What To Know
- The optimal time to divide calla lily rhizomes is during the plant’s dormant period, typically in late summer or early fall.
- Can I divide calla lily rhizomes in the spring.
- Dividing calla lily rhizomes in the spring is not recommended as it can disrupt the plant’s active growth cycle.
Calla lilies, with their graceful trumpet-shaped blooms, are a beloved addition to gardens and landscapes. However, over time, calla lily rhizomes can become overcrowded, leading to reduced flowering and overall plant health. Dividing calla lily rhizomes is a crucial technique to rejuvenate your plants, promote vigorous growth, and ensure abundant blooms season after season.
Understanding Calla Lily Rhizomes
Calla lilies grow from fleshy, underground rhizomes that are essentially thickened stems. These rhizomes serve as storage organs for nutrients and water, providing the plant with the necessary resources for growth and blooming. Over time, rhizomes can become congested, which can hinder nutrient uptake and root development.
Benefits of Dividing Calla Lily Rhizomes
Dividing calla lily rhizomes offers several benefits, including:
- Improved flowering: Dividing overcrowded rhizomes reduces competition for nutrients, resulting in more vigorous growth and increased flower production.
- Enhanced plant health: Removing old and congested rhizomes improves air circulation and reduces the risk of disease and pests.
- Rejuvenation: Dividing rhizomes stimulates new root growth and rejuvenates the entire plant, promoting longevity and overall health.
- Propagation: Dividing rhizomes allows you to propagate new calla lily plants, expanding your collection or sharing the beauty with others.
When to Divide Calla Lily Rhizomes
The optimal time to divide calla lily rhizomes is during the plant’s dormant period, typically in late summer or early fall. This allows the plant to recover and establish new roots before the active growing season begins in spring.
Materials You’ll Need
- Sharp knife or pruning shears
- Gloves
- Potting soil or compost
- Pots or containers with drainage holes
- Watering can or hose
Step-by-Step Guide to Dividing Calla Lily Rhizomes
1. Dig Up the Rhizomes: Carefully dig around the calla lily plant to expose the rhizomes. Use a shovel or trowel to gently lift the rhizomes out of the ground.
2. Clean the Rhizomes: Remove any excess soil or debris from the rhizomes. Rinse them gently with water to remove any remaining dirt.
3. Identify the Eyes: Look for small, raised bumps on the rhizomes. These are called eyes, and they are where new shoots will emerge.
4. Divide the Rhizomes: Use a sharp knife or pruning shears to divide the rhizomes into sections. Each section should have at least one eye and a portion of the rhizome.
5. Plant the Rhizomes: Fill pots or containers with fresh potting soil or compost. Plant the rhizomes shallowly, with the eyes facing up.
6. Water the Rhizomes: Water the rhizomes thoroughly after planting. Keep the soil moist but not soggy.
7. Overwinter the Rhizomes: Place the pots or containers in a cool, dark location for the winter. Keep the soil slightly moist.
Aftercare for Divided Calla Lily Rhizomes
- Spring Care: Once the danger of frost has passed, bring the pots or containers outdoors. Gradually expose the plants to direct sunlight and increase watering frequency.
- Fertilizing: Fertilize the calla lilies regularly during the growing season with a balanced fertilizer.
- Replanting: Once the plants have established new roots and foliage, you can replant them in the garden.
Troubleshooting Common Problems
- No new growth: If the rhizomes do not produce new growth, they may have been damaged or diseased. Remove any damaged or unhealthy rhizomes and replant the healthy ones.
- Yellowing leaves: Yellowing leaves can indicate overwatering or nutrient deficiency. Adjust the watering schedule and fertilize the plants accordingly.
- Pest infestation: Calla lilies can be susceptible to pests such as aphids or spider mites. Treat the plants with an appropriate pesticide.
Final Note: The Art of Calla Lily Rhizome Division
Dividing calla lily rhizomes is a simple yet effective technique that can rejuvenate your plants, promote abundant flowering, and extend their lifespan. By following the steps outlined in this guide, you can ensure that your calla lilies continue to grace your garden with their elegant blooms for many years to come.
Answers to Your Most Common Questions
Q: How often should I divide calla lily rhizomes?
A: Divide calla lily rhizomes every 3-5 years to prevent overcrowding and maintain optimal plant health.
Q: Can I divide calla lily rhizomes in the spring?
A: Dividing calla lily rhizomes in the spring is not recommended as it can disrupt the plant’s active growth cycle.
Q: What size should the rhizome sections be?
A: Each rhizome section should be at least 2 inches long and have one or more eyes.
