Non-native plant species can pose a serious threat to many of our natural areas. Several exotic species are aggressive invaders that can take over large areas. The biggest problem species on the Nickel Preserve are sericea lespedeza, Johnsongrass, thistles, multiflora rose, privet, and Nepalese browntop. All of these species are especially problematic in disturbed areas, including recent restoration plantings.
 

Sericea lespedeza, an invasive plant from Asia, is our most serious threat to woodland, savanna, and prairies. It is becoming a major problem in pastures and along roadsides throughout Oklahoma. If left unchecked, it will spread and completely take over large areas to the exclusion of all other plants. Its early control along margins of forests and pastures will be important to preventing such an invasion. We use boom sprayers and ATV trailer-mounted sprayers to hit sericea with Remedy or Cimarron.

Nature picture credits: Photo © Chris Wilson/TNC (Sericea lespedeza)