How Long To Tarp Mugwort

Question

I’m working n creating a Pollinator Meadow but am first trying to eradicate 3/4 acre of Mugwort. I have just put down 6mil black plastic sheeting over the entire site- for how long do you recommend I leave it down for to be sure the Mugwort is dead?

Answer 1

It works fastest during the hottest part of the year and takes loner when the weather is cooler. So it can take anywhere from six weeks to a few months.

In your case, check it in two months and every couple of weeks thereafter.

https://www.gardeningknowhow.com/plant-problems/weeds/getting-rid-of-mugwort.htm
https://www.gardeningknowhow.com/garden-how-to/projects/how-to-solarize-garden-beds-to-eliminate-garden-pests-in-the-soil.htm