Is this going to kill my Autumn Purple Ash Tree?

mremail1964 · 26th May 2009, 10:03 AM

I usually get a few leaves a year and then it goes away but this season the tree is infested. Any ideas on what it is, what is causing it and is there a cure?

pcarborist · 26th May 2009, 01:21 PM

leaf gall.

mremail1964 · 27th May 2009, 01:46 PM

What causes it and is there something I can do to prevent it?

TreeSpecialist · 29th May 2009, 03:57 AM

Phylloxera leaf galls are really more of a cosmetic problem than anything. The leaves continue to function normally as though nothing has happened if there are only a gall or two per leaf.

Injectible chemicals in the early spring would "control it" but why bother.

Prompt disposal of the leaves as they come down in the fall will minimize subsequent infestations.

And then again, some years you may not see a single gall.

mremail1964 · 29th May 2009, 04:06 AM

Thanks for your help!

26th May 2009, 10:03 AM	#1
mremail1964 Sappling Join Date: May 2009 Location: New Jersey Posts: 6	Is this going to kill my Autumn Purple Ash Tree? I usually get a few leaves a year and then it goes away but this season the tree is infested. Any ideas on what it is, what is causing it and is there a cure? Attached Thumbnails Last edited by Jeff Darby; 26th May 2009 at 11:02 AM. Reason: resize & embed pictures

26th May 2009, 01:21 PM	#2
pcarborist Semi-mature vigorous tree Join Date: Nov 2007 Location: PC Posts: 176	Re: Is this going to kill my Autumn Purple Ash Tree? leaf gall. __________________ parkcityarborist

27th May 2009, 01:46 PM	#3
mremail1964 Sappling Join Date: May 2009 Location: New Jersey Posts: 6	Re: Is this going to kill my Autumn Purple Ash Tree? What causes it and is there something I can do to prevent it?

29th May 2009, 03:57 AM	#4
TreeSpecialist Mature tree Join Date: Mar 2008 Location: Austin, Texas Posts: 373	Re: Is this going to kill my Autumn Purple Ash Tree? Phylloxera leaf galls are really more of a cosmetic problem than anything. The leaves continue to function normally as though nothing has happened if there are only a gall or two per leaf. Injectible chemicals in the early spring would "control it" but why bother. Prompt disposal of the leaves as they come down in the fall will minimize subsequent infestations. And then again, some years you may not see a single gall. __________________

29th May 2009, 04:06 AM	#5
mremail1964 Sappling Join Date: May 2009 Location: New Jersey Posts: 6	Re: Is this going to kill my Autumn Purple Ash Tree? Thanks for your help!

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