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Calla lilies are elegant and popular flowering plants that can brighten up any garden or indoor space. Proper division of these plants is essential for maintaining their health and encouraging new growth. Knowing the right time to divide calla lilies ensures the plants remain vigorous and beautiful.
Understanding Calla Lily Growth
Calla lilies (Zantedeschia spp.) grow from rhizomes, which are underground stems that store nutrients. Over time, these rhizomes can become crowded, leading to reduced flowering and weaker plants. Dividing the rhizomes allows for better growth and more abundant blooms.
Best Time to Divide Calla Lilies
The optimal time to divide calla lilies is during their dormant period, which typically occurs in late fall or early spring. Dividing during dormancy minimizes stress and promotes healthy root development. Avoid dividing during active flowering or when the plant is actively growing, as this can hinder recovery.
Spring Division
Spring is considered the best time for division because the plant is just emerging from dormancy. This allows new rhizomes to establish themselves before the growing season begins. Perform division when the foliage has died back or before new growth starts.
Fall Division
Fall division is also possible, especially if the plant has become overcrowded. Wait until the foliage has yellowed and died back naturally. This signals that the plant is entering dormancy, making it safe to dig up and divide the rhizomes.
How to Divide Calla Lilies
Dividing calla lilies involves carefully digging up the rhizomes and separating them into sections. Each section should have at least one growth point or eye and some roots attached. Use a clean, sharp knife or garden shears to cut the rhizomes if necessary. After dividing, plant the sections at the same depth as the original rhizomes.
Post-Division Care
After dividing, water the plants thoroughly and place them in a location with bright, indirect sunlight. Keep the soil consistently moist but not waterlogged. Fertilize lightly to encourage healthy growth. Allow the divided plants time to establish before expecting full blooms.
Signs It’s Time to Divide
If your calla lilies show signs of overcrowding, such as reduced flowering, stunted growth, or leaves that are crowded and overlapping, it’s time to consider dividing. Regular division every few years helps maintain the plant’s vigor and ensures a healthy display of flowers.
Summary
Dividing calla lilies at the right time—preferably in early spring or fall—promotes healthy growth and vibrant blooms. Proper timing, careful division, and attentive post-divison care are key to maintaining thriving calla lily plants. With patience and proper technique, gardeners can enjoy lush, beautiful calla lilies year after year.