Beans generally do not respond well to transplanting, and are usually direct sown around or just after the last spring frost. The most important point about growing beans is not to plant them too early. They will rot in cool, damp soil. Even so, many beans require a long growing season of 80 days or more. To get an earlier start, you can put down black plastic, to warm the soil.
Most beans should be sown with the eye of the been facing downward, 1-2" deep, approximately 4-6" apart, with 24" or more between rows. The ideal site will be sunny, well-drained, moderately fertile, and slightly acidic (pH 6.0-7.0). Additionally, bean plants should be well-ventilated to promote proper development and deter mildew or mold that can trouble plants. Beans should not be grown in the same spot more than once every four years, and can be mutually beneficial with corn,
strawberries and cucumber. Avoid planting beans near onion or fennel.
Plant bush beans in either rows or blocks, with 4-6 inches between each seed. Plant the seeds 1-2 inches deep and be sure to water the soil immediately and regularly, until it sprouts. Pole beans will need some type of support to grow on. Be sure the trellis, teepee, fence or whatever is in place before you seed. Plant seeds at a rate of about 3-6 seeds per teepee or every 6 inches apart.
When watering, try to avoid getting the leaves wet as this can promote fungus or other damaging conditions that beans can be susceptible to. Most types of beans are somewhat drought resistant, but check the surface of the soil frequently and water when the top layer has become dried out.
Once established, beans generally will not require fertilizing and will generate their own nitrogen. However, if the leaves of young plants are pale this is an indication of nitrogen deficiency and starts can be fertilized with with fish emulsion or other natural nitrogen rich fertilizer.
Bush beans begin producing before pole beans and often come in all at
once. Staggered planting, every 2 weeks, will keep your bush beans going longer. Pole beans need time to grow their vines, before they start setting beans. The pole bean crop will continue to produce for a month or two.
Pole beans may need some initial help in climbing. Keep the bean plants well watered. Mulch helps keep their shallow roots moist. Long producing pole beans will benefit from a feeding or a side dressing of compost or manure about half way through their growing season.