Broccoli is rich in water-soluble nutrients, such as vitamin C, folate and other B vitamins. Broccoli, a plant related to cabbage, cauliflower and kale, has been cultivated for thousands of years.itamin C. A cup of raw chopped broccoli contains 81.2 milligrams of vitamin C, providing 100 percent of your recommended daily intake for that nutrient. Your body needs vitamin C to produce collagen in your bones, cartilage, muscle tissue and blood vessels.