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 ...

Q. The apples on our Prairie Magic tree have round black spots. At first I thought it was bruising from hail but it's also near the bottom of some fruit, where hail couldn't hit. What is this damage ...

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.

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.

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 ...

Symptoms: Indicators of sweet orange scab include pustules on leaves that initially look like water spots and scabs on young fruit that can spread and eventually crack. While the inside of the fruit ...