Site Help: Arborvitae Browning, 1 by zagcadet

zagcadet wrote:
My Emerald Green arborvitae that I planted this Spring is starting to brown out. The same thing happened to the previous Arb that I replaced because of the same reason. I treated both with a granular disulfoton 2% as suggested for sprider mites. That obviously didn't solve my problem. The pricture is of the older Arb that I replaced. Can someone advise as to what's causing the browning and what I can do to stop and prevent it? Thanks.