Broccoli grows very well in a straw bale garden. You can fit about half a dozen broccoli or cauliflower plants per bale and get two crops per year. Each crop can be harvested twice. First, you can take the main head shown below, then you can take the additional smaller heads that grow from the stems around this center.
For more on straw bale gardening, please visit our straw bale gardening series.