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Calla lilies are beautiful and elegant plants that bloom with stunning flowers. Proper storage of their bulbs during the winter is essential to ensure healthy growth in the following season. In this article, we will explore the best practices for storing calla lily bulbs to keep them safe and viable through the colder months.
Understanding Calla Lily Bulbs
Calla lilies, scientifically known as Zantedeschia, grow from underground bulbs called rhizomes. These rhizomes store energy and nutrients, enabling the plant to regrow each year. In regions with cold winters, it is necessary to dig up and store these bulbs to prevent frost damage.
When to Harvest and Store Calla Lily Bulbs
The ideal time to harvest calla lily bulbs is after the plant has finished flowering and the foliage begins to yellow and die back. This typically occurs in late fall or early winter, depending on your climate. Prompt harvesting ensures the bulbs are healthy and ready for storage.
Steps for Harvesting
- Carefully dig around the base of the plant using a garden fork or trowel.
- Gently lift the rhizomes from the soil, avoiding damage.
- Brush off excess soil and inspect for signs of disease or rot.
- Cut back the foliage to about 2 inches above the rhizome.
Cleaning and Preparing Bulbs for Storage
Before storing, clean the bulbs thoroughly to prevent mold and rot. Allow them to dry in a warm, well-ventilated area for a few days. This drying process helps to harden the outer surface and reduces the risk of fungal infections.
Best Practices for Storage
Proper storage conditions are crucial for preserving calla lily bulbs. Follow these best practices:
- Store bulbs in a cool, dark, and dry location, ideally between 40-50°F (4-10°C).
- Maintain good air circulation around the bulbs to prevent moisture buildup.
- Place bulbs in a breathable container such as paper bags, mesh bags, or cardboard boxes.
- Avoid storing bulbs in plastic bags, which can trap moisture and promote rot.
Monitoring and Maintenance
Periodically check stored bulbs for signs of mold, rot, or dehydration. Remove any damaged bulbs immediately to prevent the spread of disease. If bulbs appear shriveled, lightly mist them with water to maintain humidity, but do not overwater.
Replanting Calla Lilies
In spring, when the danger of frost has passed, replant the bulbs in well-draining soil. Choose a sunny location and plant the rhizomes about 4-6 inches deep. Water thoroughly and provide appropriate care to encourage healthy growth and vibrant blooms.
Conclusion
Proper storage of calla lily bulbs during winter ensures that you can enjoy their beauty year after year. By harvesting at the right time, cleaning and drying the bulbs, and storing them under optimal conditions, you can protect your plants from cold damage and promote healthy growth in the spring.