By Elly Voigt, DNR Forest Health Lab Technician and Communications Specialist, Eleanor.Voigt@wisconsin.gov
Galls are woody swellings on the branches or trunk of a tree and can be caused by insects or fungi. Winter and early spring are the best times to notice galls thanks to bare branches. One type of gall, caused by Phomopsis fungi, occurs on northern red oak, hickory, maple and several other tree species.
Phomopsis galls on the branches of an oak.
There will frequently be many phomopsis galls on one tree while nearby trees are completely unaffected, probably due to individual resistance differences. While small phomopsis galls have minimal effects on trees, larger galls can girdle branches, causing branch dieback. Galls grow very slowly, and many heavily affected trees survive for decades, even with a large gall on their trunk.
There are currently no treatment recommendations for Phomopsis galls, but you can prune and dispose of affected branches. Many landowners choose to let them be.
As the year draws to a close, we asked DNR urban forestry staff to reflect on the last twelve months and choose their top highlight – whether it’s a project they’re especially proud of, a new partnership or a deeper relationship with coworkers. Here are their responses:
The Wisconsin Annual Urban Forestry Conference will be held as a virtual event in 2021, with sessions on Feb. 21, 22 and 23.
The COVID-19 pandemic is taking a serious toll on our mental health. Many of us are feeling lonely and isolated due to social distancing. Some of us have lost our jobs, some have lost access to schooling and some have lost beloved friends and family members.
Fisher, fox, bobcat and bear are just a few of the species captured among the 50 million trail camera photos produced by Snapshot Wisconsin. The Wisconsin DNR program is a wildlife monitoring effort that gets the public involved in science, and the data generated help the DNR make wildlife management decisions. Volunteers host a network of trail cameras across the state that take “snapshots” of animals as they pass by. The program began as a pilot in two counties and launched statewide in 2018. Today the program boasts 1,800 volunteers hosting over 2,100 trail cameras. Information about what is in the photos, combined with where and when they were taken, is already being used to better understand important Wisconsin wildlife species, like white-tailed deer.
Act fast to keep your Tree City, Bird City, and Bee City status! Due dates are as follows: