Up to 4 ft. tall, lacks hair (glabrous), waxy and branched near the top
Alternate and dense; lance-shaped to heart-shaped, 1-2.5 in. long, blue-green color, lack hair and waxy; bases clasp the stem; edges (margins) are smooth
Snapdragon-like; 1.5-2 in. long; yellow with an orange-bearded throat and a long spur; clustered along upper part of stem
Seed capsules round (less than 0.3 in. diameter) with two chambers, each containing many seeds
Creeping root system
Grows best in dry, well-drained soils; often infests rangelands, waste areas and roadsides; known to occur in Douglas, Elko, Lincoln, Storey, Washoe and White Pine counties
Perennial; reproduces by seed and roots
May be toxic to livestock if ingested in large quantities
Mechanical control (mowing, burning or tillage) is NOT effective
Several biological control agents are available
Apply chlorsulfuron, imazapic or picloram, through bloom or to fall rosettes; repeated applications of 2,4-D, dicamba or glyphosate to actively growing plants