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?
CDFA Rating: None?
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 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
Presentations are linked where available. Where a presentation is not available, find more information by reading the abstract in the Cal-IPC Symposia Archive.
- Weed alerts and other invasive plant highlights for 2020. Burger, Jutta; Price, Robert (2020)
- Does horse manure harbor invasive plants? Quinn, Lauren; Davis, Bonnie; Kolipinski, Mietek; Ghosh, Sibdas (2006)
- Exotics in the southern California vernal pool ecosystem. Bauder, Ellen T. (1996)
Other Lythrum hyssopifolium Information
- CalPhotos - Images of plants taken mostly in California.
- Calflora - Distribution map and records of this species in California.
- CalWeedMapper - Distribution map of this species in California with ability to determine regional priorities.
- EDDMapS - Distribution of this species in North America.
- Jepson Interchange - Information on this plant's taxonomy, biology, and distribution from UC Berkeley's Jepson Herbarium.
- USDA PLANTS Database - Information on identification and distribution, with links to websites in individual states.