I’m not sure what is causing this. I assume it is some kind of small bore. This is on a multi- graft apricot in its second leaf. It seems like every variety was attacked. I don’t expect fruit for a couple of years so I’m interested in a systemic that could keep the tree pest free. If a systemic isn’t appropriate what is the best course of action? I lost my 25 year old apricot to some sort of cambium eating bores and don’t want it to happen again.
