A three-day blitz on illegal marijuana grows in Mendocino County's Round Valley area resulted in raids on 14 gardens and 42 arrests, law enforcement authorities said.

Federal, state and local agents involved in the pot eradication effort also seized 19,158 plants, about 2,300 pounds of processed marijuana, 19 firearms, and cash totaling $44,641, the Mendocino County Sheriff's Office said.

Detectives will continue to wrap up loose ends in the investigations - tracking down property ownership, financial gain and possibly making additional arrests, sheriff's Capt. Kurt Smallcomb said.

But "as far as the major operations go, we're pretty much done," Smallcomb said Friday.

Authorities say both local and out-of-state residents have converged on remote ranches in the area to profit from the high prices demanded for high-grade marijuana in what Smallcomb describes as the county's "green rush."