In this way, does Roundup kill snake grass?
After cutting, apply an herbicide directly to the cut snake grass. Brush the weed with glyphosate while being careful not to apply on other grasses or plants. It won't be gone the first year, but hopefully in subsequent years, you will find a yard free of this pesky plant.
Thereof, does vinegar kill horsetail?
There is evidence to say that vinegar does kill weeds permanently and can be really effective at keeping your flowers and displays weed-free. From thistle to horsetail, you can use malt, distilled, white vinegar and even apple cider to stop the spread of weeds in your garden.
Work carefully to avoid spreading the spores, and place all debris into a sealed plastic bag to dispose of it. Apply a herbicide containing glyphosate directly to the cut weeds. This typically kills only the top portion of the weed and regrowth will occur, so several applications will be necessary to kill the weed.