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 ...

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 ...

There have been reports that 2024 has been a bad year for apple scab in both fresh-eating apples and crab apples. Apple scab infections on fruit start off olive-green and turn into a rough, cork-like ...

Fruit trees will soon bud out. If a tree had a fungal leaf disease last season, and it resulted in severe and early leaf loss, spring is an important time to apply fungicides if that is the control ...

ST PAUL, Minn. — In your own yard or driving around looking at someone else's trees, you might have noticed that crabapples look terrible this year. Absolutely terrible. The culprit is a fungal ...

It might be easy to grow and care for an apple tree, but keeping it safe? Well, that is where the problems begin. There is no shortage of pests and diseases that affect it, and any one of them could ...

TRAVERSE CITY, Mich. (AP) — Scientists say the fungus that causes apple scab appears to be growing more resistant to pesticides that have kept it in check for decades. Apple scab forms ugly pockmarks ...

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 ...

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 ...

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.