Michigan Faces New Green Threat: Stiltgrass Invasion Spreading Fast

As if our lawns weren't already battling enough—dandelions here, crabgrass there, clover pretending it's grass, and burnweed sprouting up everywhere—now Michigan introduces a new invasive villain: stiltgrass.

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On paper, it sounds harmless. In reality, it's the houseguest that never leaves. Stiltgrass (officially called Microstegium vimineum, but let's not get fancy) is an invasive grass that spreads faster than workplace gossip. The U.S. Forestry Service says each plant pumps out 1,000 seeds. Deer won't touch it. Translation: Stiltgrass can take over a yard if left unchecked.

Where Stiltgrass Has Been Found in Michigan

The Michigan Invasive Species Program (MISP) conducted a survey and found stiltcross cropping up in Barry County, Kalamazoo County's Augusta Creek State Game Area, and Monroe County's Petersburg State Game Area. But that isn't stiltgrass' first appearance in the Mitten State.

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It first made its presence known in Washtenaw County in 2017, and it's been slowly spreading ever since, hitching rides on boots, bike tires, and even your dog's fur.

How Stiltgrass Spreads: Your Yard Might Be a Prime Target

Why should you care? Once stiltgrass moves in, it smothers native plants, takes over forest edges, and basically tells your well-manicured lawn to pack its bags. It thrives in 'disturbed soils', meaning trails, ditches, and yes—your front yard—are all fair game.

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Identifying Stiltgrass: What to Look For

Sadly, there is no super-reformulated 'Weed-B-Gone' coming to save us—yet. Your best defense right now is spotting it early. Look for long, narrow leaves with a shiny silver stripe running down the middle. The roots are shallow, so you can yank it out by hand. If you do see it, report it to MISIN.msu.edu so the experts can keep an eye on it.

Godspeed and good luck with the dandelions—and crabgrass, clover, and now stiltgrass.