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Lapins cherry tree disease #752214
Asked May 26, 2021, 10:05 AM EDT
Oceana County Michigan
Expert Response
Tom, thanks for the question.
At first look this looks like black cherry aphid damage, but no signs of the insects. Cherry leaf curl is another possibility. Aphids can be sprayed off with water. Cherry leaf curl (also known as cherry witches broom) would require the infected branch to be removed. I am trying to get a better read on in from MSU and get back to you. check out the following links:
Tom, I apparently dropped off the part about the bumps. They are a natural part of the plant known as extrafloral nectaries. Ants are attracted to these.
Tom, is this problem limited to one tree? Have you recently used any herbicides (near or far) from this tree? Have you had any frost freeze events since as the buds were coming out?
On May 27, 2021, at 10:15, Ask Extension <<personal data hidden>> wrote:
Tom, I forwarded the additional information. They had suggested a frost freeze event.