Apple scab is one of the most common apple and crabapple diseases that gardeners have to deal with. Apple scab is caused by the fungus Venturia inaequalis. It will attack any varieties of crabapple ...

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.

This has been one of the worst years for disease that I can remember as a gardener. Both here at the Garden and throughout the Chicago area, I have noticed many crabapples as well as serviceberries ...

There are hundreds of choices when picking a crabapple tree from the nursery, but a Purdue University expert says only a handful are resistant to a widespread fungus or other serious diseases. After ...

The best way to avoid flowering crabapple tree problems is to select a cultivar that is resistant to the common diseases. Many of the new cultivars are resistant to or tolerant to scab, fireblight and ...

Q. I know that flowering crabs are subject to injury from fire blight. My crab is resistant to apple scab disease, but it is looking pretty sick now having lost maybe 1/3rd of its leaves, so I am ...