At the southern crossing of Highway 27, there is a significant population of watercress (Nasturtium officinale), an aquatic plant native to Europe and Asia. Its origin in Clear Creek is thought to be from Chinese immigrants growing the plant in the creek many many years ago, as watercress is a common plant used for cooking in Asia dishes. Now considered an invasive aquatic plant in BC, work began in Clear Creek to remove the plant from the waterway.