Japanese stilt grass

Asked September 23, 2020, 3:11 PM EDT

I have used my weed eater to cut down stilt grass on property next to mine to keep seed heads from forming, Will freezing weather grass kill the grass?

Allegany County Maryland

1 Response

Yes, the cold weather will kill the Japanese stiltgrass plants, but it will not kill seeds that are left in the soil. Seeds from Japanese stiltgrass can remain viable in the soil for about five years, so you will need to continue with the late-season cutting or mowing of the grass annually to prevent new seed dispersal. In time, and with this effort over several years, the "seed bank" in the soil can become depleted. http://mdinvasives.org/iotm/sept-2003/