RE: weeding-roundup
perennials@hort.net
  • Subject: RE: weeding-roundup
  • From: &* M* <1*@rewrite.hort.net>
  • Date: Tue, 7 May 2019 17:42:30 -0400
Thistle!!
Chris, when you said thistle will wilt and die - all the way? 

My neighbors were virtually cultivating the darned stuff which is #1 on the 
state's banned plants list. I offered to help but their reply was, "We're 
Vegans; we don't kill plants."  I had to send a letter to their landlord with 
a copy of the Extension's bulletin about it.  The law states that if they 
don't do something about the thistle, the township has to step in - and if 
the twp doesn't, they're in trouble.

"Any person owning or having charge over land, highway, or railroad 
right-of-way who allows detrimental plants to grow and mature is guilty of a 
Class C infraction (IC 15-16-8-12). A township trustee that fails to perform 
their duties required by this chapter is also guilty of a Class C infraction. 
A Class C infraction can have a maximum fine of $500, each day constituting a 
separate offense."

They had a team over to clean it up that weekend, but slowly it's coming 
back, popping up in my nursery area. I just keep plucking, but if it gets 
really bad again, I won't hesitate to threaten again.

Kitty

-----Original Message-----
From: owner-perennials@hort.net [o*@hort.net] On Behalf 
Of Christopher P. Lindsey
Sent: Tuesday, May 07, 2019 12:50 PM
To: perennials@hort.net
Subject: Re: weeding-roundup

Like Joanie, I've also used horticultural vinegar (although mine is 30%), but 
with mixed results.  Some plants like thistle will brown and die immediately, 
but others (like established bishop's gout) won't do anything.

It seems like new growth is the most vulnerable, so I've found that cutting 
it back and then attacking the resulting shoots gives me the most success.  
You have to keep at it with a few applications, but I've never been 
disciplined enough.

This is the one I bought:

   https://www.amazon.com/gp/product/B00VVMTM14/

I just put it in a spray bottle and mist the plants.  

Chris

> I've had excellent results spraying with 20% agricultural vinegar.
> You can get quite close to treasured plants if you use a shield of
> some sort and only spray on a calm day. It sometimes takes 2
> applications but it gets the deal done on knotweed, etc. It
> dissipates rapidly from the soil. If you can't find it locally,
> amazon has it. Good luck!

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