Need Shiro and Methley Plum Disease Help
Hi Folks. I have 2 Methley and 1 Shiro plum trees that are about 4 years old. I have provided lots of TLC for them, including dormant spraying, mulching, giving them compost, etc. Last year I noticed there were splits in the bark on the Shiro with some sap running out. My local cooperative extension guy said this was nothing to worry about. But that doesn't feel right to me. This spring they all bloomed out beautifully. But now they are losing their leaves like crazy. The leaves turn brown, become dessicated and fall off. The shiro is particularly bad; it's lost more than half its leaves. I checked for insects but could find none. Could this be shothole or a virus? What is the protocol for treatment for each? I really hate to lose them all after all this time. By the way, none of the trees has born any fruit. We've had unseasonably cool springs so the bees aren't yet awake when the trees bloom. I appreciate any advice anybody has. Thanks!