James H. Miller & Ted Bodner, Southern Weed Science Society, Bugwood.org

What is Japanese Stiltgrass?

Japanese stiltgrass is also known as Mary's grass and resembles bamboo, though smaller in size. It grows along roadsides and other areas and is considered an aggressive, noxious, invasive weed. It has slender stalks with tiny flowers in the summer and dry fruits not long after. This weed spreads by seeds, which can remain viable for as many as three years in the soil.

How to Get Rid of Mary's Grass

A postemergent herbicide labeled for stiltgrass is highly recommended to prevent further spread of the weed. Pre-emergent herbicides are also recommended to prevent germination since this weed can quickly take hold and spread rapidly once it's established in an area. Mowing and pulling are not recommended.