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Calla lilies are a popular choice for container gardening due to their elegant appearance and relatively easy care. Proper dividing and repotting techniques can ensure healthy growth and vibrant blooms year after year.
Understanding Calla Lilies in Containers
Calla lilies (Zantedeschia spp.) are native to Africa and thrive in well-drained soil with consistent moisture. When grown in containers, they require specific attention to their dividing and repotting needs to prevent overcrowding and promote vigorous growth.
When to Divide Calla Lilies
Dividing calla lilies is typically done in early spring or after the flowering season. Look for signs of overcrowding, such as:
- Multiple shoots emerging from a single container
- Reduced flowering or smaller blooms
- Thickened or crowded rhizomes
How to Divide Calla Lilies
Follow these steps to divide calla lilies successfully:
- Carefully remove the container from the plant and gently shake off excess soil.
- Use a clean, sharp knife or garden shears to cut through the rhizomes, ensuring each division has at least one healthy shoot and some roots.
- Inspect the divisions for signs of disease or rot, removing any damaged parts.
- Allow the divisions to dry for a day to prevent rot during replanting.
Repotting Calla Lilies
Repotting is essential to provide space for growth and to refresh the soil. Use a well-draining potting mix rich in organic matter. Follow these steps:
- Select a container with drainage holes that is slightly larger than the current one.
- Fill the bottom with a layer of gravel or small stones to improve drainage.
- Place the rhizomes or divisions in the center and fill with soil, ensuring the top of the rhizome is just below the soil surface.
- Water thoroughly after planting.
Caring for Divided and Replanted Calla Lilies
After dividing and repotting, provide optimal care to ensure successful establishment:
- Keep the soil consistently moist but not waterlogged.
- Place the container in a location with bright, indirect sunlight.
- Apply a balanced fertilizer every 4-6 weeks during the growing season.
- Remove any yellowing or damaged leaves to maintain plant health.
Tips for Container Success with Calla Lilies
Achieving success with calla lilies in containers involves proper planning and maintenance:
- Choose the right-sized container to allow for root growth.
- Use high-quality, well-draining soil.
- Ensure adequate watering, especially during hot weather.
- Mulch the surface to conserve moisture and suppress weeds.
- Repot every 2-3 years or when the plant outgrows its container.
Conclusion
Dividing and repotting calla lilies are vital practices for maintaining healthy, beautiful plants in containers. With proper timing, technique, and care, your calla lilies can flourish and provide stunning blooms season after season.