Plant Identification
Q.

What kind of tree is this and why is it wilty?

Zone Zone 4-5 | kgrunska53 added on July 30, 2018 | Answered

The edges of the leaves are turning brown and it looks like there are insect bites on them, some leaves are turning yellow and dropping. It’s also been extremely dry as windy here (western Colorado).

A.
A.Answers to this queston: Add Answer
drtreelove
Certified GKH Gardening Expert
Answered on August 1, 2018

It's hard to get a positive ID of the tree without flowers or seeds, but from the leaves it appears to be a poplar, like aspen or cottonwood.

Leaf margins turning brown, leaves yellowing and dropping, can surely be related to the extremely dry and windy conditions you describe = water deficit (drought stress). Give the tree an immediate deep watering and then once a week through the summer hot dry period.
Insect pest activity can be secondary to the drought stress. From the photo the feeding doesn't appear severe.

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