Synonyms: L. adsurgens, L. hyssopifolia
Common names: hyssop loosestrife; grass poly; hyssop lythrum
Lythrum hyssopifolium (hyssop loosestrife) is a perennial forb/herb (family Lythraceae) that invades wetlands. It occurs in seasonal wetlands, ditches, and cultivated fields, especially rice fields. L. hyssopifolium often grows on exposed mud, tolerates some salinity, but is sensitive to heavy frost.Cal-IPC Rating: Moderate
Plant Assessment Form - Information gathered by Cal-IPC on the impacts, rate of spread, and distribution of invasive plants in California. Does not include management information.
Weed RIC Management Notes
- Management Notes - Information on management techniques and effectiveness from the University of California Cooperative Extension’s Weed Research & Information Center.
Cal-IPC Newsletter Articles
There are no newsletter articles associated with this species yet.
Cal-IPC Symposium Presentations
- Bauder, E. T. (1996). Exotics in the southern California bernal pool ecosystem. California Exotic Pest Plant Council Symposium '96. San Diego, CA.
- Quinn, L., B. Davis, et al. (2006). Does horse manure harbor invasive plants? Cal-IPC Symposium. Rohnert Park, CA.
Other Lythrum hyssopifolium Information
- CalPhotos - Images of plants taken mostly in California.
- Calflora - See the distribution of this species on Calflora's map of California.
- CalWeedMapper - Distribution information with ability to determine regional priorities.
- Jepson Online Interchange for California Flora - Information on taxonomy, biology, and distribution from UC Berkeley's Jepson Herbarium.
- CDFA - California official noxious weeds.
- USDA PLANTS Database - Federal database with information on identification and distribution, and links to websites in individual states.