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View Full Version : Please Help Me Identify This Maple Tree Problem


mlongano
05-25-2007, 08:03 PM
Not sure if this is the right place for this, but I need some help here.

This is an October Glory Maple that was planted about three months ago. Until two weeks ago it appeared to be thriving. All of a sudden the tree has a wilted appearance (in spite of watering), and some spots and leaf damage as depicted in the pictures below. Does anyone know what this is and how to treat it.

Thanks in advance for your help.

http://i43.photobucket.com/albums/e396/mlongano/maple1.jpg

http://i43.photobucket.com/albums/e396/mlongano/maple2.jpg

http://i43.photobucket.com/albums/e396/mlongano/maple3.jpg

http://i43.photobucket.com/albums/e396/mlongano/maple4.jpg

http://i43.photobucket.com/albums/e396/mlongano/maple5.jpg

http://i43.photobucket.com/albums/e396/mlongano/maple6.jpg

americanlawn
05-25-2007, 09:30 PM
Antracnose. No need to spray. It will be fine. Check out land grant university info. We have the same tree here. No need to be concerned. You can spray Compass, Banner, etc, but anything that only affects the foliage is purely cosmetic. No need to worry cuz this disease will not harm the health of the tree.

americanlawn
05-25-2007, 09:31 PM
Anthracnose. Sorry for the misspelling, cuz I don't use spell check.

Runner
05-25-2007, 11:22 PM
Close, but it is not Anthracnose. Anthracnose has several dark spots that look like tar spots. This is leaf wilt due to stress. Do NOT fret over this. This is due to the sudden heat, and all sugar maples are doing it. The Crimsons however, are not. I have answered several customers and other peoples' requests for info on this. This is info that I received from an arborist some years ago. What is happening, is the leaf stems are VERY soft right now, and weaken as they flex in the wind (this softness is further caused by radiant heat). Feel the stems and push on them, and you will see just how soft they are and how they bow. When they do this, fibers break and the water cannot be transferred adequately throughout the leaf. as a result, they dry out, discolor on the edges, wilt, and fall...and MAN, are they falling right now!

mlongano
05-26-2007, 07:23 AM
Thanks guys...I guess I'll just keep an eye on it and see if anything else develops.

Mike

boats47
05-27-2007, 09:43 AM
Thanks runner, good to know

americanlawn
05-29-2007, 06:49 PM
mlongano - please look at pictures from land-grant universites to get a non-biased oppinion regarding "anthracnose"...this is what your tree has. Anthracnose "crosses the veins" unlike drought stress or tar spot. Tar spot shows up later as well. Your photos are classic anthracnose.

Runner
05-30-2007, 12:52 AM
In this case, it certainly cannot be ruled out, and MAY even be likely. After all, the conditions have certainly been right for this (Anthracnose).

americanlawn
05-30-2007, 06:48 PM
Hi Runner -- I sprayed a Sunset maple last week for anthracnose cuz the guy insisted on it. It was his pride & joy tree, and is the only tree that provides him shade for his deck at his mobile home. Today he signed up for lawn care too. TruGreen was charging him $59 each time to spray it (two times). It's only about 15 feet tall, and takes about 30 seconds to spray. Our price is $24 (one spray each spring). I gave him a fact sheet regarding anthracnose cuz nobody else ever did??? Now he trusts us very much. Also - he has a restraining order against TruGreen cuz he never wants them on his property again. He is one of several customers that have restraining orders with TruGreen. Take care dude - I hate Ohio State & respect Michigan. Hawkeye fan.