The green bean plant is a warm-season vegetable often found growing in home gardens. Green bean seeds are available in either a bush or pole variety depending on the space available. Sow the seeds in spring once the risk of frost has passed and the soil begins to warm. Increase productivity by planting a row of beans every other week during the summer to provide a continuous harvest through out the growing season.
Prepare a garden area for green beans by working the soil with a tiller to a depth of 8 to 10 inches. Add 2 to 3 inches of organic compost or composted manure to increase the nutrient value of the soil. Remove all vegetative growth and rocks and smooth the area with a rake.
Apply a balanced fertilizer to the soil and work it with a rake or tiller to a depth of 3 to 4 inches before planting. Water the soil well after applying fertilizer.
Plant bush-growing bean seeds in a 1-inch deep furrow. Space the seeds 2 inches apart. Cover the bean seeds with soil and tamp to hold in place. Space the bush bean rows 18 inches apart.
Plant pole growing bean seeds by creating a 2- to 3-inch mound. Insert a 6-foot support pole in the center of each mound and plant 3 to 4 seeds around it at a depth of 1 inch. Space the mounds 3 feet apart.
Water the seeds immediately after planting to saturate the soil to a depth of 3 to 4 inches. Provide supplemental water to the bean plants so the soil stays evenly moist during the growing season. Monitor the soil moisture during the hot summer months and water when the soil becomes dry to a depth of 1 to 2 inches.
Fertilize the bean plants with a garden vegetable fertilizer after the flowers turn to beans.
Thin bush plant seedlings once they reach a height of 2 to 3 inches so the plants are spaced 4 inches apart. Remove weeds as they appear by gently pulling them from the soil. Bean plants produce shallow roots that are unearthed and damaged easily.
Harvest mature beans when the pod is firm to the touch and the seeds are slightly immature. Gently snap the beans from the plant; the branches are brittle and break easily.