Please help ID Maple Tree Problem

mountainman · 6th October 2009, 12:26 PM

One of my maples has experienced partial leaf drop. I live in eastern PA and we had a very wet summer but only one tree shows these symptoms. I noticed the problem in July. I also noticed black spots on some of the limbs. The tree does appear to have next year's buds and the branches do not seem dead...at least they are still flexible when bent. I am worried that it may be verticillium wilt...please tell me it's not. Pics attached...I hope. Thank you in advance.

pawjordan · 7th October 2009, 10:02 AM

Mountainman
Where in PA?
The green stuff on the bark is lichen: an indication of clean air.
I don't know about the black dots on the bark.
I would try and send a sample to Penn States plant diagnostic lab.
Plant Disease Clinic
Department of Plant Pathology
The Pennsylvania State University
220 Buckhout Laboratory
University Park,PA 16802
web site:
http://www.ppath.cas.psu.edu/Plant_Disease_Clinic_htm

mountainman · 7th October 2009, 10:54 AM

I am in northern Berks County, just south of Schuylkill county.

R.Boreal · 9th May 2010, 01:04 AM

Thanks. This site, once again, provides answers. The lichens are all over, but now I know they are not a concern. Here is an image of them covering a part of one of my (red?) maples. Also, a link to the US Nat'l Forest Service in a different TW forum post about lichens can be found using the search tool. Lots of pics and info there.

Quote:

Originally Posted by pawjordan

Mountainman
Where in PA?
The green stuff on the bark is lichen: an indication of clean air.
I don't know about the black dots on the bark.
I would try and send a sample to Penn States plant diagnostic lab.
Plant Disease Clinic
Department of Plant Pathology
The Pennsylvania State University
220 Buckhout Laboratory
University Park,PA 16802
web site:
http://www.ppath.cas.psu.edu/Plant_Disease_Clinic_htm

6th October 2009, 12:26 PM	#1
mountainman I'm new here so be nice Join Date: Oct 2009 Location: pennsylvania Posts: 2	Please help ID Maple Tree Problem One of my maples has experienced partial leaf drop. I live in eastern PA and we had a very wet summer but only one tree shows these symptoms. I noticed the problem in July. I also noticed black spots on some of the limbs. The tree does appear to have next year's buds and the branches do not seem dead...at least they are still flexible when bent. I am worried that it may be verticillium wilt...please tell me it's not. Pics attached...I hope. Thank you in advance. Attached Thumbnails Last edited by Therrin; 6th October 2009 at 06:56 PM.

7th October 2009, 10:02 AM	#2
pawjordan Sappling Join Date: Apr 2008 Location: usa Posts: 36	Re: Please help ID Maple Tree Problem Mountainman Where in PA? The green stuff on the bark is lichen: an indication of clean air. I don't know about the black dots on the bark. I would try and send a sample to Penn States plant diagnostic lab. Plant Disease Clinic Department of Plant Pathology The Pennsylvania State University 220 Buckhout Laboratory University Park,PA 16802 web site: http://www.ppath.cas.psu.edu/Plant_Disease_Clinic_htm

7th October 2009, 10:54 AM	#3
mountainman I'm new here so be nice Join Date: Oct 2009 Location: pennsylvania Posts: 2	Re: Please help ID Maple Tree Problem I am in northern Berks County, just south of Schuylkill county.

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