Roche Bros. is teaming up with PureGenius Foods.

BostonGlobe1

PureGenius is a brand name for a company called CropOne Holdings, which has set up a “box farm” in a Millis warehouse. Inside the warehouse are 40-foot-long shipping containers that have been refurbished to grow hydroponic lettuce in all seasons, says Alexander Eriksen, CropOne’s chief commercial officer.