The first thing to consider is whether you are growing dwarf or bush beans, or a climbing or pole bean type.
Bush beans typically provide a harvest for a few weeks, while climbing beans take longer to come to harvest. However, when the green beans are picked regularly, they will typically yield over a much longer period.
Look for bright and crisp beans, about 3 inches long. Avoid soft, bruised, or severed beans.
Store in a plastic bag in refrigerator for 1 to 2 weeks.
Excellent source of fiber, vitamins B1 and B6, folate, magnesium, and potassium