| Toxicity | Toxic. Horses, cattle and humans. |
| Control | Biological, sheep and goat grazing and herbicide. Contact your County Weed District or local Applicator for more information. |
| Habitat | Rangelands, pastures, prairies, roadsides, streams, ditches and waste areas. |
| Root | Extensive root system, up to 30 feet deep. |
| Leaf Shape | Linear. |
| Lifespan | Perennial; two years or longer. |
| Priority 2B Weed | Abundant in Montana and widespread in many counties. |
| Similar Looking Plants | At early stages, yellow toadflax and cypress spurge. |
| Important Information | Seed capsules explode, shooting seeds to distances of 15 feet; seeds can remain viable for over 15 years. Plant is difficult to control with herbicide because of root depth. |
