While potatoes are typically grown from tubers, it is possible to grow them from stem cuttings. To do this, simply take a cutting from a potato plant and plant it in moist soil. The cutting will eventually produce roots and shoots, and a new potato plant will begin to grow. With a little care and patience, you can successfully grow potatoes from stem cuttings. Just be sure to keep the cutting moist and give it plenty of sunlight; soon enough, you'll have a healthy new potato plant!