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I have about 20 arborvitae trees along my driveway and all are browning. I'm a new homeowner and do not know the trees' history. What sort of issue do the below pictures exhibit? Thanks.

I am in Long Island, NY. I am pretty sure the browning was already present when I moved in in March.

Browning arborvitae 1 Browning arborvitae 2

Update: 1.5 months after applying two rounds of Bayer mite treatment, here is the same set of trees:

Greening arborvitae 1 Greening arborvitae 2

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    I am in Long Island, NY. I am pretty sure the browning was already present when I moved in in March. We've had sufficient rain this month, though I don't think our sprinklers include this strip of trees. – Ken Feyl Jun 4 '17 at 3:38
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    You say winter burn -- can you rule out spider mites? – Ken Feyl Jun 4 '17 at 5:43
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    OK, I did the white paper test and, while I'm no expert, it does appear to be spider mites. I see the telltale tiny dots on the white paper, and I see webbing in the branches. Should I try to treat with Bayer? Do the trees look recoverable or are they already in a death spiral and will have to be replanted anyway? Thanks. – Ken Feyl Jun 6 '17 at 1:03

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