A Concord man has been charged with growing marijuana up and down Interstate 89.

Police suspected Frank Drake, 37, had numerous pot gardens along the side of highway, so they dropped some undercover troopers off early Wednesday when they got a tip that he would be tending his crop.

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Police say Drake was arrested around 1:40 a.m. Wednesday as he watered the plants. Troopers say he was carrying a .357 handgun at the time.

Investigators say they seized 44 high quality marijuana plants on the southbound side of the highway and 88 on the northbound side. Police estimated the street value at $132,000.