Both vines are propagated the same way, by rooting cuttings taken in spring. However, when you root cuttings, a few may not take, so it's wise to root a few more than you actually need. Here are four easy steps to growing garden-ready rooted cuttings. Fill several clean 6-inch flowerpots with moist seed starting mix or a half-and-half mixture of peat moss and sand. Water well, and use a pencil to poke holes where you will place the cuttings. Soon after established plants show new growth in early spring, take 3-inch-long stem cuttings. Side shoots taken from near the base of the plants work best. Dip the cut ends in rooting hormone and push them into the prepared containers. You can set 4 stem cuttings in each pot. Press soil firmly around the cuttings.
Enclose the containers in a loose plastic bag, using long skewers or sticks to hold the plastic above the cuttings. Keep at 75F in filtered light until roots develop. Check regularly to make sure the soil in the pots remains constantly moist. Remove the plastic as soon as new growth appears. After several weeks, when the cuttings have rooted, transplant them to individual pots, discarding any that did not root. Move the pots outdoors to a partially shaded spot. After a few days, pinch off the growing tips to encourage the development of side shoots. Wait another week or two before transplanting the rooted cuttings to the garden.