Hedge row with green giant arborvitae

[photoghog]

Hi All, new to the forum and hoping you can help. Last spring, I planned a hedge using 26 green giant arborvitaes in a zig zag pattern. The soil is well draining and I watered the trees 2 to 3x per week during the summer ( we had significant drought conditions). By fall, the trees all looked great and had grown aggressively. Yay! As we came out of winter and into spring, I noticed that several the trees had turned various shades of brown. On tree had a deer rub it, so I expected to lose it but the others I'm at a loss. Any insight? Are they to far gone or can they be saved?

I'm relatively new to this, so any troubleshooting steps would be appreciated.

 

[cpp gardener]

Any that are completely brown are dead. A half-strength dose of miracle-gro can get others going again. Did you have exceptionally cold temps this winter?

 

[photoghog]

Yes, we had a cold snap that hit -10 for a couple of nights. The rest of the winter was normal. I'm in northwest arkansas so lows average in the mid 20s.

 

[cpp gardener]

That’ll do it.

 

[photoghog]

I actually reached out to the extension office and they corrected me. It was - 18!!!