Your Cool Home is supported by its readers. Please assume all links are affiliate links. If you purchase something from one of our links, we make a small commission from Amazon. Thank you!
Calla lilies can be planted in the ground, and they thrive beautifully when given the right conditions.
If you’ve been wondering whether calla lilies can be planted in the ground directly, the answer is a resounding yes for most gardeners.
These elegant bloomers are surprisingly hardy and adaptable, making them a fantastic choice for adding a touch of sophistication to your outdoor garden beds.
Whether you’re a seasoned green thumb or just starting out, planting calla lilies in the ground is a straightforward process that rewards you with stunning, trumpet-shaped flowers.
In this post, we’ll dig into everything you need to know about planting calla lilies in the ground, from timing and soil prep to winter care and common pitfalls.
Let’s get our hands dirty and explore how to make these beauties flourish right in your backyard.
Why Calla Lilies Can Be Planted In The Ground
Calla lilies can be planted in the ground because they are perennial rhizomes that naturally grow in soil, not just in pots.
Unlike some delicate tropicals that demand containers, calla lilies have robust root systems that anchor well into garden earth.
When you plant calla lilies in the ground, they get access to more nutrients and moisture than they would in a confined pot.
This direct soil connection often leads to larger blooms and stronger, taller stems that make a dramatic statement in any landscape.
Here are the key reasons why planting calla lilies in the ground works so well for most homes.
1. They’re Naturally Hardy Rhizomes
Calla lilies can be planted in the ground because they grow from thick, fleshy rhizomes that store energy and water.
These rhizomes act like underground batteries, giving the plant everything it needs to push up through the soil each spring.
In the ground, rhizomes have room to spread and multiply, creating a fuller, more lush display over time.
Potted calla lilies often become root-bound, but in the ground, they can grow freely and produce more flowers per plant.
So if you want a thriving colony of calla lilies, planting them directly in the soil is your best bet.
2. Ground Soil Offers Better Drainage and Nutrition
Calla lilies can be planted in the ground because garden soil, when amended properly, provides excellent drainage.
These plants hate sitting in soggy water, and ground beds naturally wick away excess moisture better than many pots.
Plus, the soil in your garden is packed with organic matter and beneficial microbes that feed the rhizomes slowly.
This steady supply of nutrients is something containers can’t easily replicate without regular fertilizing.
When you plant calla lilies in the ground, you’re giving them a buffet of natural goodness that leads to vigorous growth.
3. Ground Planting Allows for Natural Winter Dormancy
Calla lilies can be planted in the ground in climates where the soil doesn’t freeze solid, and they’ll return year after year.
In USDA zones 8 through 10, you can leave the rhizomes in the ground all winter long, and they’ll go dormant naturally.
This dormant period is essential for the plant’s lifecycle, allowing it to rest and store energy for the next bloom cycle.
If you live in these warmer zones, planting calla lilies in the ground is truly a set-and-forget endeavor.
Even in cooler zones, you can lift the rhizomes in fall and replant them in the ground each spring with great success.
How To Plant Calla Lilies In The Ground Properly
Planting calla lilies in the ground isn’t complicated, but getting the basics right makes all the difference.
The process starts with choosing the perfect spot, as these sun-lovers need at least six hours of direct light daily.
Calla lilies can be planted in the ground in spring, after the last frost has passed and the soil has warmed up.
Here’s a simple step-by-step guide to ensure your calla lilies in the ground take root and thrive.
1. Prep the Soil Before You Plant
Calla lilies can be planted in the ground after you’ve loosened the soil to a depth of about 12 inches.
Mix in plenty of compost or aged manure to enrich the earth and improve drainage.
If your soil is heavy clay, add some coarse sand or perlite to keep it airy and light.
Test the pH, as calla lilies prefer slightly acidic to neutral soil, around 6.0 to 7.0.
Taking these steps ensures that your calla lilies in the ground won’t struggle with waterlogged roots or nutrient deficiencies.
2. Plant at the Right Depth and Spacing
Calla lilies can be planted in the ground with the rhizomes placed about 3 to 4 inches deep.
Make sure the pointy side of the rhizome faces upward, as that’s where the shoots will emerge.
Space each rhizome about 12 to 18 inches apart to give them plenty of room to spread.
Crowding them can lead to poor air circulation, which invites fungal diseases.
After placing them in the ground, gently firm the soil around each rhizome and water thoroughly.
3. Water Consistently But Don’t Drown Them
Calla lilies can be planted in the ground and then require a consistent watering schedule to establish strong roots.
Keep the soil evenly moist but never soggy, especially during the first few weeks after planting.
Once they’re established, calla lilies in the ground are fairly drought-tolerant, but they’ll bloom best with regular water.
A good rule of thumb is to water deeply once a week, and more often during hot, dry spells.
Mulching around the base can help retain moisture and keep the soil cool, which calla lilies love.
When To Plant Calla Lilies In The Ground By Zone
Calla lilies can be planted in the ground at different times depending on your local climate, so getting the timing right is key.
In warm zones (8-10), you can plant them in the ground in early spring or even fall for winter blooms.
In cooler zones (3-7), wait until all danger of frost has passed, typically late spring.
Soil temperature matters, so make sure the ground has warmed to at least 60°F before planting.
If you’re in a cooler zone and want to start early, you can begin indoors and then transplant calla lilies in the ground.
This way, you get a head start on the growing season without risking frost damage to young shoots.
Caring For Calla Lilies Planted In The Ground
Calla lilies can be planted in the ground with a bit of ongoing care to keep them looking their best all season long.
Fertilizing every few weeks with a balanced, water-soluble fertilizer will promote larger and more vibrant blooms.
Deadhead spent flowers regularly to encourage the plant to produce new ones instead of setting seed.
Keep an eye out for common pests like aphids and spider mites, which can be washed off with a strong spray of water.
1. Overwintering for Cold Climates
If you live north of zone 7, calla lilies can be planted in the ground in spring, but they won’t survive a harsh winter outside.
In the fall, after the foliage yellows and dies back, carefully dig up the rhizomes.
Brush off the soil and let them dry for a few days in a warm, airy spot.
Store them in a box filled with peat moss or sawdust in a cool, dark place around 50°F.
Then, you can plant calla lilies in the ground again once spring returns, and they’ll come back just as strong.
2. Dividing for More Blooms
Calla lilies can be planted in the ground for several years, but they’ll eventually get crowded and need dividing.
Every two to three years, in early spring, dig up the rhizome clumps.
Gently separate the larger rhizomes from the smaller offshoots, making sure each piece has a couple of eyes or buds.
Replant these divisions in the ground at the same depth, and you’ll multiply your calla lily collection for free.
So, Can Calla Lilies Be Planted In The Ground?
Yes, calla lilies can be planted in the ground, and they’ll reward you with stunning, long-lasting flowers.
The key is giving them well-drained soil, plenty of sun, and consistent moisture.
Whether you’re in a warm zone leaving them in year-round or a cooler zone lifting them each fall, the results are worth it.
So if you’ve been on the fence, go ahead and plant calla lilies in the ground this season.
With a little care, you’ll have a gorgeous, low-maintenance floral display that returns year after year.
Happy planting, and enjoy the elegance these beauties bring to your garden beds.