[MAIPC] Ailanthus and Basalbark Treatment

John Ambler john.ambler at verizon.net
Wed Aug 12 08:33:05 PDT 2015


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 
    
  
    
 RA Vision:
 Leading the model
 community where all can live, work, play, and get  involved. 
 RA
 Mission: To preserve and
 enhance the Reston Community through outstanding leadership,
  service, and stewardship of our resources. 
 RA Core
 Values:
 Service~Collaboration~Stewardship~Innovation~Leadership 
   
 NOTICE:
 The contents of this
 email and any attachments to it may contain privileged and  confidential information from the Reston Association. This  information is
  only for the viewing or use of the intended  recipient 
    
    
 
 
 
 -----Inline Attachment Follows-----
 
 _______________________________________________
 MAIPC mailing list
 MAIPC at lists.maipc.org
 http://lists.maipc.org/listinfo.cgi/maipc-maipc.org
 
_______________________________________________
MAIPC mailing list
MAIPC at lists.maipc.org
http://lists.maipc.org/listinfo.cgi/maipc-maipc.org



More information about the MAIPC mailing list