If you spend enough time looking at and working with plants, you’ll inevitably come across galls. Galls are abnormal growths and can be caused by a variety of different organisms, including insects ...

Persisting in the winter months as ball-shaped shells on oak trees, galls, which are considered an eyesore by landscapers in the summer months, appear as a sort of curiosity in winter. What are these ...

Q: My red oak is about 10 years old. Some of the leaves are starting to look distressed, so I looked closely. I noticed small red ants climbing up and down the trunk, almost as if they are harvesting ...

Dear Reader: These are galls that have resulted from the stings of the tree tissue by a small wasp as she lays her eggs in the current season’s growth. Oaks are host plants to scores of different ...

Bulging horned oak galls can be seen on fallen limbs piled up on the street in the 6400 block of Loughborough Avenue in front of a dead oak tree in 2023. The golf ball-size growths on oak twigs are ...

University of Minnesota researchers detected the pathogen that causes sudden oak death in Minnesota for the first time. Sudden oak death is a tree disease that has devastated forests on ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. A previously unidentified species of invasive parasitic wasps is now ...

Researchers at the University of Minnesota found the “sudden oak death” pathogen at a Hennepin County nursery.