Watsonia meriana

Photo courtesy Mary Ittner and Bob Rutemolle

Synonyms: Watsonia bulbullifera Mathews & L. Bolus; Watsonia meriana (L.) Miller var. bulbullifera Mathews & L. Bolus; Watsonia bulbifera; Watsonia angusta auct. non Ker-Gawl.

Common names: bulbil watsonia; watsonia

Watsonia meriana (bulbil watsonia) is a perennial flowering herb (family Iridaceae) found in disturbed areas, coastal prairies and coniferous forests along the northern coast of California. This corm-forming, ornamental, South African native reproduces by growing bulblets. Bulbil watsonia, which is generally avoided by wildlife as a food source, forms dense patches that may crowd out other plants. Bulbil watsonia infestations tend to spread slowly on their own, but they may establish new populations by human movement of plant material and soil.

Cal-IPC Rating: Limited

Cal-IPC Assessment

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 Newsletter Articles

Cal-IPC Symposium Presentations

  • None for this species.

Other Watsonia meriana Information

  • 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.