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Taxon  Report  
Lythrum hyssopifolia  L.
Hyssop loosestrife
Lythrum hyssopifolia is an annual or perennial herb that is not native to California.
Cal-IPC rating: limited
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Observation Search
(2035 records)
redone or more occurrences
within a 7.5-minute quadrangle

Bloom Period
Genus: Lythrum
Family: Lythraceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Wetlands: Occurs in wetlands

Communities: Yellow Pine Forest, Foothill Woodland, Chaparral, Valley Grassland, many plant communities

Name Status:
Accepted by JEF

Alternate Names:
CalfloraLythrum adsurgens
ICPNLythrum hyssopifolium
PLANTSLythrum hyssopifolium
Information about  Lythrum hyssopifolia from other sources

[Wikipedia] Europe native: Lythrum hyssopifolia (orth. var. L. hyssopifolium) is a species of flowering plant in the loosestrife family known by the common names hyssop loosestrife and grass-poly. It is native to Europe but it is known elsewhere, including parts of Australia and eastern and western North America, as an introduced species and sometimes a weed. (contributed by Mary Ann Machi)

[Cal-IPC] Invasiveness: Lythrum hyssopifolia (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. hyssopifolia often grows on exposed mud, tolerates some salinity, but is sensitive to heavy frost. Cal-IPC Rating: Moderate (contributed by Mary Ann Machi)

Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2023. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 12/05/2023).