killing thistle!

Asked August 15, 2020, 10:24 PM EDT

After spraying thistle with weed be gone; is it a good idea to cover with black visqueen?

Kodiak Island Borough Alaska

1 Response

No do not disturb the thistle after spraying. The herbicide needs to transport through the plants vascular tissue to kill the whole plant. In order for the herbicide to translocate the plant needs to be happily growing for up to a couple of weeks after spraying.