For centuries, fava beans have been food staples across Asia, South America, North Africa, the Middle East and Europe. While less popular in North American due to a great variety of other legumes, fava beans are fairly simple to grow and harvest in any garden. They are tolerant of many climates and are one of the earliest seasonal vegetables that can be planted. In order to have a good harvest, you must have a good crop. Here are some steps to ensure you do.