Stem
- Multiple stems up to 3 ft. tall; woody base; often branched near top; sometimes hairy
Leaves
- Alternate; strap-like (linear), 1-2.5 in. long, 0.1-0.2 in wide and lack hair (glabrous) to sparsely hairy; NO leaf stems (petioles); DO NOT clasp the stem; edges (margins) are smooth
Flower
- Snapdragon-like; 0.5-1.5 in. long, bright yellow to white with an orange bearded throat and a yellow spur; clustered along upper part of stem
- Seed capsules round with two chambers, 0.3-0.5 in. diameter, contain many seeds
Other
- Grows best in coarse soils; often infests rangelands, waste areas and roadsides; known to occur in Elko, and Storey counties
- Perennial; reproduces by seed and creeping roots
- Toxic to livestock if ingested in large quantities; historically used as a medicine, a dye and an ornamental
- Also known as “butter and eggs”
Control
- Mechanical control (mowing, burning or tillage) is NOT effective
- Several biological control agents are available
- Apply 2,4-D, aminocyclopyrachlor, chlorsulfuron, glyphosate, imazapyr, metsulfuron or picloram to actively growing plants; imazapic shortly after first killing frost
Blecker, L., Creech, E., Dick, J., Gephart, S., Hefner, M., Kratsch, H., Moe, A., Schultz, B.
2020,
Nevada Noxious Weed Field Guide – Yellow toadflax,
Extension, University of Nevada, Reno, Field Guide
