Q: I have a white flowering crab that we’ve had for about 20 years. Can you tell me what could possibly be wrong that’s causing the leaf problems, and is there anything I can do? — Christine W. A: We ...

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.

Apple scab, caused by the fungal pathogen Venturia inaequalis, remains one of the most significant challenges to apple production globally. Intensive research has elucidated the complex interplay ...

CHASKA, Minn. — With all the wet weather we've had this growing season, lots of crabapples are looking bad. A big part of that is the fungal disease called apple scab, which impacts both leaves and ...

Purdue Landscape Report: Recently a homeowner in Hamilton County posted on the Indiana Native Plant Society Facebook page with concerns about aphids, mites, and apple scab in her maple and oak trees.