Weeds - Rush Skeletonweed
Rush Skeletonweed is a perennial which flowers July through September. It can be identified by the yellow flowers, about 3/4-inch in diameter with seven to 15 petals and coarse downbent hairs on the lower 4 to 6 inches of the stem. The plant is 1 to 4 feet tall with almost no leaves.
An aggressive plant in both rangeland and cropland, particularly in light texture soils, extensive efforts have been made to eradicate Rush Skeletonweed, but new sites are being found each year in Eastern Oregon and Malheur County.
The plant can be controlled with high rates of picloram (Tordon 22K); followup treatment will be necessary for two or three years, and sometimes longer. Pulling the plant is not recommended, nor is cultivating through live roots. Small root segments can establish additional plants. Always read and follow the label on chemical treatments.
If you find a plant fitting this descriptions, mark the location and contact your State Agricultural Department, or County Weed Control Department before taking any steps to destroy the plant.