Problem with Arizona Ash

[user 192446]

Hi,

Last year I planted 5 Arizona Ash trees, about 10' tall. They are irrigated and mostly growing well. One in particular is having a problem and I'm not sure if it is a blight, pests, or soil?

I live in Northern Arizona at 5000' They are supposed to be a native tree and grow in this zone.

Several leaves are "half" brown, and the number is increasing steadily. We do have a problem with grub worms, and I've ordered some granules to treat for them.

See picture.

Any help appreciated. Thanks!

 

[Raintree]

I would guess leaf scorch by the looks of it. Limited root system unable to take up adequate water due to environmental conditions.

 

[user 192446]

I would guess leaf scorch by the looks of it. Limited root system unable to take up adequate water due to environmental conditions.

With four identical trees in the same lot??? Its the only one out of five with this issue. They were planted in Spring of '22 and came in 15 gal pots. I think they have plenty of roots and water.

EDIT: Most of the brown leaves are near the center of the tree also.

 

[Raintree]

Leaf scorch can be also caused by a restriction of the sap flow. Check for girdling.

 

[TheJollyLogger]

With four identical trees in the same lot??? Its the only one out of five with this issue. They were planted in Spring of '22 and came in 15 gal pots. I think they have plenty of roots and water.

EDIT: Most of the brown leaves are near the center of the tree also.

What are these identical trees you speak of? Who is cloning Arizona ash? Are they all planted in the same hole? Based on results, we have an anomaly... 3 are doing well and one is not.

But hey, as long as you have it figured out... personally, when Raintree talks, I listen...