Arugula, also known as rocket, was first grown and used as a medicinal herb in ancient Roman times. It was also considered an aphrodisiac! Today this leafy green has become popular in many cuisines. Arugula is an edible herb in the brassica or mustard family along with cruciferous vegetables like broccoli, cauliflower, cabbage, and collard greens. The leaves are a deep green in color with deep notches up and down both sides. It is best to harvest them before they are full grown as they tend to get bitter as they mature. As a young plant, they have a light pepper taste that can enhance any meal. Another bonus, if you happen to grow it, the leaves, seed and flowers are all edible.