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You can grow calla lilies from bulbs successfully with just a little patience and the right planting technique.
Growing calla lilies from bulbs is one of the most rewarding projects for any gardener, whether you’re working with a garden bed or a simple patio pot.
If you’ve been asking how to grow calla lilies from bulbs, the good news is that it’s a straightforward process that even beginners can master.
These elegant flowers aren’t actually true lilies, but their trumpet-shaped blooms and glossy foliage make them a showstopper anywhere you plant them.
In this post, we’ll walk you through every step of growing calla lilies from bulbs, from choosing the right rhizomes to caring for them as they bloom.
Let’s dig in.
How to Grow Calla Lilies From Bulbs: The Basics
Learning how to grow calla lilies from bulbs starts with understanding that these “bulbs” are technically rhizomes, which are thick, fleshy roots that store energy.
You can grow calla lilies from bulbs indoors or outdoors, and the process remains largely the same.
The key to success is timing, soil, and water, so let’s break down each element.
1. Choose the Right Calla Lily Bulbs
When you decide to grow calla lilies from bulbs, always start with firm, plump rhizomes that feel heavy for their size.
Avoid any that look shriveled, moldy, or have soft spots, as these are signs of poor storage or disease.
You can find calla lily bulbs at garden centers in early spring or order them online from reputable nurseries.
If you want to grow calla lilies from bulbs in a range of colors, look for varieties like ‘Zantedeschia’ hybrids that offer white, pink, yellow, or deep purple blooms.
The healthier your starting bulbs, the easier it will be to grow calla lilies from bulbs successfully.
2. Pick the Perfect Planting Spot
To grow calla lilies from bulbs, you need a location that gets full sun to partial shade, with at least six hours of sunlight per day.
In hotter climates, afternoon shade is actually better because it protects the foliage from scorching.
Calla lilies love moisture, so choose a spot with rich, well-draining soil that doesn’t stay waterlogged.
If you’re growing them in containers, make sure your pot has drainage holes at the bottom.
Getting this spot right is a huge part of how to grow calla lilies from bulbs without any headaches later.
3. Plant at the Right Depth and Time
The timing of when you grow calla lilies from bulbs depends on your climate and whether you’re starting them indoors.
In most regions, you should plant calla lily bulbs in spring after the last frost has passed.
If you want an earlier start, you can grow calla lilies from bulbs in pots indoors about 8 weeks before the last frost date.
When planting, place each rhizome about 3 to 4 inches deep with the pointed side facing up.
Space them around 12 inches apart so they have room to spread and breathe.
Water thoroughly after planting to settle the soil around the bulbs.
This simple depth and timing rule is your blueprint for learning how to grow calla lilies from bulbs like a pro.
4. Water and Fertilize Consistently
If you want to grow calla lilies from bulbs that bloom abundantly, you must keep the soil consistently moist but not soggy.
During the growing season, water your calla lilies whenever the top inch of soil feels dry to the touch.
Overwatering can cause the rhizomes to rot, so always err on the side of slightly drier rather than wetter.
Feed your plants with a balanced liquid fertilizer every 4 to 6 weeks while they are actively growing.
This regular feeding gives them the nutrients they need to produce those iconic flowers.
Remember, you can grow calla lilies from bulbs even in poor soil, but you’ll get much better results if you amend the soil with compost before planting.
Caring for Calla Lilies as They Grow
Once you know how to grow calla lilies from bulbs, the next step is providing ongoing care to keep them thriving.
1. Mulch to Retain Moisture
Applying a layer of organic mulch around your calla lilies helps retain soil moisture and keeps the roots cool.
This is especially important if you’re growing them in a region with hot summers.
Mulch also suppresses weeds, which means less competition for water and nutrients.
You can use shredded bark, straw, or even grass clippings as mulch.
That little extra layer goes a long way when you grow calla lilies from bulbs in warmer zones.
2. Deadhead Spent Flowers
To keep your plants looking tidy and encourage more blooms, remove faded flowers as soon as they begin to wilt.
Use clean scissors or pruning shears to snip the stem right at the base.
Deadheading redirects the plant’s energy back into producing new buds rather than setting seeds.
It’s a simple habit that makes a big difference in how long your calla lilies keep flowering.
When you grow calla lilies from bulbs, expect blooms to appear about 60 to 90 days after planting.
3. Watch for Pests and Diseases
Even when you grow calla lilies from bulbs perfectly, pests like aphids and spider mites can occasionally show up.
Check the undersides of leaves regularly and rinse off small infestations with a strong spray of water.
If mites persist, treat the plant with insecticidal soap.
Overwatering is the biggest disease risk since it promotes root rot and fungal issues.
Ensure good air circulation around your plants by not crowding them too closely together.
By staying vigilant, you’ll find that growing calla lilies from bulbs is a fairly trouble-free experience.
Overwintering Calla Lily Bulbs
If you live in a colder climate, you’ll need to know how to grow calla lilies from bulbs that survive the winter.
Calla lilies are hardy in zones 8 through 10, but gardeners in cooler zones must dig them up in the fall.
1. Dig and Dry the Bulbs
After the foliage dies back in late autumn, carefully lift the bulbs out of the ground with a garden fork.
Shake off excess soil and let the bulbs dry in a warm, airy room for a few days.
Once dry, remove any remaining leaves and trim the roots.
You can grow calla lilies from bulbs again next year by storing these dried rhizomes properly.
2. Store in a Cool, Dark Place
Place your dried calla lily bulbs in a paper bag or a box filled with peat moss or sawdust.
Keep them in a location that stays around 50°F (10°C), like a basement or garage.
Check on them monthly and remove any that have started to rot or mold.
Replant them in spring when the soil warms up.
This storage step closes the loop on how to grow calla lilies from bulbs year after year.
So, How Do You Grow Calla Lilies from Bulbs?
You can grow calla lilies from bulbs by planting firm rhizomes in well-draining soil at the right depth and keeping them consistently watered.
The process is simple, but it requires attention to a few key details like sunlight, moisture, and timing.
From choosing healthy bulbs to overwintering them, each step plays a role in your success.
Hope this guide has clarified exactly how to grow calla lilies from bulbs so you can enjoy these gorgeous flowers in your own garden.
Now go ahead and get those bulbs in the ground, your summer display will thank you.