As you probably know, pulling mugwort is ineffective because new plants emerge from rhizome (root) fragments. Never till it. Mugwort is relatively tolerant of most herbicides, so you could try smothering it with black plastic, newspapers, and mulch to reduce its growth.
You could try a pesticide with glyphosate. We recommend that you consult a nursery or your local Cooperative Extension service for specific recommendations. Find the service nearest you here: /content/cooperative-extension-services
As you probably know, pulling mugwort is ineffective because new plants emerge from rhizome (root) fragments. Never till it. Mugwort is relatively tolerant of most herbicides, so you could try smothering it with black plastic, newspapers, and mulch to reduce its growth.
You could try a pesticide with glyphosate. We recommend that you consult a nursery or your local Cooperative Extension service for specific recommendations. Find the service nearest you here: /content/cooperative-extension-services