Wyatt Williams

Wyatt Willliams, interpretive naturalist at Spring Mill State Park, kneels down in a patch of invasive periwinkle. He says it was planted there as a ground cover. (Rebecca Thiele/IPB News)
Rebecca Thiele

It’s safe to say invasive plants don’t care about property lines. That's where CISMAs come in — Cooperative Invasive Species Management Areas. There are 10 in the state right now and seven more in the works.