Most people don't know that regular dried soup beans can be planted and grown into producing bean plants. Planted pinto beans and black beans grow into a plant that will produce quite tender and delicious green beans if picked while they are still immature (like most green beans). There is no need to buy garden seeds when you already have them sitting in your pantry. Kids love this kind of project because the beans grow quickly and produce yummy finger food.
Decide how many bean plants you would like to have based on the amount of room you have in the garden. Basically figure on planting a bean every 3 inches in rows running north to south and at least 12 inches apart. Measure out your space in inches and divide it by 3 to get the total number of beans to plant. Now add about 25 percent to that number in case some do not sprout.
Soak the beans overnight in a container so that they are immersed in water. Drain them the next day when you are ready to plant them.
Loosen up the soil to a depth of 3 or 4 inches with a hoe, removing any rocks or sticks. Mark the row with a string stretch between two sticks and pushed into the ground at either end of the row.
Bury the damp beans carefully into a hole about 1 inch deep made either by your finger or by a pencil or stick. Push the dirt from the side to cover the hole and gently tamp down.
Sprinkle the row with a fine stream of water so as not to wash away the dirt, exposing the bean. After a few days, the beans should emerge as little sprouts. A few weeks later, you should see blossoms and then quickly, small beans. Pick them while they are thin and straight, before the beans inside start bulging.