[MAIPC] question about knotweed

[John Ambler]

I have dealt new colonization by Japanese knotweed found when pulling garlic mustard.  This is for a few stems, 1, 2, or a dozen.  I paint the stems with aquatic-labeled glyphosate concentrate when there is no rain in forecast for 2+ days.  Before it rains I cut the stalks, bag them, and send them to the county incinerator.  I have done this in the spring and summer with complete success for each treated stem and no damage to native plants.  

 

Large, old populations require other approaches, which I have not tried.  It is spread by broken stems carried by streams in floods, so if you cut it, be sure to remove all of it.

 

From: MAIPC [mailto:maipc-bounces at lists.maipc.org] On Behalf Of Karen Budd
Sent: Tuesday, April 21, 2015 6:03 PM
To: Celia V. Martin
Cc: maipc at lists.maipc.org
Subject: Re: [MAIPC] question about knotweed

 

Cut it in June, then go back and spray in late Aug./early Sept.

 

On Tue, Apr 21, 2015 at 9:24 AM, Celia V. Martin <celiavmartin at comcast.net> wrote:

If we cut the knotweed buds now, does it have any effect on the stalk’s growth?  What is the most efficient way to deal with it?

 

Thank you.

C

 

Celia V. Martin

301-325-5301

celiavmartin at comcast.net

 

AppleTree Institute awarded a US Dept of Ed Investing in Innovation ("i3") grant for Every Child Ready. Read more at: www.appletreeinstitute.org

 


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