Mandevilla vine is known for its showy blooms. Largely grown in containers or hanging baskets, this tropical vine is generally treated as a houseplant, especially in cooler regions. In southern climates, it can be set outdoors in spring but returned inside prior to winter. Learning how to propagate mandevilla is easy. Mandevilla propagation is accomplished by seed or cuttings.
How to Grow Mandevilla Seeds
Propagating mandevilla from seed isn’t difficult, though it is best achieved with fresh seeds. Seedpods should be allowed to remain on the plant to dry before removing them. These can be easily recognized by their inverted v-shaped appearance.
Once the mandevilla seed pods have dried, they will turn brown in color. They will also begin to split open, revealing fluffy, dandelion-like seeds. At this time the seeds are ready to be collected.
For better results, soak the mandevilla seeds in water for about twelve hours prior to sowing them in well-draining soil. Mandevilla seeds require shallow planting, only covering them slightly with soil. Keep these moist and warm (about 65-75 F./18-24 C.) and place them in bright, indirect light. The seeds should germinate within a month or so.
How to Propagate Mandevilla Cuttings
Mandevilla vine is very easy to propagate from cuttings. While the best time to take cuttings is in spring, you can also take them in late summer or fall with some success. Cuttings should be made from tips or side shoots and about 3 inches (7.5 cm.) long. Remove all but the top two leaves. If desired, dip the mandevilla cuttings in rooting hormone and then stick them in a sandy peat mix.
Place the mandevilla cuttings in a somewhat shady area and keep them warm, moist, and humid. In fact, it may be helpful to place them in a plastic bag (with small air holes to release excess moisture). Once roots develop within a month or two, you can pinch back new growth to promote bushier growth if desired.
Mandevilla propagation is just that easy. Now that you know how to grow mandevilla seeds or root mandevilla cuttings, you can grow this lovely vine year after year.