Lobularia maritima

Lobularia maritima_Sweet_alyssum_by Pharoah Hound
Photo by Pharoah Hound, via Wikimedia Commons

Synonyms: Alyssum maritimum, A. odoratum, Clypeola maritima, Koniga m.

Common names: sweet alyssum; sweet alison; seaside alyssum; seaside lobularia

Lobularia maritima (sweet alyssum) is a perennial (family Brassicaceae) found along the coast of California and in the San Francisco Bay area. Sweet alyssum is a common ornamental plant that has escaped cultivation and invaded disturbed coastal dunes, scrub, bluffs, prairies and riparian areas. It has a long flowering season, and appears to have the ability to rapidly colonize suitable habitats. This Mediterranean native may crowd out native plants in some habitats.

Rating: Limited

Cal-IPC Resources

  • 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.
  • CalWeedMapper - Statewide maps, climate models, and reports.
  • Cal-IPC News - Our quarterly newsletter. Each issue is available as a pdf.
  • Cal-IPC Symposium Proceedings - Presentations and papers from our annual Symposium.
  • Don't Plant a Pest! - Select your region to find non-invasive alternatives to ornamental species. Also see our statewide brochure on trees.

    Other Resources

    • USDA PLANTS database -
      Federal database with information on identification and distribution, and links to websites in individual states.
    • Jepson Online Interchange for California Flora - Information on taxonomy, biology, and distribution from the UC Berkeley Jepson Herbarium.
    • CalFlora - Distribution information by county based on submitted observations and herbarium specimens.
    • CalPhotos - Images of plants taken mostly in California.

    Symposium Presentations

    • None for this species.

    Cal-IPC News Articles

    • None for this species.