Sunday, August 29, 2010

Will We Have Any Trees Left?

Wisconsin has been infested with the Emerald Ash Borer, and they have been found all around the state, including right here in Milwaukee County.

Now there is a threat to the oak trees as well:
The Wisconsin Department of Natural says a deadly tree disease has been discovered for the first time in Oneida County.

According to the DNR, a tree infected with oak wilt was discovered about four miles southeast of Eagle River and three miles west of the Chequamegon-Nicolet Forestin July.

Oak wilt causes red oaks, black oaks and northern pin oaks to die within two or three months.

The disease is caused by a fungus that plugs and kills the water conducting vessels in the outermost wood of the trees.

The disease has also been found in southeastern Langlade County and eastern Florence County.

The DNR discourages moving oak firewood from April through July to prevent the disease from spreading.


  1. I remember when I was a kid, the Dutch Elm disease went through and we lost about half of our trees on my parent's lot. It was traumatic for a 7 year old to lose those trees.
    But other trees came and took their place and so will there be replacements for the Oak trees if they die off.

  2. There are quite a few diseases and pests that threaten trees in Wisconsin. If you would like to find more information you can try your UW Extension office. You can also get information through The Learning Store of the UW Extension.