This is a picture of one of four Princeton Elms that I planted. The Princeton Elm is said to be highly resistant to Dutch Elm disease.
Can anyone tell me if this id Dutch Elm disease? 

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Comment by Lewis E. Ward on August 25, 2016 at 12:09pm

 I've never seen DED on young trees and Princeton is resistant. Since it's a young tree it's most likely drought stress.

 A sure sign of DED is a brown  cambium when you cut a twig.

http://www.na.fs.fed.us/spfo/pubs/howtos/ht_ded/ht_ded.htm#symptoms

Comment by Lewis E. Ward on August 25, 2016 at 12:15pm

Princeton does get Elm Yellows, but the brownng doesn't match the symptoms.

Here is a fine article on disease reistant elms. Personally  would never plant an elm not resistant to elm yellows or DED. There are some fine hybrid cultivars that grow fast and look much like the American elm. 

http://www.mortonarb.org/trees-plants/tree-plant-descriptions/elm-c...

Comment by Lewis E. Ward on August 25, 2016 at 12:27pm
Comment by Stephen Kutney on August 25, 2016 at 9:33pm

Lew,

Thanks for you comments and research. Those elms must have been under stress of some sort. They were newly planted and were being watered during the drought period this summer. Today both trees are doing very well.

Comment by Lewis E. Ward on August 25, 2016 at 9:51pm

Glad I could help. 

I saw that no one had answered.

The drought, heat and  windy conditions put many plansts under stress. 

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