Kinnikinnick: Leaf gall categories: Kinnikinnick Kinnikinnick Diseases Ornamentals Shrubs revision date: 2022-12-03 12:00 Kinnikinnick leafgallPhoto by: R.S. Byther Biology Leaf gall of kinnikinnick is caused by the same fungus which causes leaf and flower gall of azalea. Initially, infected plant parts show a thickening and then gradually become fleshy in appearance. Infected leaves and flowers […]
Kinnikinnick: Leaf spot categories: Kinnikinnick Kinnikinnick Diseases Ornamentals Shrubs revision date: 2022-12-03 12:00 Kinnikinnick leaf spotPhoto by: R.S. Byther Biology Leaf spot is a fungal disease. Symptoms include development of brown, necrotic spots on leaves. The fungus most likely overwinters on infected leaves and possibly on twigs. The disease is favored by cool, wet conditions […]
Kinnikinnick: Rust categories: Kinnikinnick Kinnikinnick Diseases Ornamentals Shrubs revision date: 2022-12-03 12:00 Rust pustules on underside of serviceberry leaf and on petiolePhoto by: R.S. Byther Biology Kinnikinnick rust is a fungal disease of the leaves which requires an alternate host (spruce) to complete its life cycle. Symptoms of rust on kinnikinnick are seen in late […]
Kinnikinnick: Aphid (Manzanita leafgall aphid) categories: Kinnikinnick Kinnikinnick Insects Ornamentals Shrubs revision date: 2023-04-04 12:00 Kinnikinnick leafgall aphidPhoto by: R.S. Byther Biology The manzanita leafgall aphid feeds on the leaves of kinnikinnick and other manzanita species (Arctostaphylos spp.). The aphids are grayish or greenish in color and prefer new growth. Aphid feeding causes the leaves […]