Henbit and vinegar

ZoysiaSod(6a/6b St.Lou TranZone)November 29, 2011

Five-percent white distilled vinegar from the grocery store will kill henbit, a cool-season annual weed. But I think the vinegar needs to work in conjuction with some other factor to be effective against henbit. That factor might be warmer temps like 60 degrees plus maybe, or perhaps it's a lot of sunlight.

I've been able to kill tons of henbit in my *back*yard with a 5 percent white distilled vinegar spray, but when I sprayed henbit located in my *side* yard that gets much less sun and gets lotsa shade due to the house, the henbit would not die. I sprayed that henbit on the side of the house 2 or 3 times on 2 or 3 different days....sprayed it heavily. I really unloaded that vinegar into the henbit, but the henbit wouldn't die. It looked perfectly fine days later as if vinegar never touched it.

What gives? Does vinegar need to work in conjunction with *sunlight* to eliminate henbit? Or does the vinegar need warmer temps? I finally had to pull out the sideyard henbit to get rid of it.

Tons of henbit got wiped out in the backyard by using vinegar but the usually shaded sideyard henbit still looked strong and untouched. It laughed at vinegar.

I'm not sure what the X Factor is: sunlight or warmer temps.

Thank you for reporting this comment. Undo
ZoysiaSod(6a/6b St.Lou TranZone)

I think distilled vinegar must need sunlight in order to kill henbit. Warmer temperatures are not the key here, but the sunlight. I now remember spraying the shaded sideyard's henbit during warmer temperatures weeks ago, but the henbit survived fine in the shade of the house.

I sprayed some non-shaded henbit with vinegar a day or two ago, and today I've seen the henbit dying after exposure to today's sunlight. The past couple days have been cold with daytime temps between 40 and 55, but the henbit is still dying today. Sunlight seems to be necessary in order for henbit to die when exposed to vinegar. Sunlight is the X Factor.

The unsprayed henbit, by the way, still seems to be growing in these temps. Makes sense, I guess, since it's a cool-season weed.

    Bookmark   November 30, 2011 at 5:35PM
Sign Up to comment
More Discussions
Hickory Nut Tree
What is the best way to deal with Hickory nuts in my...
cdouglas10683
Shady lawn in winter - what seed is best?
Hi, I have a small garden in London, England. Because...
Blighty
Artificial Grass Maintenance?
I'm newbie in gardening. I want to know what kind of...
kevin497
hydroseeding this spring or wait til fall?
hello - my lawn took a major hit last year even after...
duk748
I need lawn renovation help in Zone 7/8
I want to renovate my 24,000 sq ft lawn. The problem...
tless195
© 2015 Houzz Inc. Houzz® The new way to design your home™