Western Red Cedars
I have 14 cedars that were planted just over 2 1/2 years ago and one is suffering severely from something. The leaves on top are greenish brown however, the bottom sides are dark green. I have 3 others that have some browning about a foot to a foot and a half down from the top. This problem seems to be moving from the top down. The rest of the cedars are fine at this time. I've looked for obvious signs that I've read about but I haven't seen any. There has been no change in the area of the trees since they were planted. Is it possible to save this tree and help the other 3 trees? Also, could you tell me if these are actually Western Red Cedars or what variety?
Multnomah County Oregon
Thank you for your response. I've discussed this with an arborist and he says the tree has spider mites. The other 3 have a similar look but only at the very top part. I understand that the mites have gone dormant for the winter however, I'd like to know your recommendations for dealing with this. As I stated before, the bottoms of the leaves are a dark green so I'm thinking I can get a handle on this and not lose my tree. Once again, all the other trees seem to be fine. I will keep in mind the OSU Master Gardeners site.