Ключевые слова: agriculture, background, butter, butter head, butter lettuce, butterhead, butterlettuce, crisp, diet, farm, food, fresh, freshness, garden, gardening, green, harvest, head, health, healthy, hydroponic, hydroponics, ingredient, leaf, leaves, lettuce, natural, nature, nutrition, organic, plant, produce, raw, salad, summer, vegetable, vegetarian, vitamin, wet,