Is Calla Lily Hardy? Discover the Surprising Truth About This Beautiful Plant
What To Know
- If you live in a region with mild winters, your white calla lilies can be planted outdoors and will return year after year with minimal care.
- Yes, it is possible to grow non-hardy calla lilies outdoors in zones colder than 9-10, but it requires a bit more effort.
- If you live in a region with frost, cover your calla lilies with a frost cloth or burlap sack during cold nights.
The calla lily, with its elegant trumpet-shaped flowers and glossy foliage, is a beloved addition to gardens and homes worldwide. But a common question arises for those seeking to cultivate these beauties: is calla lily hardy? The answer, like many things in gardening, is not a simple yes or no.
Understanding Calla Lily Varieties
Calla lilies, scientifically known as Zantedeschia, are actually not true lilies. They belong to the Araceae family, which also includes philodendrons and peace lilies. Within the Zantedeschia genus, there are numerous varieties, each with its own unique characteristics, including hardiness.
The Hardy Calla Lily: Zantedeschia aethiopica
The most common and widely recognized calla lily is the Zantedeschia aethiopica, also known as the white calla lily. This variety is the hardiest of the bunch, capable of withstanding temperatures down to **-10°F (-23°C)** in USDA hardiness zones 8-10.
What does this mean for you? If you live in a region with mild winters, your white calla lilies can be planted outdoors and will return year after year with minimal care. They can even tolerate some frost, though it’s best to provide them with a layer of mulch for extra protection.
The Not-So-Hardy Calla Lilies
While the white calla lily boasts impressive cold tolerance, other calla lily varieties are less hardy. These include:
- Zantedeschia rehmannii: Known for its pink flowers, this variety is hardy only in zones 9-10.
- Zantedeschia elliottiana: This variety produces yellow, orange, or red flowers and is hardy only in zones 9-10.
- Zantedeschia hybrids: There are numerous hybrids available with a wide range of colors, but most are only hardy in zones 9-10.
Can You Grow Non-Hardy Calla Lilies Outdoors?
Yes, it is possible to grow non-hardy calla lilies outdoors in zones colder than 9-10, but it requires a bit more effort. You’ll need to treat them as annuals, planting them in the spring and digging them up in the fall before the first frost. Store the tubers in a cool, dry place over winter and replant them the following spring.
Tips for Growing Calla Lilies in Colder Climates
Here are some tips for successfully growing calla lilies in colder climates:
- Choose a sunny spot: Calla lilies thrive in full sun to partial shade.
- Use well-draining soil: Calla lilies are susceptible to root rot, so ensure the soil drains well.
- Water regularly: Keep the soil consistently moist, but avoid overwatering.
- Fertilize regularly: Feed your calla lilies with a balanced fertilizer every few weeks during the growing season.
- Protect from frost: If you live in a region with frost, cover your calla lilies with a frost cloth or burlap sack during cold nights.
Calla Lily Care: Beyond Hardiness
Hardiness is just one aspect of calla lily care. Here are some additional tips for keeping your calla lilies healthy and blooming:
- Divide the tubers: Every few years, divide the tubers to prevent overcrowding and promote vigorous growth.
- Control pests and diseases: Calla lilies are susceptible to pests like aphids and diseases like leaf spot. Monitor your plants regularly and address any issues promptly.
- Enjoy their beauty: Calla lilies are a stunning addition to any garden or home. Enjoy their beauty and admire their elegance!
The Final Bloom: A Farewell to Our Calla Lily Journey
As our journey with calla lilies comes to a close, we’ve explored the fascinating world of hardiness, variety, and care. While some calla lilies are truly hardy, others require a bit more attention, especially in colder climates. With the right knowledge and a little effort, you can enjoy the captivating beauty of these elegant blooms in your own garden.
Questions You May Have
Q: Can I grow calla lilies in pots?
A: Absolutely! Calla lilies are well-suited for container gardening. Choose a pot with drainage holes and fill it with a well-draining potting mix.
Q: How long does it take for calla lilies to bloom?
A: Calla lilies typically bloom in the spring or early summer, depending on your climate. It usually takes 6-8 weeks for them to flower after planting.
Q: Are calla lilies poisonous?
A: Yes, calla lilies are poisonous to humans and animals if ingested. Keep them out of reach of children and pets.
Q: What are some good companion plants for calla lilies?
A: Calla lilies pair well with other shade-loving plants like ferns, hostas, and begonias.