주요 사실

• Harvested at the cotyledon or first true-leaf stage — typically 7–21 days from seed
• Nutrient density is 4–40× higher than the mature vegetable for many varieties
• Popular varieties: sunflower, pea shoots, radish, broccoli, basil, amaranth
• Can be grown without soil on coco coir, jute mats, or hemp growing pads
• Require minimal equipment: trays, a growing medium, and a light source
• Cut just above the growing medium at harvest — roots are discarded