Do I trim off green bean's vine when it grows over 6 feet tall?

Yes, you can trim green bean vines if they grow over 6 feet tall to manage their height and encourage better air circulation and light penetration. Pruning also helps the plant focus its energy on producing beans rather than excessive vine growth. Just ensure you trim gently and avoid cutting too many leaves, as they are essential for photosynthesis. Regularly harvesting beans can also help control vine growth.