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Please visit this site for information on the Emerald Ash Borer
Oak Wilt Update
April 13, 2009
Status: HIGH RISK period
EXPECT NEXT UPDATE: JULY 6, 2009
FIELD NOTES: None
ADDITIONAL COMMENTS: Status based on estimated arrival or active dispersal of insect vectors in oak stands. Observed high and low temperatures and predicted temperatures are conducive for nitidulid beetle flight activity.
J. Juzwik
Northern Research Station, U.S. Forest Service
July Tree of the Month
Ginkgo Tree (Ginkgo biloba)
Also known as the Maidenhair tree, the commonly known Gingko tree is in a family of its own. It is can be called a living fossil, with recognizably related fossils being dated back as far as 270 million years ago. Two wild populations were said to exist in separate parts of China, though it is now believed that these populations were preserved by Chinese monks for over one thousand years.
Ginkgos are large trees that can reach over 100 feet in height, with some even reaching heights over 150 feet. While the branches tend to grow in a non uniform structure, the tree makes for a great yard or landscape tree. Additionally, it is very resistant to wind damage and snow damage.
Ginkgo trees are extremely resistant to pests and pathogens, as well as a variety of harsh conditions, ultimately making them perfect for urban environments. An extreme example of the tree’s hardiness is embodied in four trees in Hiroshima, Japan that were within 1-2 miles of the atomic bomb blast radius. Some are still living today.
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