| Joanie, You may wish to mention that “agricultural vinegar” is 20% acetic acid, and must be used with caution, while the normal household vinegar, which we all have in our kitchen cupboards, is only 5%. I’m not saying that the 5% does not work as what they call a “burn down” herbicide, just that there is a difference. The agricultural vinegar is general available at farm supply stores.
Don On May 7, 2019, at 9:07 AM, a*@rewrite.hort.net wrote:
Hi, Kitty:
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!
Joanie, Chicago
In a message dated 5/6/2019 8:17:21 PM Central Standard Time, 1*@rewrite.hort.net writes:
Well, I went back out and managed to pull most of it. Felt better abt it than chemicals. I’ll have to stay on top of it though. Thanks for listening to me. And the last item is Campanula Cherry Bells. It will definitely be gone by week’s end!
Kitty
From: o*@hort.net [o*@hort.net] On Behalf Of Nancy Robinson
Sent: Monday, May 06, 2019 8:09 PM
To: perennials@hort net
Subject: Re: weeding-roundup
If you do spray into a pot on stick so spray only goes where you want it.
On May 6, 2019, at 7:51 PM, Don Martinson <1*@rewrite.hort.net> wrote:
I had the same problem with a variegated Commelina, Kitty. I was warned that not all the seedlings would be variegated. But turns out it’s more like 10% and the rest are EVERYWHERE!
Don
On May 6, 2019, at 5:06 PM, Kitty Morrissy <1*@rewrite.hort.net> wrote:
Yes, I do some stupid things. A couple of years ago I was invited to a plant swap of people who know little more than the flower color of their plant. No name. It looked familiar but I couldn’t place it. Turned out to be a Commelina which spread like there was no tomorrow and seeded excessively. I have it more/less under control now by just pluck-pluck-plucking. I really should have known better.
Now it’s Persicaria Brushstrokes, Tovara. It seemed reasonably well behaved. A few volunteers here and there, but last fall it was all over the place and getting thick. I’ve pulled about half of it and these plants have really good roots. Awkward around the valuable plants I’m trying to protect. Now I’m at an area where I originally planted it and there is not much else there. Since there are so many tiny seedlings everywhere, I know I’ll be fighting it for years to come around the valuable plants. But here where there’s little else, do you think Roundup might be in order?
|
