Stiltgrass

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Stiltgrass, Microstegium vimineum, is an invasive, warm-season annual grass. It can be found in shady, moist environments, such as the understory of forests and along waterways, but can also establish in sunnier and drier areas. This grass has a long period of development – it starts to grow in early spring, but waits until late summer or early fall to flower. 

Identifying characteristics

Stiltgrass is a weak stemmed grass with short, broad leaves that taper at their base and tip. The leaves have a silvery midrib that is slightly off center and hairs near the leaf base. Stiltgrass is often described as looking like a miniature bamboo. In the winter, the foliage turns a straw color.

Stiltgrass has a weak root system, and a few of the roots arise from higher up on the stem, giving the grass its name.

Its flower are discreet and easy to miss. It produces a raceme inflorescence with fingerlike collections of spikelets.

Management

Get the latest management recommendations for Stiltgrass on the invasive species profile page for this grass. 

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infestation of stiltgrass
Stiltgrass leaves are short and broad, with an off-center, silvery midrib.
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hand holding stiltgrass
Sometimes you can find a few long hairs at the base of the leaf blades of Stiltgrass.
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hand holding inflorescence of stiltgrass
Stiltgrass blooms in late summer to early fall, producing a raceme inflorescence, with finger-like collections of spikelets.