Calla Lily Bulbs: Your Guide to Planting, Growing, and Enjoying Beautiful Blooms

Introduction

Calla lilies, with their trumpet-shaped flowers and elegant foliage, are a popular choice for gardens and floral arrangements. Growing calla lilies from bulbs is a rewarding experience that can add beauty and color to your landscape. This comprehensive guide will provide all the information you need to select, plant, grow, and enjoy calla lilies successfully.

Choosing and Preparing Calla Lily Bulbs

Types of Calla Lily Bulbs

• Zante Calla (Zantedeschia aethiopica): White flowers with a yellow spadix, hardy in zones 8-11.
• Pink Calla (Zantedeschia rehmannii): Pink flowers, hardy in zones 8-10.
• Yellow Calla (Zantedeschia elliottiana): Yellow flowers, hardy in zones 9-11.
• Purple Calla (Zantedeschia albomaculata): Purple flowers, hardy in zones 9-11.

Selecting Healthy Bulbs

• Choose firm, plump bulbs free of bruises or blemishes.
• Avoid bulbs that are soft, spongy, or have mold or discoloration.
• Inspect the bulbs for any signs of pest or disease damage.

Preparing the Bulbs for Planting

• Soak the bulbs in lukewarm water for several hours before planting to rehydrate them.
• If the bulbs are dry, remove the outer brown scales before soaking.
• Discard any bulbs that show signs of decay or damage.

Planting Calla Lily Bulbs

Planting Time

In most areas, the best time to plant calla lily bulbs is in the spring, after the last frost. Avoid planting in the fall, as the bulbs may not survive the winter.

Planting Location

Calla lilies prefer well-drained soil in full sun to partial shade. Avoid planting in low-lying areas where water may collect.

Planting Depth and Spacing

• Plant the bulbs 4-6 inches deep and 6-8 inches apart.
• Place the bulbs on their sides with the pointed end facing up.
• Cover the bulbs with soil and gently press down to firm them in place.

Watering

Water the bulbs deeply after planting. Allow the soil to dry out slightly between waterings.

Growing and Care for Calla Lilies

Fertilizing

Fertilize calla lilies monthly during the growing season with a balanced fertilizer. Use a fertilizer that is rich in phosphorus, such as a 5-10-5 blend.

Watering

Calla lilies require consistent moisture. Water them regularly, especially during hot, dry weather. Avoid overwatering, as this can lead to root rot.

Mulching

Mulch around calla lilies with organic matter, such as compost or shredded bark. Mulching helps retain moisture, suppress weeds, and regulate soil temperature.

Supporting

Tall calla lily varieties may need support to prevent them from toppling over. Use stakes or cages to provide support.

Overwintering

In colder climates, calla lily bulbs must be overwintered indoors. Dig the bulbs up after the first frost and store them in a cool, dry place. Replant the bulbs in the spring after the last frost.

Common Problems and Pests

Pests

Aphids, thrips, and mealybugs can infest calla lilies. Control pests with insecticidal soap or neem oil.

Diseases

• Botrytis blight: Causes brown spots and wilting of leaves and flowers. Treat with fungicides.
• Root rot: Caused by overwatering, leads to yellowing leaves and stunted growth. Improve drainage and avoid overwatering.
• Bacterial soft rot: Causes soft, mushy bulbs. Discard infected bulbs and avoid planting in contaminated soil.

Enjoyment and Beyond

Calla lilies are a beautiful addition to any garden or floral arrangement. Enjoy their trumpet-shaped blooms throughout the summer. Cut flowers can be arranged in vases and displayed indoors for up to two weeks.

Companion Plants

Consider planting calla lilies with ferns, hostas, or other shade-loving plants for a lush and visually appealing display.

Propagation

Calla lilies can be propagated by dividing the bulbs. Divide the bulbs in the fall or spring, and replant the individual bulbs.

Conclusion

Growing calla lilies from bulbs is an easy and rewarding way to enjoy their beautiful blooms. By following these guidelines, you can successfully cultivate calla lilies in your garden and appreciate their stunning display throughout the summer. Remember to choose healthy bulbs, plant them at the right time and depth, and provide proper care to ensure the best growth and blooming performance.