? Mold on tree leaves, leaves dropping - Ask Extension
This tree was likely planted when the house was built 70 years ago. It is roughly 6 ft taller than the roof of my the rambler home. I don't know the...
Knowledgebase
? Mold on tree leaves, leaves dropping #877591
Asked July 17, 2024, 10:26 AM EDT
This tree was likely planted when the house was built 70 years ago. It is roughly 6 ft taller than the roof of my the rambler home. I don't know the name of the tree, but it flowers beautifully for approx 1 week in the spring.
It has brown spots on leaves and the leaves are drying out and falling.
1. is this serious or not?
2. What action should I take?
Thank you.
Hennepin County Minnesota
Expert Response
It looks like apple scab on a crab apple. Compare here:
https://extension.umn.edu/plant-diseases/apple-scab
The most effective treatment is planting resistant varieties. But this year even resistant varieties are getting scab. The reference above gives prevention techniques. At this stage, no treatment is effective.
https://extension.umn.edu/plant-diseases/apple-scab
The most effective treatment is planting resistant varieties. But this year even resistant varieties are getting scab. The reference above gives prevention techniques. At this stage, no treatment is effective.
