The ideal time to plant sieva pole beans is when the soil temperature reaches 65 F. Inexpensive soil thermometers are available online and in garden centers and nurseries.
Sieva pole beans require a steady supply of fertilizer throughout the growing season. A 5-10-15 formula is ideal and should be applied for the first time as soon as the beans sprout.
Harvest the sieva pole beans when the pods are plump and green. Use your fingers to lightly pinch the ends of the pods -- they should be soft.