Outdoor

Are Calla Lilies Outdoor Plants? A Complete Guide to Growing Calla Lilies Outdoors

are calla lilies outdoor plants

Calla lilies are known for their elegant trumpet-shaped blooms and rich symbolism. Often associated with beauty, rebirth, and purity, these stunning flowers are popular in gardens, floral arrangements, and even weddings. But one question that often arises for gardening enthusiasts is: Are calla lilies outdoor plants?

In this guide, we’ll explore whether calla lilies thrive outdoors, what conditions they need to grow, and how you can successfully care for them in your garden. Whether you’re a beginner or a seasoned gardener, this article will help you unlock the full potential of this versatile and graceful plant.

What Are Calla Lilies?

A Quick Overview

Despite their name, calla lilies (Zantedeschia) are not true lilies. Native to southern Africa, they belong to the Araceae family and thrive in warm, humid climates. These perennials are loved for their bold, colorful flowers and lush green foliage.

Popular Calla Lily Varieties

  • Zantedeschia aethiopica – Classic white blooms, larger plants
  • Zantedeschia rehmannii – Pink to lavender hues, compact size
  • Zantedeschia elliottiana – Bright yellow flowers, spotted leaves

Can Calla Lilies Be Grown Outdoors?

Yes! Calla lilies can be grown outdoors—and quite successfully, too—provided the right conditions are met. These plants are adaptable and can be used in various landscape settings, including garden beds, borders, and containers.

Ideal Outdoor Growing Zones

Calla lilies are best suited for USDA Hardiness Zones 8-10, where temperatures remain mild throughout the year. In these regions, calla lilies can be grown as perennials, coming back year after year.

If you live in cooler zones (Zone 7 and below), you can still grow calla lilies outdoors—but as annuals or by digging up and storing the bulbs during winter.

How to Grow Calla Lilies Outdoors

1. Choosing the Right Spot

Calla lilies love:

  • Full sun to partial shade
  • Well-drained, rich soil
  • Sheltered areas that protect from strong winds

If you’re planting in a hot climate, light afternoon shade can prevent the flowers from wilting.

2. Planting Instructions

  • Plant bulbs in spring, after the last frost
  • Space bulbs 12–18 inches apart
  • Plant 3–4 inches deep, with the eyes facing upward
  • Water thoroughly after planting

3. Watering and Fertilizing

  • Keep the soil consistently moist, especially during blooming season
  • Avoid soggy conditions to prevent root rot
  • Use a balanced liquid fertilizer every few weeks for vibrant blooms

Caring for Calla Lilies Outdoors

Maintenance Tips

  • Deadhead spent flowers to encourage continuous blooming
  • Trim yellowing leaves as needed
  • Mulch around the base to retain moisture and suppress weeds

Pest and Disease Control

While calla lilies are generally low-maintenance, watch out for:

  • Aphids and spider mites
  • Fungal diseases in overly wet conditions
  • Slugs and snails, especially in humid climates

Use natural insecticidal soap or neem oil as needed.

Growing Calla Lilies in Containers Outdoors

If you’re short on garden space, calla lilies also thrive in containers. This gives you more control over soil quality and makes it easier to move them indoors if needed.

Container tips:

  • Use a large pot with good drainage
  • Fill with high-quality potting mix
  • Water regularly and place in a sunny spot

Overwintering Calla Lilies in Cold Climates

If you live in a region with harsh winters, you’ll need to dig up your calla lily rhizomes in the fall:

  1. Cut back foliage once it dies down after the first frost.
  2. Carefully dig up the rhizomes and let them dry for a few days.
  3. Store in a cool, dry place (40–50°F) in peat moss or sawdust.
  4. Replant in spring for another season of beauty!

Are Calla Lilies Invasive Outdoors?

Calla lilies are not typically invasive, but in some warmer regions with wet conditions, they can spread quickly. It’s a good idea to:

  • Monitor growth, especially near water sources
  • Divide clumps every few years to maintain size and shape

Final Thoughts: Are Calla Lilies Right for Your Outdoor Garden?

If you’re looking for a flower that combines elegance, durability, and versatility, calla lilies make an excellent choice for outdoor gardening. With the right care, they can thrive in garden beds or containers, providing striking blooms from late spring through summer.

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