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You can grow princess lilies successfully if you give them the right conditions from the start.
These stunning flowers—also known as Alstroemeria or Peruvian lilies—are surprisingly easy to grow princess lilies once you understand their needs.
If you’ve been asking how to grow princess lilies, you’ll be happy to know they’re forgiving, long-lasting, and reward you with vibrant blooms.
In this post, we’ll cover how to grow princess lilies step by step, from planting to caring for them year-round.
Let’s dig in and help you grow princess lilies that will make your garden the talk of the neighborhood.
Why You Can Grow Princess Lilies With Confidence
You can grow princess lilies in most climates, and the process is much simpler than many gardeners think.
These hardy perennials thrive in zones 7 through 10, but you can also grow princess lilies in containers if you live in colder regions.
Their tuberous roots store energy, which means once established, they come back each year with minimal fuss.
Let’s break down the essentials so you know exactly how to grow princess lilies no matter where you are.
1. Start With Quality Tubers or Plants
The first step to grow princess lilies is sourcing healthy tubers from a reputable nursery or online supplier.
Look for tubers that are firm, plump, and free from mold or soft spots.
If you’re buying potted plants, choose ones with rich green foliage and no yellowing leaves.
Starting with quality stock makes it much easier to grow princess lilies successfully.
2. Choose the Right Location
To grow princess lilies, pick a spot that gets full morning sun but some afternoon shade, especially in hot climates.
These flowers prefer around six hours of sunlight daily, but too much intense heat can stress them.
Good air circulation is also key, so avoid crowding them against walls or other dense plants.
When you grow princess lilies in the right spot, they’ll reward you with stronger stems and more blooms.
3. Prepare Well-Draining Soil
Princess lilies hate soggy roots, so soil preparation is non-negotiable when you grow princess lilies.
Aim for loose, loamy soil with a slightly acidic to neutral pH between 6.0 and 7.0.
Mix in compost or aged manure to improve drainage and add nutrients.
If you’re growing in containers, use a high-quality potting mix with perlite or sand for extra drainage.
Proper soil makes it a breeze to grow princess lilies without worrying about root rot.
When to Plant Princess Lilies for Best Results
Knowing when to plant is just as important as knowing how to grow princess lilies.
The ideal time is early spring, after the last frost has passed and the soil has begun to warm.
In mild winter climates, you can also plant in fall to get a head start on spring growth.
Soil temperature should be at least 55°F (13°C) before you set tubers in the ground.
If you time it right, you’ll grow princess lilies that bloom continuously from early summer through fall.
Planting Depth and Spacing
Plant each tuber about 6 to 8 inches deep, with the pointed side facing upward.
Space them 12 to 18 inches apart to allow room for their spreading root systems.
When you grow princess lilies in containers, use a pot that’s at least 12 inches deep and wide.
Water thoroughly after planting to settle the soil around the tubers.
This initial watering kickstarts the growth process and helps you grow princess lilies faster.
Caring for Your Princess Lilies Throughout the Season
Once they’re in the ground, ongoing care is what helps you grow princess lilies that flourish.
Your main jobs are watering, feeding, and occasional grooming.
Let’s walk through each so you can grow princess lilies like a pro.
1. Watering: Keep It Consistent but Not Soggy
Water your princess lilies deeply once or twice a week, allowing the top inch of soil to dry between waterings.
During hot, dry spells, you may need to water more frequently to grow princess lilies without stress.
Use mulch around the base to retain moisture and keep roots cool.
Avoid overhead watering, which can lead to fungal issues on the foliage.
Consistent moisture is one of the best secrets to grow princess lilies with vibrant blooms.
2. Fertilizing for Bigger, Brighter Blooms
Feed your princess lilies every 4 to 6 weeks during the growing season with a balanced, slow-release fertilizer.
Look for a ratio like 10-10-10 or 5-10-10, where phosphorus promotes flowering.
Stop fertilizing in late summer to let the plant prepare for dormancy.
When you grow princess lilies with proper feeding, you’ll notice more flower stems and richer colors.
3. Deadheading and Pruning
Remove spent blooms by cutting the entire stem at the base to encourage new growth.
Don’t just pinch off the flower head—princess lilies respond better to full stem removal.
At the end of the season, cut foliage back to the ground after it yellows naturally.
This tidy habit helps you grow princess lilies that come back stronger next year.
4. Supporting Tall Stems
As your plants grow, some varieties may flop under the weight of their blooms.
Use stakes or grow-through rings early in the season to provide gentle support.
Insert stakes at planting time to avoid damaging the roots later.
When you grow princess lilies with support in place, you’ll enjoy upright, picture-perfect flowers.
Overwintering and Dividing Princess Lilies
If you want to grow princess lilies for years, you’ll need to protect them through winter.
In zones 7 and warmer, add a thick layer of mulch for insulation.
In colder zones, lift the tubers after the first frost and store them in peat moss or sawdust.
Keep stored tubers in a cool, dark place around 40–50°F (4–10°C).
Then replant in spring to continue to grow princess lilies successfully.
How to Divide Princess Lilies
Every 3 to 4 years, dig up the clumps in early spring to divide them.
Gently separate the tuberous roots, making sure each division has a few healthy shoots.
Replant divisions immediately at the same depth used for new tubers.
This not only rejuvenates your plants but also gives you more opportunities to grow princess lilies in new areas.
So, How to Grow Princess Lilies Successfully?
You can grow princess lilies successfully by providing full sun to partial shade, well-draining soil, and consistent moisture.
Start with healthy tubers, plant them at the right depth, and fertilize regularly during the growing season.
Protect them in winter or lift tubers in cold climates, and divide every few years for continuous vigor.
Hope this guide has answered your questions about how to grow princess lilies with confidence.
Now you’re ready to grow princess lilies that will bloom beautifully and brighten your garden for seasons to come.