Q: I have a 3-year-old Burgundy plum tree. The leaves became yellow in March so I applied KeRex iron to the soil when I first noticed the problem. Now the new leaves do not show any yellow in them, ...

Q: We have several fruit trees in our backyard. One of them is a plum tree. For the first time, we have lots of plums on the tree. The problem is that the plums keep falling off as soon as they get ...

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 ...

Answer: This is a great question. The short answer is “when the trees are fully dormant,” so any time before they flower or leaf out in the spring. But I’d like to know more before giving a full ...