Gaura plants can be propagated by taking cuttings or sowing seeds.
Cuttings
Take cuttings: During the growing season, cut 5–10 cm lengths of non-flowering shoots from the base of the plant.
Prepare cuttings: Remove the lowest leaves and soft tip, leaving 2–4 leaves. You can also dip the ends of the cuttings in rooting hormone.
Plant cuttings: Insert the cuttings into a pot filled with a well-draining compost mix. Space the cuttings a few inches apart.
Provide warmth and light: Place the pot in a warm, bright location out of direct sunlight. You can cover the pot with a plastic bag to help maintain warmth and humidity.
Water and monitor: Water the cuttings regularly and check them daily.
Wait for roots: Roots will emerge from the bottom of the container.
Pot the rooted cuttings: Gently remove the rooted cuttings and pot them into individual pots.
Seeds
Prepare the soil: Fill a container with drain holes with seed-starting mix and moisten it.
Sprinkle the seeds: Sprinkle the seeds sparingly on the soil and cover them with a scant 1/4 inch of the planting medium.
Provide light and moisture: Ensure your seeds are fresh and viable, and maintain consistent moisture without over-watering.
Gaura plants grow best in full sun and well-drained soil, but they can also tolerate partial shade and dry soils.