Help. What's wrong with this baby?

[Dielle]

Wondering if anyone knows the exact name of these trees and why they are turning brown? I have three and they are all doing it.

 

[mrtree]

Drought I am guessing

 

[Dielle]

Drought I am guessing

It rained here the whole month of May. If anything I'm wondering if it can get too much water?

 

[mrtree]

Okay out with that idea. It is the older growth that is browning, so??? Do you happen to be in the southern hemisphere? Maybe a scale insect. I am just throwing out guesses now.

 

[Dielle]

I'm in Virginia. It seems to much to be older growth browning.

 

[JeffGu]

Arborvitae around here are prone to getting winter kill that looks like that, they're sensitive to overspray of herbicides like Roundup and the damage often looks like that, during wet years they are sometimes plagued with fungus and insect damage that also does that, as does root rot problems from standing water.

I think you'll need to get an arborist or someone from a nursery or agriculture extension office out to your house to look at it.

 

[Gorman]

You sure those aren't leylands?

 

[scott_baker]

Looks like Leyland cypress to me. They are prone to a canker and also susceptible to root disease. One of my least favorite tree species when planted here where I live in the PNW.

 

[Gorman]

Thank you Scott!!!

 

[Gorman]

Leylands are garbage trees. Just throw it through the chipper and plant some thuja plicatas or something.

 

[oldoakman]

The trees are Leyland Cypress and the are very susceptible to two different fungal diseases seridium canker and botsphaeria(sp) canker. Spraying is a waste of money. Carefully prune out the dead material and sterilize your tools between trees with denatured alcohol or a dilute bleach solution. Collect and destroy or dispose of the pruned material. Monitor moisture. Do NOT fertilize.