Potato plants are low-growing and have white flowers with yellow stamens. They grow best in cool, moist climates, though they are widely adaptable and are grown on a small scale in most temperate regions. Common varieties of potatoes do not produce seeds; the flowers are sterile. Instead, they are propagated by planting pieces of existing tubers, cut to include at least one eye. Confusingly, these pieces are called "seed potatoes".Photo credit: Agricultural Research Service