Peach Tree Gummies

Asked January 21, 2019, 2:18 PM EST

My one-year-old Oregon Curl Resistant peach tree is growing gummies on its branches randomly. Is this a bad thing? If it is, what can I do to stop it?

Multnomah County Oregon peach trees

1 Response

Thanks for your question. Your tree does, indeed, appear to have 'gummosis,' but that doesn't determine the cause, which can be either bacterial or fungal. I have been unable to talk to a faculty member, since it is a University holiday. I will get back to you with more information when I am able to do that. However, I suggest you apply a fungicide horticultural oil while the tree is still marginally dormant. (I can see some early budding, so you may have missed the time for using some of the oils recommended in the article (https://catalog.extension.oregonstate.edu/ec631) mentioned in this one: https://extension.oregonstate.edu/news/get-leg-fruit-tree-problems-dormant-oils

I will get back to you!