Features

RIVERSIDE — A giant cane, the largest member of the grass family, swallows up gallons of water, grows up to a foot a day and is stubbornly resisting efforts around California to control it. 

“It’s kind of unstoppable,” said Kyle Washburn, who was working with crews using tractors to cut through dense growth of the grass known as Arundo donax along the San Jacinto River in western Riverside County. 

So far, the oversized reed has taken over 20,000 acres of riverbed in three Southern California counties. The plant, which is not native to California, sends up new shoots when it is cut down. It also becomes a natural fire carrier when it dries out. 

“The only thing I can compare it to is cancer. It spreads so fast, and it won’t let anything else live in its midst,” said Kerwin Russell, an environmental horticulturist with the Riverside-Corona regional conservation district. 

The cane, with its firm, straight structure, was first mentioned in the Bible and Greek myths, and is considered the best material available for clarinets and other reed instruments. 

No one is sure when or how the plant first came to the United States, but Spanish settlers used it as building material for California missions. 

Since 1960, when the federal government started planting Arundo along riverbanks to control erosion, the cane has spread dramatically. It is now spotted as far north as Willamette, Ore., and as far east as New Orleans. 

“They had the right idea, but they put it near water,” Russell said. “It loves water, and it has no natural enemies here.” 

To control the cane, stalks must be bulldozed, then shredded and, finally, pesticides must be applied to keep the plant from coming back, Russell said.