Damage to Peach tree limbs

Just noticed these two areas on my multi-graft peach. They are about 4-5 feet off the ground. Tree is going on 5 years I suppose. Is this bug damage or something else? (San Jose CA)

San Jose,

It’s probably Leucostoma canker. It almost looks like there could be frass from something like lesser peach tree borer, but it’s my understanding those borers don’t exist in CA, so it’s probably just canker.


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Thanks. That does like like it. Looks like I should wait until after the rainy season to deal with it.

Leucostoma is difficult to heal, but vigorous growing trees can help keep it in check. You might consider keeping the tree well fertilized.

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