We have mouse eared chickweed in our vegetable garden and have been...
We have mouse eared chickweed in our vegetable garden and have been unsuccessful in eliminating it. 3 years ago we used Gertens brand of round-up in the spring. 2 years ago we used round up in the spring. Last year we covered the entire garden with black plastic until late last fall. This spring it is rampant! Tilling it under only spreads it. What can we do?
Dakota County Minnesota
Some of these perennial weeds are tenacious and require more than one treatment of a broad-spectrum herbicide. Chickweed forms mats and grows by sending rhizomes out into the surrounding area. Even though it may be possible to eliminate the plants by hand-pulling, when the rhizomes break off they will start new plants. To make matters worse this weed produces hundreds of seeds that can persist in the soil for up to 7 years. A multi-pronged attack will work best with this green pest.
Here is a link that discusses this weed and the various way to control them:
I hope this is helpful. Please contact AaE again if you have further questions.