Q: Can you tell me what is wrong with my crab apple tree, and what I should do about it? The leaves started turning yellow earlier this summer and now there are hardly any leaves left. It looks awful.

Bright red crabapples growing in clusters surrounded by green leaves growing on branch of a crabapple tree - Helen Reid/Getty Images What's the difference between a crabapple tree and an apple tree?

DES MOINES, Iowa (AP) -- The crab apple trees are in full bloom in the arboretum at Des Moines Water Works. There are more than 300 varieties of crab apples and 1,200 crab apple trees at the Arie den ...