Eriogonum umbellatum var. cladophorum

Cladophorum Sulphur Flower is a rare variety of buckwheat native to Wyoming, making it a prized specimen for collectors of native plants and high-elevation rock garden enthusiasts. Plant in fast-draining, gravelly or sandy soil in a sunny spot and water sparingly, as it is adapted to the cold, dry conditions of the Rocky Mountain region. This slow-growing perennial is exceptionally low maintenance once established and produces cheerful yellow flower clusters that support native pollinators.