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Fireweed
Chemical/Mechanical Control Section Project, FY 2006
Fireweed [Senecio madagascariensis Poiret]. Fireweed infestations on the Islands of Kauai and Oahu are contained. Personnel on both islands managed the sites and have no new plants since November 2005. Previously, this invasive weed had infested two acres on Kauai and about seven acres on Oahu. Increased communication between the Hawaii Department of Transportation (HDOT) and HDOA has resulted in a decline in the use of carpet grass seeds for HDOT roadside landscaping projects on Oahu. In previous years, fireweed emerged at several locations after carpet grass seeds, produced in Australia, were incorporated into hydromulch material to seed bare lands along roadways. Surveys were continued for the detection of new infestations of fireweed on Kauai, Oahu, Lanai, and Molokai.