Vertical farming with Choy Sum on aeroponic towers. Choy Sum is also known as Chinese Flowering Cabbage. This leafy vegetable is a fast-growing vegetable that can be harvested in as little as 40 days after planting and it’s also a cool-season crop that grows best in temperatures between 50°F and 70°F (10°C and 21°C). #choysum #vegetables #brassica #verticalfarming #aeroponics #soilless #towergarden #farming #agriculture #hydroponics #farmtotable