Give invasive species the brush off

Several new informational signs at Lewis and Clark Caverns State Park are warning visitors about the dangers of invasive plants like spotted knapweed.

The signs inform guests that shoes can carry the seeds off invasive plants, and visitors are asked to remove or brush seeds and burrs off before entering and leaving the areas near the sign.

According to Assistant Park Manager Tom Forwood Jr., noxious weeds are a high level concern and at Lewis and Clark Caverns State Park they spend thousands of dollars and hundreds of employee and volunteer hours fighting weeds each year.

Forwood said they...