Bougainvilleas are stunning and vibrant climbing plants, making it easy to see why you might want to propagate your own or a friend's. Even in colder climates, their adaptability to container planting keeps them popular among gardeners.

These evergreen climbers are not only visually striking, but they also bloom abundantly. Once you understand how to care for bougainvillea, maintaining them becomes straightforward. If the idea of expanding your garden with these beauties excites you, you’re in luck!

This article outlines two effective techniques for propagating bougainvillea, complete with insights from gardening experts.

Two Effective Techniques for Propagating Bougainvillea

orange flowering bougainvillea vine

One common method to propagate bougainvillea is by taking cuttings. Gardening expert Drew Swainston explains, “Semi-ripe cuttings or hardwood cuttings are the typical methods for propagating these plants.” While rooting may take several months, providing adequate warmth can speed up the process.

The second method involves layering, which is worth considering if you’re patient. Here’s how to use both techniques to propagate bougainvillea.

Drew Swainston

Drew Swainston

Propagating Bougainvillea Through Cuttings

Taking semi-ripe cuttings is a straightforward approach to propagate bougainvillea. If you have fallen for a friend's plant, don’t hesitate to ask for a cutting. To get started, take a cutting during the summer and follow these steps:

  1. To protect yourself from thorns, wear gloves and use sharp, clean pruning shears to cut a 4 to 6-inch section from a stem that is hard at the base but soft at the tip. Place it in a plastic bag.
  2. Remove any side shoots from the cutting.
  3. Make a small wound by cutting away a thin section of bark (about ½ inch long) at the base of the stem to help with rooting.
  4. Trim the lowest leaves and soft tips, leaving about four or five leaves at the top.
  5. Dip the cut end into rooting hormone powder and shake off any excess.
  6. Plant the cutting in potting mix, watering it well. Keep it in a heated propagator or cover it with a plastic bag to create humidity, placing it in a warm, bright area away from direct sunlight. Ensure the soil stays damp.
  7. Rooting may take four to six weeks or longer. Once new leaves and growth appear, remove the cutting from the propagator or take off the bag. Allow it to harden off for two to three weeks before transferring it to a permanent location.

When propagating bougainvillea using cuttings, consider taking multiple cuttings to increase your success rate.

Propagating Bougainvillea by Layering

Layering is another method to create new bougainvillea plants from an established one in your garden. This technique is best done in spring. Follow these steps as suggested by garden writer Graham Rice:

  1. Locate the tip of a branch that is close to the soil.
  2. Clear away any weeds or mulch from the soil near where the shoot touches the ground, about 6 to 9 inches from the tip.
  3. Excavate soil until the lower part of the shoot can reach about 1 inch deep in the ground. Cover it with soil and press down firmly.
  4. Place a stone or brick over the section of the shoot that is buried.
  5. Wait until fall, when roots should have formed and new growth appears at the tip.
  6. Follow the shoot from the tip back to just past the rooting point and cut it off. Dig up the rooted section and plant it in your chosen spot for the new bougainvillea.

Frequently Asked Questions

Can bougainvillea be grown from seeds?

While it is possible to grow bougainvillea from seeds, cuttings are the more popular method of propagation. In the fall, you’ll need to locate seed pods on a mature plant. Keep in mind that the actual flowers of bougainvillea are small and white, while the vibrant colors come from the bracts. The seed pods are found inside the flowers. After collecting the pods, dry them out. The seeds inside can be germinated in seed compost, needing warmth from a heated propagator or plastic bags, although germination may take some time.

Bougainvilleas are eye-catching climbers, and you may wish to add more to your garden. “One of the main advantages of propagating bougainvillea from cuttings is the cost savings,” notes Drew Swainston. “This method allows you to grow more plants at a lower cost than purchasing them from a nursery. Although it can take time and patience, the satisfaction of propagating your own bougainvillea is immensely rewarding.”

For additional information on bougainvilleas, check out our guide on why your bougainvillea isn’t flowering.