Approx 5000 seeds. Broccoli raab is a fast growing leafy green with small tender heads in the turnip family typically ready to harvest in around 60 days. The plant is cultivated for its tender stalks, florets, and leaves, all of which can be eaten. The bitter, intense flavor is very popular in Italy and many parts of Asia. Many produce markets stock this green, and it can also be grown at home relatively easily. The plant is rich in calcium, potassium, iron, vitamin A, and vitamin C, making it an excellent inclusion in a balanced diet, along with other dark green leafy vegetables.