GREAT FALLS — A noxious weed that can entangle swimmers, fish and boat propellers has been discovered for the first time at two separate locations of the Missouri River.
Montana Department of Agriculture weed coordinator Dave Burch says the Eurasian watermilfoil could spread if it isn’t quickly attacked.
He says the sites that have been found contain small infestations, but the weed has the potential to spread from the headwaters to North Dakota.
One option for control is herbicide. Another is to use divers to dredge the weeds.
Burch says control efforts will be started this fall.