We have a purple plum tree that has given us very tasty plums for a number of years. This year, however, its branches are burdened down with hundreds of plums that won't ripen. The plums are various ...

I’m concerned with my purple leaf plum tree. Originally, I was only concerned with the dark crusty limbs, and then I noticed some stuff like dark coffee grounds at the trunk. How bad is this? And how ...

Q. What is this stuff oozing out of the trunk of my plum tree? What should I do about it? (see photo) A. That is the classic symptom of damage from the lesser peach tree borer, being the sap coming ...

Winter is here and yet we’re still getting plenty of gardening questions to Ask an Expert, an online question-and-answer tool from Oregon State University’s Extension Service. OSU Extension faculty ...