Crocosmia x crocosmiiflora
Synonyms: derived from C. pottsii X C. aurea; Tritonia X crocosmiiflora
Common names: montbretia
Crocosmia x crocosmiiflora (crocosmia or montbretia) is a perennial (family Iridaceae) found along the coast of California and in the San Francsico Bay region. Crocosmia is a commonly cultivated ornamental plant, and is most commonly found near urban areas. It prefers disturbed areas, including roadsides, coastal scrub, prairie and forests. Crocosmia is a superior competitor for water, light and nutrients, and it excludes native plants by growing in dense patches. It reproduces using seeds and underground corms. Upon introduction to a new area, crocosmia spreads slowly at first, then more rapidly as the species becomes established.Cal-IPC Rating: Limited
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.
Cal-IPC Symposium Presentations
- None for this species.
Other Crocosmia x crocosmiiflora Information
- CalPhotos - Images of plants taken mostly in California.
- CalFlora - Distribution information based on submitted observations and herbarium specimens.
- 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.
- USDA PLANTS Database - Federal database with information on identification and distribution, and links to websites in individual states.