Have you noticed colorful caterpillars on your wild cherry, apple or crabapple trees recently? There’s a name for them, apiculture instructor Jon Zawislak at the University of Arkansas System ...

My flowering crabapple has some funny-looking branches on it now. The branches have brown leaves that appear to have dried up at the ends and are not falling off the tree. What is happening and wha… ...

Q. I have a flowering crabapple tree that is losing leaves. All during the spring the tree flowered and was beautiful. Now, the leaves turn yellow then fall. I've watered and fed regularly with t ...

Then, I do it again when I move from one tree to the next. This is important because there is some fireblight bacterial disease in the oldest crabapple and an old apple tree. Since fireblight can be ...

Some bugs are OK, others are not, and the same goes for trees growing in the D.C. region. What should you be on the lookout for? During a walk-through at Patuxent River State Park, Davey Tree ...