Arum Lily vs. Calla Lily: A Comprehensive Guide to Identification, Care, and Use

Introduction

Arum lilies and calla lilies are two popular flowering plants that often grace gardens and homes. While they share a similar appearance, these plants belong to different botanical families and exhibit distinct characteristics. This comprehensive guide will delve into the key differences between arum lilies and calla lilies, providing detailed information on their identification, care, and use.

Identification

Arum Lily (Zantedeschia)

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• Belongs to the Araceae family
• Native to South Africa
• Features a showy spathe (modified leaf) that wraps around a spadix (fleshy spike)
• Spathe colors range from white and yellow to pink, orange, red, and purple
• Leaves are broad, arrow-shaped, and often variegated

Calla Lily (Zantedeschia aethiopica)

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• Belongs to the Araceae family
• Native to South Africa
• Also features a spathe that wraps around a spadix
• Spathe is typically pure white or cream-colored
• Leaves are dark green, arrow-shaped, and non-variegated

Care

Arum Lily

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• Prefers indirect sunlight or partial shade
• Requires well-drained soil
• Water regularly, allowing soil to dry slightly between waterings
• Fertilize monthly during the growing season
• Divide plants every 3-4 years to prevent overcrowding

Calla Lily

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• Tolerates full sun to partial shade
• Prefers moist, heavy soil
• Water frequently, especially during hot weather
• Fertilize sparingly
• Can be left undisturbed for many years

Use

Both arum lilies and calla lilies are popular ornamental plants used in various settings:

Arum Lily

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• Grown in gardens as border plants or focal points
• Cut and used in floral arrangements
• Prized for their exotic appearance

Calla Lily

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• Planted in gardens as stately additions
• Extensively used in bridal bouquets and other floral arrangements
• Highly valued for their elegant white spathe

Tips

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• Arum lilies are toxic to humans and pets
• Calla lilies are generally considered non-toxic, but ingestion of large amounts may cause discomfort
• Avoid overwatering either plant, as it can lead to root rot
• Deadhead spent flowers to encourage new growth
• Protect both plants from frost and extreme cold

Conclusion

Arum lilies and calla lilies are captivating flowering plants that bring beauty and elegance to any space. By understanding their unique characteristics, care needs, and potential uses, you can enjoy these stunning plants to their fullest. Whether you choose the vibrant arum lily or the classic calla lily, these plants will undoubtedly enrich your garden or home.