Stem
- Up to 4 ft. tall, lacks hair (glabrous), waxy and branched near the top
Leaves
- 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
Flower
- 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
Other
- Grows best in dry, well-drained soils; often infests rangelands, waste areas and roadsides; known to occur in Douglas, Elko, Lincoln, Nye and White Pine counties
- Perennial; reproduces by seed and roots
- May be toxic to livestock if ingested in large quantities
Control
- Mechanical control (mowing, burning or tillage) is NOT effective
- Several biological control agents are available
- Apply aminocyclopyrachlor, chlorsulfuron, imazapic or picloram pre-emergence through bloom or to fall rosettes; repeated applications of 2,4-D, dicamba or glyphosate to actively growing plants
Blecker, L., Creech, E., Dick, J., Gephart, S., Hefner, M., Kratsch, H., Moe, A., Schultz, B.
2020,
Nevada Noxious Weed Field Guide – Dalmatian toadflax,
Extension, University of Nevada, Reno, Field Guide
