Local conservation organizations are teaming up to develop a Japanese Knotweed eradication plan on the Highlands plateau.

The Upper Cullasaja Watershed Association, Highlands Biological Station and the Land Stewards of the Highlands Plateau hope to stop the invasive plant choking out native species and ruining the ecosystem. The groups have garnered support from the Highlands Town Council, which endorsed the effort in December.

“Thanks to the sensitivity of the Town Council and UCWA to environmental issues, the Land Stewards are pleased to partner with them in an effort to preserve the beauty and biodiversity of the Highlands Plateau,” said Mercedes Heller with the Land Stewards of the Highlands Plateau, a conservation group comprised mostly of two local garden clubs dedicated to protecting native plant species.

The invasive Knotweed reproduces by long rhizomes that can reach 40 to 60 feet. These rhizomes are even able to penetrate asphalt paving and enable the plant to rapidly colonize disturbed soils.

“It spreads quickly to form dense thickets that exclude native vegetation and wildlife habitat. It is a threat to the natural ecosystem,” Heller said.

It has detrimental economic impacts as well. It hampers tourism by obstructing roadside vistas and making it difficult to access creeks and streams, Heller said. Property values are impacted for tracts that have been overrun by Knotweed at the expense of native plants.

A native of Asia, this species was introduced into the United States as an ornamental garden plant in the 19th century. Since that time it has invaded most parts of the country and is deemed a threat to the environment in over half of the contiguous states. Many areas have recognized the problems associated with the noxious weed and have established eradication programs.

“Thanks to the action of the Highlands Town Council, Highlands will be among those communities who strive to rid the environment of this invasive plant,” Heller said.