I have a 3-year old nectarine tree that looks very healthy in late spring and early summer. Last year it was full of fruit but later dropped every single fruit when they were still small. I suspect ...

Kenaf (Hibiscus cannabinus L.) is a malvaceous bast fibre crop and the most promising source of "tree-free" newsprint in the world. For the last few years a begomovirus associated leaf curl disease of ...

If you have a peach tree, this may not be your year for peach ice cream. After an especially wet spring, many trees are afflicted with peach leaf curl, a fungal disease. “It’s mostly a leaf disease, ...

Curling tomato leaves are definitely not something to ignore. Loads of lush foliage help your plant produce all the deliciously ripe tomatoes you've been patiently growing. But when you see leaves ...

Pennsylvania naturalists are keeping an eye on a disease that has been killing beech trees in the eastern U.S. for more than a decade, but has begun spreading more rapidly in the past three years.

Brown leaf: Dark bands may remain visible on affected leaves during winter. Photo courtesy of Ontario Ministry of Natural Resources Forestry. (L); Withered leaves: Thick bands of leaf tissue may turn ...

Curls can be cute on a person’s hair, on poodles, sheep, and, of course, on a pig’s tail. But they’re not so cute on trees or plants. 99.9% of us have seen leaf curl on citrus trees. Disturbing as ...

Fall in Michigan typically means pumpkin-spiced lattes and canopies of autumn leaves in warm hues of yellow and orange or fiery shades of crimson. But this year, some of those trees are under attack ...