Galls on Forsythia caused by the bacteria Pseudomonas savastanoi. Originally diagnosed as a fungal organism called Phomopsis sp. The galls on the Forsythia stem are hard and nodular.
Page last modified 2/2/11
Photo: Rosetta, OSU
Photo: Rosetta, OSU
- Insects
- Mites
- Diseases
- Boxwood blight
- Brown Rot
- Deny Disease
- Downy mildew on impatiens
- Gymnosporangium rust on Quince
- Gymnosporangium rust on serviceberry
- Pacific Coast Pear Rust on mountain ash, Sorbus sp.
- Phytophthora ramorum
- Powdery mildew
- Ralstonia solanacearum
- Rhododendron bud and twig blight
- Smut on Trillium
- White rust on Aurinia saxatilis
- azalea leaf and flower gall
- bacterial blight
- fig mosaic virus
- forsythia stem gall
- oak leaf blister
- Weeds
- Vertebrates
- Slugs/Snails
- Abiotic
- Resources