: Box blight categories: Boxwood Boxwood Diseases Ornamentals Shrubs revision date: 2022-11-30 12:00 Box blight brown leaf spots and defoliationPhoto by: J. Glass Biology Box blight is a fungal disease that causes leaf spots, stem cankers or black streaks, and foliar blight, and defoliation. Symptoms of blight and defoliation can appear suddenly and affected plants […]
Boxwood: Canker categories: Boxwood Boxwood Diseases Ornamentals Shrubs revision date: 2022-11-30 12:00 Boxwood cankerPhoto by: R.S. Byther Biology Boxwood canker is caused by a fungus which often infects branches through pruning wounds or at branch crotches, where infected, dead leaves have accumulated. Leaves of affected branches often change color to light green, yellow, then tan. […]
Boxwood: Leaf spot categories: Boxwood Boxwood Diseases Ornamentals Shrubs revision date: 2022-11-30 12:00 Boxwood Pseudonectria leaf spotPhoto by: R.S. Byther Biology Boxwood leaf spot is caused by fungi which survive in fallen, diseased leaves beneath the plant. Leaves develop discolored spots and may turn tan or brown from the margins and tips inward. Small, black […]
Boxwood: Phytophthora root rot categories: Boxwood Boxwood Diseases Ornamentals Shrubs revision date: 2022-11-30 12:00 Phytophthora root rot infecting trunkPhoto by: C.R. Foss Biology Phytophthora is a fungal infection of the roots and crown. Infected plants often show wilting, discolored or dead leaves which remain on the branches, dead twigs and branches, stunting, gradual decline, and […]