- Light: Bougainvillea bonsai thrive in full sunlight. Place your bonsai in a sunny location where it can receive at least 6-8 hours of direct sunlight per day. Lack of adequate light can result in poor flowering and leggy growth.
- Watering: Bougainvillea bonsai prefer slightly moist soil. Water the plant thoroughly when the top inch of soil feels dry to the touch. Ensure proper drainage to prevent waterlogging, as bougainvilleas are susceptible to root rot. Reduce watering frequency during the dormant season (winter).
- Soil: Use a well-draining bonsai soil mix that provides good aeration and drainage. A mix of akadama, pumice, and lava rock is suitable for bougainvillea bonsai. Repot your bonsai every 1-2 years to refresh the soil and prune the roots.
- Fertilizing: Feed your bougainvillea bonsai with a balanced, water-soluble fertilizer during the growing season (spring and summer). Dilute the fertilizer to half strength and apply every two weeks. Reduce or stop fertilizing during the dormant season (fall and winter).
- Pruning: Regular pruning helps maintain the shape and size of your bougainvillea bonsai. Prune after each flowering cycle to encourage new growth and promote branching. Remove any dead or diseased branches, as well as any vigorous shoots that disrupt the bonsai’s silhouette.
- Training: Bougainvillea bonsai can be trained using wiring techniques to guide the branches into the desired position. However, be cautious as bougainvillea branches are brittle and can break easily. Alternatively, you can use pruning to shape and train the bonsai over time.
- Pests and Diseases: Keep an eye out for common bonsai pests such as aphids, scale insects, and spider mites. Treat any infestations promptly with insecticidal soap or neem oil. Bougainvilleas are generally resistant to diseases but can develop fungal infections if overwatered.