Source: California Invasive Plant Council

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Iris pseudacorus (yellowflag iris)

Iris pseudacorus
Iris pseudacorus
Photo courtesy Joseph DiTomaso

Iris pseudacorus (yellowflag iris) (family Iridaceae) invades wetlands and meadows along coastal California and some inland counties. Iris pseudacorus is a fast-growing and rapidly-spreading invasive plant that can out-compete other wetland plants, forming almost impenetrable thickets, in much the same way as cattails do.

Cal-IPC Inventory rating: Limited

Cal-IPC Resources on Iris pseudacorus

Cal-IPC News Articles

  • Connick, S. and M. Gerel (2005). Don't sell a pest: A new partnership to prevent plant invasions through horticulture. Cal-IPC News. 13: 4-5,14.
  • Kelly, M. (1999). Roundup of Arundo projects reveals commitment, strategic weakness. CalEPPC News. 7: 4-9.

Cal-IPC Symposium Proceedings

  • Connick, S. and M. Gerel (2004). Partnering to prevent invasions of plants of horticultural origin. California Invasive Plant Council Symposium 2004. Ventura, CA.

Other Resources on Iris pseudacorus