I have some persimmons that have what looks like a canker. This was on persimmons in the lower midwest. It came the season after some slight winter damage on younger and smaller branches due to a very cold freeze for these parts (about -15F). Is this serious? Is there anything I should do: just cut off the branches? Disinfect shears? Burn cuttings? Thanks for any advice.
I don’t know what that is ?
But I would guess some type of gall.
Many things can make galls , wasps , mites , etc.
I say this because of the fairly regular size ,shape.
Never saw or heard of this on persimmons.
Would not think canker ?
Maybe put some in a mason jar with a coffee filter for a lid , see if something hatches out ?