Stilt grass

Asked September 14, 2019, 10:20 AM EDT

Is it safe to use pre emergent crabgrass herbicide on liriope to control still grass

Baltimore County Maryland

1 Response

Check the label on the product you buy, but generally it should be fine. Liriope is not a grass and does not spread by seed usually. Pre-emergent herbicides prevent seeds from sprouting.

Stiltgrass seeds lie dormant over the winter and germinate in spring. Put down your pre-emergent herbicide in spring about a week before you would put it down for crabgrass.