[MAIPC] Ailanthus and Basalbark Treatment

[Art Gover]

The rationale of the winter cut is to complete it before decay can begin in earnest in the following spring.  I’ve never studied it empirically, but observation suggests that significant decay and even fruiting bodies are present on ailanthus by end of first ’not-growing-anymore-season’.

Be well.

Art

Penn State Wildland Weed Management
116 ASI Building
University Park, PA  16802

(814) 863-9904
(814) 863-7043 FAX
http://plantscience.psu.edu/wildland

> On Aug 12, 2015, at 11:33, John Ambler <john.ambler at verizon.net> wrote:
> 
> Several years ago on the maipc listserve there was a comment that ailanthus becomes brittle when dead and dry, and then it can be dangerous to cut.  The recommendation was to cut it before then.  Does anyone have information on how soon it should be cut to prevent this?  One month? 
> 
> With adequate drill-and-fill treatment with glyphosate concentrate, there can be little regrowth from root suckers.  But around female trees the small trees are likely to be from seeds.  Adequate drill-and-fill treatment:  1 mL 40-50% glyphosate with or without surfactant per inch in diameter in the growing season, 2 mL per inch in diameter for very large trees and in the dormant season.  Drilling is easiest and deepest on the trunk & roots near the ground.  
> 
> -----Original Message-----
> From: MAIPC [mailto:maipc-bounces at lists.maipc.org] On Behalf Of Richard Gardner
> Sent: Wednesday, August 12, 2015 10:51 AM
> To: MAIPC; Patricia Greenberg
> Subject: Re: [MAIPC] Ailanthus and Basalbark Treatment
> 
> I prefer Drill and Fill instead because it uses less chemical, safer tools and less spillage.
> 
> With a cordless drill, drill a 3/8" hole 1" deep every 2" of girth at comfortable working height.  Spray in 50.2% glyphosate (purple cap Roundup) with a spray bottle.  Within 2 weeks the tree will be defoliating.  Check the tree after 6 weeks for green bark by scraping between the holes with a knife to make sure the tree is dead.  If not check it again in a few weeks.  I know that they are dead within 6 months, probably sooner.
> 
> Once you are sure the tree is dead, cut it down or it may break at the drill holes in a heavy wind.
> 
> One sure way of knowing the tree is dead or near dead is to look for white tubes of frass from holes in the bark made by the ambrosia beetle Euwallacea validus.
> 
>                                                                                                      Richard Gardner
> 
> 
> --------------------------------------------
> On Wed, 8/12/15, Patricia Greenberg <pgreenberg at reston.org> wrote:
> 
> Subject: [MAIPC] Ailanthus and Basalbark Treatment
> To: "MAIPC" <maipc at lists.maipc.org>
> Date: Wednesday, August 12, 2015, 10:30 AM
> 
> 
> 
> 
> 
> 
> 
> 
> 
> Hi Everyone, 
> 
> Tree of Heaven is a big
> problem in Reston. Due to the make-up of our open space, in  many areas surrounding recreational facilities and homeowner  property, we cannot leave dead looking standing trees for  months at a time. Residents complain
>  and it reduces the “curb appeal” that the  Association is trying to improve. 
> 
> 
> I would like your input on
> this matter. When applying Triclopyr in a basal bark  treatment, how long does the tree need to stay before we can  cut it down? (2 months? 6 months?)
> 
> 
> In certain cases, I think
> we’ll be forced to do a cut stump treatment instead.
> We typically use glyphosate at 20% on the stump. How  problematic is this method with Ailanthus? I know it can be  effective in killing the large tree but then
>  we have runners to manage.  
> 
> Thanks for sharing your
> thoughts,
> Patricia  
> 
> 
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> 
> Patricia Pearl
> Greenberg
> Environmental Resource
> Supervisor
> Reston
> Association
> 12250 Sunset Hils
> Rd
> Reston, VA
> 20190
> (703) 435-6552
> pgreenberg at reston.org
> 
> www.reston.org 
> 
> 
> 
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