Vertical farming with 220 green onions on one aeroponic tower. Green onions belong to the allium vegetable family which also includes leeks, garlic, chives, and shallots. They are a cool-weather crop, allowing you to grow them in the Spring, Autumn, and Winter. #greenonions #springonions #scallions #verticalfarming #aeroponics #towergarden #farming #hydroponics