A Technical Report from The Bartlett Tree Research Laboratories 104
There are two fungal organisms, Microsphaera pulchra and Phyllactinia guttata, which cause powdery mildew on dogwoods. This disease has now become quite common in the landscape and in nature.
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- Our mountain ash tree has white spots on it and the leaves are falling off. Can you help?
- Can you treat powdery mildew on two young dogwoods? I have read that they can be sprayed and will need repeated treatments.
- My jatropa tree has rust and sticky white stuff attached to the leaves and branches. Also, the blooms and leaves are shriveled. What can I do to save this tree?