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Calla lilies are elegant and popular flowering plants that add a touch of sophistication to gardens and indoor spaces. Properly dividing these plants can promote healthier growth and more abundant blooms. Knowing the right time to split calla lily plants is essential for maintaining their vitality and ensuring vigorous development.
Understanding Calla Lily Growth Cycles
Calla lilies grow from rhizomes, which are thick, underground storage organs. These rhizomes produce new shoots and roots each growing season. Over time, the plant can become crowded, leading to reduced flowering and weaker growth. Dividing the rhizomes helps rejuvenate the plant and encourages new, healthy growth.
Best Time to Split Calla Lily Plants
The optimal time to divide calla lilies is during their dormant period, typically in early spring before new growth begins or in late fall after the plant has finished blooming. Dividing during dormancy minimizes stress and allows the plant to recover and establish quickly in the upcoming growing season.
Spring Division
Dividing in early spring is ideal because it coincides with the start of the plant’s active growing season. Prepare the garden bed or pot, carefully dig up the rhizomes, and separate them into smaller sections. Each section should have at least one growing point or eye to ensure healthy new growth.
Fall Division
If you missed the spring window, late fall after the plant has finished flowering is another suitable time. Carefully dig up the rhizomes, clean off any excess soil, and divide them. Store the divided rhizomes in a cool, dry place if you plan to replant them in spring.
Steps for Dividing Calla Lilies
- Gently dig around the base of the plant to expose the rhizomes.
- Carefully lift the rhizomes from the soil.
- Use a sharp, clean knife or garden shears to divide the rhizomes into sections, ensuring each has at least one eye or growth point.
- Allow cut surfaces to dry and callous for a day or two to prevent rot.
- Plant the divided rhizomes in well-draining soil, about 2-3 inches deep.
- Water thoroughly and place in a location with bright, indirect sunlight.
Aftercare and Tips
After dividing and planting, maintain consistent moisture but avoid overwatering. Fertilize lightly during the growing season to support healthy development. Watch for signs of stress or disease, and remove any damaged or rotting parts promptly. With proper care, divided calla lilies will thrive and produce beautiful blooms year after year.