Calla lilies (Zantedeschia spp.) are ornamental plants known for their trumpet-shaped blooms and lush green foliage. Certain varieties, particularly Zantedeschia aethiopica, thrive in moist soil and shallow water, making them excellent marginal plants for ponds, bog gardens, and water features.
Can calla lilies grow in a pond?
Yes. Calla lilies can grow along pond edges, but not all varieties tolerate standing water.
- White calla lily (Zantedeschia aethiopica): Suitable for shallow pond margins and consistently wet soil.
- Colored calla lilies: Generally prefer moist, well-drained soil rather than submerged planting conditions.
- Sunlight: Full sun to partial shade. Afternoon shade is beneficial in hot climates.
- Blooming: Typically late spring through summer, depending on the variety and climate.
How to plant calla lilies in a pond
- Select an aquatic planting container large enough to accommodate the plant's roots.
- Fill the container with aquatic planting media suitable for pond plants.
- Position the calla lily at the same planting depth as its original container.
- Place Zantedeschia aethiopica along the pond's shallow edge, keeping the foliage above the water.
- Provide adequate sunlight and maintain consistent moisture throughout the growing season.
Important: Only varieties suitable for aquatic conditions should be placed in standing water. Most colored calla lilies should be grown in containers outside the pond or in moist planting beds.
How to care for calla lilies
- Watering: Keep the soil consistently moist during active growth.
- Sunlight: Provide full sun to partial shade, depending on local temperatures.
- Maintenance: Remove yellowing leaves and spent flowers to encourage healthy growth.
- Growth: Divide overcrowded plants when necessary to maintain healthy development.
Can calla lilies survive winter in a pond?
Winter survival depends on the variety and local climate.
- White calla lilies (Zantedeschia aethiopica) are generally hardy in USDA Zones 8–10, with some varieties surviving in Zone 7 with protection.
- Tender varieties should be removed before freezing temperatures.
- Store dormant rhizomes in a cool, dry, frost-free location during winter.
- Return plants outdoors in spring after the danger of frost has passed.
Important: Calla lilies are not true lilies. They belong to the Araceae family and contain calcium oxalate crystals that can be harmful if ingested by people or pets.