The Parts of a Flower Accent on Natural Landscaping Every night at sunset, plants fold their leaves and drop them down to conserve energy. Scientists call it nyctinasty basically a built in bedtime routine Does your garden sleep too? Drop Cabbage, broccoli, cauliflower, kale, and Brussels sprouts are all different types of vegetables, but they share a common ancestor. They all come from the same plant species known as Brassica oleracea. This 14 Plants That Grow in Water