What are dark green leaves?
Dark green leafy vegetables are great sources of nutrition. Salad greens, kale and spinach are rich in vitamins A, C, E and K, and broccoli, bok choy and mustard are also rich in many of the B-vitamins. The most nutritious salad greens are generally the darkest in color,” Kennedy says. The deep, vibrant color of spinach hints at its healthy nutritional profile, with 1 cup of raw spinach having 16 percent of your daily requirement of vitamin A, and all your daily vitamin K.