Source: California Invasive Plant Council


URL of this page: http://www.cal-ipc.org/ip/management/plant_profiles/Hydrilla_verticillata.php

Hydrilla verticillatas (hydrilla)

Hydrilla verticillata
Hydrilla verticillata
Photo courtesy California Department of Food and Agriculture

Hydrilla verticillata (hydrilla) is a perennial aquatic plant (family Hydrocharitaceae). It has been observed in the Mojave and Colorado deserts, south and central coasts, San Francisco Bay Area, and Central Valley. Currently, isolated infestations of hydrilla are found in Shasta, Yuba, Lake, Calaveras, Madera, Mariposa, and Imperial counties. Hydrilla forms large mats that fill the water column and can block or severely restrict water flow.

Cal-IPC Inventory rating: High

Cal-IPC Resources on Hydrilla verticillata

Cal-IPC News Articles

  • Blair, C. E. (2009). Invasive aquatic weeds: Implications for mosquito and vector management activities. Cal-IPC Symposium 2009. Visalia, CA, California Invasive Plant Council.
  • (1995). Biological control of invasive exotic pest plant species: A report on the importance of maintaining and enhancing our nation's biological control capabilities. CalEPPC News. 3: 6-10.
  • Pitcairn, M. (2000). All weeds that have approved biological control agents, accidental introductions and others. CalEPPC News. 8.

Cal-IPC Symposium Proceedings

  • DiTomaso, J. M. (1997). Risk analysis of various weed control methods. California Exotic Pest Plant Council Symposium '97. Concord, CA.
  • Leavitt, J. R. and C. Pirosko (2002). A brief overview of the California Dept. of Food and Agriculture’s A-rated noxious weed education and eradication program. California Exotic Pest Plant Council Symposium 2002. Sacramento, CA.
  • Maly, F. C. (2006). Hydrilla eradication efforts in the Chowchilla River and Eastman Reservoir in Central California: A success story. Cal-IPC Symposium. Rohnert Park, CA.
  • O'Connell, R. A. (1997). Hydrilla: A case study: The state of California's noxious weed eradication programs. California Exotic Pest Plant Council Symposium '97. Concord, CA.
  • O'Connell, R. A. (1999). The state of California's noxious weed eradication programs. California Exotic Pest Plant Council. Sacramento, CA.
  • Tu, M. and J. M. Randall (2003). 2003 Cal-IPC red alert! New invasions, recent expansions, and a few others to be on the look-out For. California Invasive Plant Council Symposium 2003. Kings Beach, CA.

Other Resources on Hydrilla verticillata