High school junior Jillian Bresina carefully pours white powder into a beaker, then mixes it, like some sort of chemistry experiment. But Jillian isn’t in science class. She’s in the Bloomer High School shop, where she’s taking a horticulture class. Bloomer High School in western Wisconsin is the proud owner of four Flex Farms. Flex Farms are fully self-contained hydroponic growing systems, also called towers, that allow for growing fresh, affordable produce year-round.