Phaseolus spp. Light: Full Sun Ph level: 6.0 – 6.5 Seed depth: 2 inch Plant spacing: 6 inches Row spacing:18-30 inches Days to harvest:55 days Once called string beans, snap beans (Phaseolus vulgaris) have had the strings bred out of them. They usually have thick, crunchy, blue-green pods, but also may be yellow (wax) or purple. Another type is the French delicacy called filet or haricot bean, which is eaten when young and slender.