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Which Trees Hold Their Leaves (IL)

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From: Eileen McBride
City:
downers Grove, IL
Which trees in northern Illinois retain their leaves all winter. I know the bur oak does, but which other trees also hold leaves?

 
Extension Message
From: Jay Hayek
Extension Specialist, Forestry
Department of Natural Resources and Environmental Sciences
jhayek@illinois.edu
Greetings Eileen:

Many juvenile oak (Quercus) trees will retain their leaves during the dormant season -- this phenomenon is referred to as "marcescence."

However, oak is not alone with regard to this phenomenon: Witch-hazel, American beech. eastern hophornbeam / ironwood, and American hornbeam / musclewood.

More on marcescence:

http://northernwoodlands.org/articles/article/why-do-some-leaves-persist-on-beech-and-oak-trees-well-into-winter

 
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