What’s the difference between lilies and calla lilies?

Lilies and calla lilies may appear similar at a glance, but they actually belong to different plant families and have distinct characteristics. As a gardening and landscaping expert, I can provide you with a detailed explanation of the differences between these two types of flowers.

1. Plant Family:
Lilies are part of the Liliaceae family, while calla lilies belong to the Araceae family. The Liliaceae family includes various species of true lilies, such as Asiatic, Oriental, and Easter lilies. On the other hand, calla lilies are cultivars of the Zantedeschia genus, which is part of the Araceae family, also known as the arum family.

2. Flower Structure:
Lilies and calla lilies have different flower structures. True lilies typically have large, showy flowers with six petals arranged in a radial pattern. They often feature vibrant colors and can grow in various shapes and sizes. Calla lilies, on the other hand, have a unique flower structure called a spathe and a spadix. The spathe is a modified leaf-like structure that wraps around the spadix, which is a spike-like structure. The spathe of a calla lily is usually white or yellow and forms a trumpet-like shape.

3. Growth Habit:
Lilies and calla lilies also differ in their growth habits. True lilies grow from bulbs and have tall, erect stems with leaves arranged in a whorled pattern. They can reach varying heights, depending on the species. Calla lilies, however, grow from rhizomes, which are underground stems that produce roots and shoots. The stems of calla lilies are typically shorter and more compact, with leaves that are heart-shaped and grow directly from the base of the plant.

4. Environmental Requirements:
Lilies and calla lilies have slightly different environmental preferences. True lilies are typically hardy perennials that can tolerate a wide range of climates, depending on the species. They prefer well-draining soil and require moderate sunlight to bloom. Calla lilies, on the other hand, are native to marshy areas and prefer moist soil. They can be grown as perennials in mild climates but may need extra care in colder regions. Calla lilies thrive in partial shade to full sun.

5. Availability and Uses:
True lilies are widely available and are often used in floral arrangements, as cut flowers, or as garden plants. They are popular for their fragrance and beauty. Calla lilies, with their unique flower structure, are also commonly used in floral arrangements, especially for weddings and other special occasions. They are prized for their elegant and sophisticated appearance.

While lilies and calla lilies share some similarities, such as their attractive flowers, they belong to different plant families and have distinct characteristics. True lilies have a radial flower structure, grow from bulbs, and prefer well-draining soil. Calla lilies have a spathe and spadix flower structure, grow from rhizomes, and prefer moist soil. Understanding these differences can help you choose the right plant for your garden or floral arrangements.

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Caroline Bates

Caroline is a Miami-based landscaper who specializes in drought-tolerant landscapes. She is the mother of two young children and also enjoys writing for GreenPacks.org in her spare time. Caroline takes great pride in her work, and loves being able to share her knowledge with others through her writing.