Pole beans can be easily trained to grow on a trellis. Each plant has tendrils that will grab the trellis and hold on, keeping the plant growing upright. If it pulls away from the trellis, it only needs to be returned to a proper position. Pole beans take longer to ready for harvest, but produce more beans over a longer time. Plant in succession over a period of four to six weeks to further extend the harvest. In warm southern climates, plant a second crop in the late summer for a fall harvest.
Choose a well-drained site with full sun or partial shade. Pole beans do best with full sun. Wait until after the last frost date for planting. Construct a trellis on the site if needed.
Remove grass, weeds and rocks from the area next to the trellis. Loosen the soil by digging it. Mix in a layer of organic compost or aged manure. Rake the area smooth.
Plant seeds 1 inch deep at the base of the trellis, about 2 to 3 inches apart. Water generously after planting. Water every few days until the beans sprout, if there is no rain.
Thin the pole bean plants to 6 inches apart. Remove weeds regularly, before they have a chance to grow. Pulling established weeds can damage the root system of beans. As the beans grow, lift the plant onto the trellis and wrap the tendrils around the trellis to hold it in place.
Water regularly during dry periods. Water the base of the plant in the morning and avoid wetting the leaves. Pole beans need about 1 to 1 1/2 inches of water a week.
Pick pole beans when the pods are full size, and the beans are still small. Pick daily to increase the harvest and catch the beans while still tender. Growing the beans on the trellis allows access to the beans and makes harvesting easier.