Ivy

Fertilizing

Feed your ivy bonsai with balanced liquid fertilizer every 2-4 weeks during the growing season. Since ivy is a vigorous grower, consistent fertilization is important for maintaining healthy growth. During the dormant winter period, reduce or stop fertilizing altogether. Be careful not to over-fertilize as this can lead to root burn - always follow the manufacturer's dilution instructions carefully. Using organic fertilizers can help provide a steady supply of nutrients without risk of chemical burns.

Placement

Ivy bonsai thrives in bright, indirect light but should be protected from direct afternoon sun which can scorch the leaves. The ideal location is near a window with filtered light or outdoors in partial shade. While ivy is quite adaptable to different light conditions, it performs best with consistent moderate light. Temperature-wise, keep your ivy bonsai between 60-75°F (15-24°C). Although hardy, protect from freezing temperatures by moving indoors or to a greenhouse when temps drop below 40°F (5°C). High humidity is beneficial - consider placing on a humidity tray or misting regularly.

Pruning

Prune regularly throughout the growing season to maintain shape and encourage dense growth. Since ivy is a fast-growing vine, frequent trimming is necessary to keep it compact. The main pruning technique involves cutting branches back to 2-3 leaves to build ramification. For structural pruning, trim branches back to where they meet the main trunk. Pinching new growth tips will promote bushier growth. Remember that ivy does not naturally grow as a tree, so careful pruning and training with wire is essential to create and maintain a bonsai form. Wire branches gently using soft, flexible wire and check regularly to prevent scarring.

Repotting

Repot your ivy bonsai in early spring just as new growth begins to emerge. While ivy is quite tolerant and can technically be repotted any time, spring repotting gives the best results. Use a well-draining bonsai soil mix made of equal parts akadama, pumice, and organic potting soil. Ivy has a remarkable ability to generate new roots, so you can be fairly aggressive with root pruning. When repotting, remove old soil and trim back approximately 1/3 of the roots. Ensure proper drainage by using a pot with adequate holes and positioning the tree so the root flare (nebari) is visible above the soil line.

Watering

Keep the soil consistently moist but not waterlogged. Water thoroughly when the top layer of soil begins to feel dry, ensuring excess water drains freely from the pot. Ivy is relatively forgiving of irregular watering but performs best with consistent moisture. During hot weather or periods of active growth, you may need to water daily. Reduce watering frequency in winter but never allow the soil to completely dry out. Using a well-draining soil mix and proper pot with drainage holes helps prevent overwatering issues. Regular misting of the foliage can help maintain humidity and prevent spider mite problems.

References

Back Garden Bonsai - Ivy Bonsai Care Love for Bonsai - Ivy Bonsai Care Guide Green Zen Bonsai - English Ivy Bonsai