ホテイアオイ
California Department of Food and Agriculture (CDFA) crews which already manage other invasive aquatic plants including "Hydrilla verticillata" and "Eichhornia crassipes" have focused efforts upon "Limnobium laevigatum". The CDFA has carried out detection and mapping of spongeplant throughout California, with a focus upon irrigation canals in the San Joaquin valley. Treatments have included mechanical and hand removal and application of appropriate aquatic herbicides including diquat and glyphosate upon remaining plants.