The Great Debate: Calla Lily vs Arum – Find Out Who Reigns Supreme!

The captivating beauty of the “calla lily” has captivated gardeners and flower enthusiasts alike for centuries. But did you know that the term “calla lily” is actually a misnomer? This elegant bloom, often used in wedding bouquets and floral arrangements, is not a true lily at all. It belongs to the genus *Zantedeschia*, while the true lilies are part of the *Lilium* genus. This confusion arises because of the striking resemblance between the *Zantedeschia* flower and the *Arum* genus, leading to the common name “calla lily” being used interchangeably with “arum lily.”

So, what exactly is the difference between a “calla lily” and an “arum”? Let’s delve into the fascinating world of these captivating flowers and unravel the truth behind their names.

Unveiling the Calla Lily: A Closer Look at *Zantedeschia*

The “calla lily”, also known as the arum lily, is a popular flowering plant belonging to the genus *Zantedeschia*. Native to South Africa, these stunning blooms are characterized by their unique trumpet-shaped spathe, which is actually a modified leaf that encases the true flower, known as the spadix. The spadix is a cylindrical structure that bears tiny, inconspicuous flowers.

*Zantedeschia* species come in a variety of colors, including white, yellow, pink, orange, and even purple. They are prized for their elegant appearance and are commonly used in floral arrangements, bouquets, and as decorative plants.

Exploring the Arum: Unveiling the Genus *Arum*

The *Arum* genus comprises a diverse group of flowering plants, commonly known as arums, lords-and-ladies, or cuckoopints. Like *Zantedeschia*, they are also characterized by their unique trumpet-shaped spathe and spadix structure. However, *Arum* species are generally smaller than *Zantedeschia* and often have a more distinct, pointed spathe.

*Arum* plants are primarily found in Europe, Asia, and North Africa. They are often found growing in woodlands and meadows and are known for their distinctive, sometimes pungent, odor.

Delving Deeper: The Key Differences Between Calla Lilies and Arums

While both *Zantedeschia* and *Arum* share a similar floral structure, there are several key differences that distinguish them:

1. Genus: *Zantedeschia* belongs to the genus *Zantedeschia*, while *Arum* belongs to the genus *Arum*.

2. Origin: *Zantedeschia* is native to South Africa, while *Arum* is native to Europe, Asia, and North Africa.

3. Size: *Zantedeschia* species are generally larger than *Arum* species.

4. Spathe Shape: *Zantedeschia* spathe is typically more rounded, while *Arum* spathe is often more pointed.

5. Fragrance: *Zantedeschia* has a mild fragrance, while *Arum* species can have a strong, sometimes unpleasant odor.

6. Toxicity: Both *Zantedeschia* and *Arum* species are toxic to humans and animals, containing calcium oxalate crystals that can cause irritation and swelling upon contact.

The Appeal of the “Calla Lily”: Why We Love It So Much

Despite the confusion surrounding its name, the “calla lily” continues to captivate our hearts and gardens. Here are some reasons why:

• Elegant and Sophisticated: The graceful trumpet-shaped spathe and the vibrant colors make the “calla lily” a symbol of elegance and sophistication.

• Versatility: It can be used in a variety of floral arrangements, from simple bouquets to elaborate wedding designs.

• Long-Lasting: “Calla lilies” have a relatively long vase life, making them a popular choice for long-lasting floral arrangements.

• Easy to Grow: With proper care, “calla lilies” are relatively easy to grow, both indoors and outdoors.

A Deeper Dive: Exploring the Different Types of Calla Lilies

The genus *Zantedeschia* includes several species and cultivars, each with its unique characteristics:

• *Zantedeschia aethiopica*: The most common and widely cultivated species, known for its large, white spathe.

• *Zantedeschia rehmannii*: This species features smaller, pink or red spathes and is often referred to as the “pink calla lily.”

• *Zantedeschia elliottiana*: Known for its yellow spathes, this species is often used in hybrid breeding.

• *Zantedeschia albomaculata*: This species features white spathes with dark purple spots.

The Arum: More Than Just a Flower

While the *Arum* genus may not be as widely cultivated as *Zantedeschia*, it still holds its own place in the world of plants. Here’s why:

• Unique and Distinctive: *Arum* species are known for their unique and distinctive floral structures and often have fascinating pollination mechanisms.

• Edible Roots: Some *Arum* species, like *Arum maculatum*, have edible roots that were traditionally used as a food source.

• Medicinal Properties: Certain *Arum* species have been used in traditional medicine for various ailments.

Final Thoughts: Beyond the Name, a World of Beauty and Intrigue

While the term “calla lily” is a misnomer, it’s a testament to the enduring beauty and appeal of the *Zantedeschia* genus. Both *Zantedeschia* and *Arum* offer a fascinating glimpse into the diversity and wonder of the plant world. From their elegant floral structures to their intriguing pollination mechanisms, these plants continue to captivate us with their beauty and mystery.

Quick Answers to Your FAQs

Q: Are “calla lilies” poisonous?

A: Yes, both *Zantedeschia* and *Arum* species are poisonous to humans and animals due to the presence of calcium oxalate crystals. Ingestion can cause severe irritation, swelling, and even difficulty breathing. It is important to keep these plants out of reach of children and pets.

Q: What is the difference between a “calla lily” and an “arum lily“?

A: The terms “calla lily” and “arum lily” are often used interchangeably, but they refer to different plants. “Calla lily” is the common name for *Zantedeschia* species, while “arum lily” is a broader term that can refer to any plant in the *Arum* genus.

Q: How do I care for a “calla lily“?

A: “Calla lilies” prefer bright, indirect light and well-drained soil. Water them regularly, allowing the top inch of soil to dry out between waterings. They benefit from fertilization during the growing season.

Q: Can I grow “calla lilies” indoors?

A: Yes, “calla lilies” can be grown indoors in pots. They require bright, indirect light and good drainage to thrive.

Q: Are there any other plants that resemble “calla lilies“?

A: Yes, several other plants share a similar trumpet-shaped spathe, including *Anthurium*, *Spathiphyllum*, and *Calla palustris*. However, these plants belong to different genera and have their own unique characteristics.