Green beans are a popular crop for both home gardeners and commercial growers. There are many names for green beans, including string beans, snap beans and haricot vert (as the French refer to them).
Nearly all green bean varieties fall into two main categories of either bush beans or pole beans. Pole beans are climbing plants that need to grow on some type of outside support, while bush beans are low growing and stand erect easily.
Some growers prefer bush beans because they are easier to plant and yield their crop all at once, while others like pole beans because they are easier to harvest and produce a steady stream of the crop throughout the growing season.
Green beans can also be yellow or purple. The taste and texture of these other colors is similar to that of the green varieties. In fact, when heat is applied to purple beans, they tend to turn green.