When should I spray my purple-leaf plum tree for the mites and disease they seem to get every year? A: That is a problem-prone tree, in my opinion. The dark leaves are nice, but it usually ends up ...

Can you help me with two damson plum trees? I purchased these trees bare-root and planted them probably five years ago. They have flourished and now stand 8 to 10 feet tall. I have had them ...

Q: I have a wild plum tree that is about 3 years old. It is the kind that ripens late with real sour purple plums that make really good jelly. Its plums ripened but fell off and had little spots that ...

For the past two years, my plum tree has produced plenty of fruit, but they all drop off while still very small. What am I doing wrong? Do we have a plum tree? We thought this was a peach tree. It was ...

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 ...

Maeve asks: When is the recommended period of time to prune the vertical water sprouts out of my ornamental plum tree? Each year they grow several feet. Plum trees are recognized for their tendency to ...

Question: It’s October and the peach and plum trees have started to bloom. Should we do needed pruning now or wait until the normal time during winter? Answer: October flowering could mean an early ...

Japanese plum yew offers solutions to many landscape problems: deep shade, evergreen, groundcover, deer resistant, drought-resistant, takes pruning, needs little pruning, clay soils, heat-tolerant, ...