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benleef 09-20-2012 08:38 AM

arborvitae issue
I have 8 "emerald green" arborvitae that I planted early summer. I watered them regularly with a soaker hose and during the hot weeks I would water directly on the rootball. They all seemed to be doing great.

This week, I watered them with the soaker hose for over an hour and then the next day we got a decent amount of rain and very heavy winds. I noticed the next day (can't be entirely sure they weren't like this before) that 3-4 of them have a golden-brown hue to the leaves. Otherwise, they still look healthy and alive, but the color is off. The remaining 4-5 are a deep green color.

Part of me suspects that perhaps they got a little over watered or maybe wind burn (the side toward the fence don't seem as bad as the front on some). But I want to make sure they will recover.

I can post pics later...but anyone have any ideas?

Thunder Chicken 09-20-2012 07:11 PM

Too much water. I'd lay off the watering for a while. If you are in frost country, I'd avoid watering them for the rest of the season so they can harden off.

benleef 09-20-2012 07:53 PM

Thanks. I also checked and found mites. I sprayed with a combination miticide. The non-brown ones I just sprayed with a jet of water. Not sure what I can do from here. Maybe treat again in 7 days according to product instructions...

Thanks for the advice on letting them harden off.

hardwareman 09-23-2012 03:21 PM

probably just a natural progression as arborvitae need to drop a substantial amount of their foliage during the fall months to make room for next years growth. But a picture would tell for sure.

benleef 09-24-2012 12:37 PM

1 Attachment(s)
Here is a picture comparing the color of my "healthy" arborvitae with the discolored arborvitae.

Thanks for any insight.

hardwareman 09-24-2012 08:22 PM

it looks like it is drying up

benleef 09-24-2012 10:18 PM

soil seems sufficiently moist.

chrisn 09-25-2012 03:38 AM

They got dry at some point and will get progressivly worse . Watering now might keep them alive but there will be a lot of die back. At least that is what it looks like to me. Is the fresh green one new?

benleef 09-25-2012 07:24 AM

Were the mites just coincidence? The green one was planted at same tune and watered same amount. What should I do?

chrisn 09-25-2012 05:18 PM

Where are you?

benleef 09-25-2012 05:40 PM

Long Island, NY

chrisn 09-26-2012 03:49 AM

If the mite spray says to spray again, do that and start up aain in the spring and see what they look like then. Some fertilizer would not hurt either.

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