kale, leaf cabbage. curly green cabbage leaf in a white bowl

agriculture antioxidants background black botany bowl brassica cabbage closeup curly curlyleaf curlyleaved dark diet eating edible fiber foliage food fresh freshness gardening green greens growth harvest health healthy ingredient kale leaf leafy leaves life nourishment nutrition nutritious oleracea organic raw salad still superfood texture varieties vegan vegetable vegetables vegetarian vitamin white