Digging Up Calla Lily Bulbs: A Comprehensive Winter Care Guide

Key Takeaways:

• Dig up Calla Lily bulbs after the first frost in USDA zones 7 and below
• Properly clean, dry, and store bulbs to prevent rot and disease
• Monitor stored bulbs throughout winter and replant in spring

For gardeners in colder climates, the arrival of winter signals an important task: safeguarding your beloved Calla Lilies. These elegant flowers, while stunning in bloom, require special care to survive harsh winter conditions. Let’s dive into the essential process of digging up Calla Lily bulbs, ensuring their protection and setting the stage for a vibrant spring display.

Why Dig Up Calla Lily Bulbs?

Calla Lilies, native to warmer regions, aren’t naturally equipped to handle freezing temperatures. In USDA hardiness zones 7 and below, digging up the bulbs (technically rhizomes) is crucial for their survival. This process allows the rhizomes to enter a proper state of dormancy, preserving their energy for the next growing season.

Calla Lily in winter snow

If your winter means freeze, snow and cold, your outdoor Calla Lily would certainly need intervention

For those lucky gardeners in zone 8 and above, your Calla Lilies can typically overwinter in the ground with some added protection. A layer of mulch can provide insulation, but remember to leave a small gap around the stems to prevent rot.

When to Dig Up Calla Lily Bulbs

Timing is crucial when it comes to digging up your Calla Lilies. The ideal moment is shortly after the first frost has caused the foliage to die back, typically in late fall. This ensures that the plants have stored up enough energy to survive their winter dormancy.

Step-by-Step Guide to Digging Up Calla Lily Bulbs

1. Carefully Excavate the Rhizomes

Using a garden fork, gently lift the Calla Lily rhizomes from the soil. Take care not to damage them in the process.

2. Remove Excess Soil

Brush off loose soil from the rhizomes using your hands or a soft brush. Avoid washing them, as excess moisture can lead to rot.

3. Inspect for Health Issues

Examine each rhizome carefully for signs of disease or damage. Discard any that show rot or other problems to prevent spread.

4. Trim the Foliage

Using clean, sharp pruning shears, cut back the remaining foliage to about 2-3 inches (5-7.5 cm) above the rhizome. Make angled cuts to discourage water pooling.

5. Cure the Rhizomes

Allow the rhizomes to dry in a warm, well-ventilated area for 4-7 days. Aim for temperatures between 65-75°F (18-24°C). This curing process toughens the outer skin, improving winter survival rates.

6. Prepare for Storage

After curing, wrap the rhizomes in newspaper or place them in paper bags. Choose a cool, dry storage location with a consistent temperature around 50°F (10°C).

7. Monitor Throughout Winter

Regularly check your stored rhizomes for signs of sprouting or decay. If you notice any issues, trim away damaged areas and apply a fungicide if necessary.

Tips for Successful Winter Storage

• Maintain good air circulation around stored rhizomes to prevent moisture buildup
• Never water dormant rhizomes – they don’t need it and excess moisture can cause rot
• If storing multiple varieties, label them clearly to avoid confusion in spring

Replanting in Spring

When the danger of frost has passed and soil temperatures begin to warm, it’s time to reintroduce your Calla Lilies to the garden.

Calla Lily ready for replanting

Your Calla Lily will be ready to return to its garden when the last frost is over and the soil has warmed up

Choose a sunny spot with well-draining soil, and plant the rhizomes about 4 inches deep and 12-18 inches apart. Water thoroughly after planting and look forward to the beautiful blooms to come!

Conclusion

Digging up Calla Lily bulbs may seem like a daunting task, but with these steps, you’ll be well-equipped to protect your precious plants through the winter months. This extra care ensures that your Calla Lilies will return year after year, gracing your garden with their elegant presence.

Remember, gardening is a journey of continuous learning and adaptation. Each season brings new challenges and rewards. By taking the time to properly care for your Calla Lilies, you’re not just preserving plants – you’re nurturing beauty and life itself.

Have you had success overwintering Calla Lilies in your garden? Share your experiences and tips in the comments below. Happy gardening!