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You can absolutely grow calla lilies from seed, and it’s a wonderfully rewarding way to fill your garden with these elegant blooms.
Growing calla lilies from seed takes a bit of patience, but the process is straightforward once you understand what these seeds need to germinate and thrive.
Unlike planting mature bulbs, starting calla lilies from seed lets you watch the entire life cycle unfold, from a tiny seed to a stunning flowering plant.
In this post, we’ll walk through every step of how to grow calla lilies from seed, including prepping the seeds, sowing them indoors, and caring for your seedlings until they’re ready for the garden.
Let’s dig into the fascinating journey of growing calla lilies from seed.
Why You Should Grow Calla Lilies From Seed
Growing calla lilies from seed isn’t as complicated as you might think, and it comes with some unique perks.
When you grow calla lilies from seed, you have the chance to produce varieties that aren’t often available as bulbs in local nurseries.
Seeds give you access to a wider range of colors and hybrid types, making your garden truly one-of-a-kind.
Plus, growing calla lilies from seed is more budget-friendly if you want a large planting, since a packet of seeds costs far less than dozens of bulbs.
It’s also a deeply satisfying experience to say you started your calla lilies from seed and nurtured them into full bloom.
1. Understanding Calla Lily Seeds
Before you start, it helps to know what calla lily seeds look like and how they behave.
Calla lily seeds are small, round, and usually a golden or dark brown color, similar to tiny peppercorns.
Each seed carries the genetic potential for a new plant, but they have a hard outer coat that needs special attention.
When you grow calla lilies from seed, you’ll need to mimic the natural cycles that break dormancy and trigger germination.
2. The Patience Factor in Growing Calla Lilies From Seed
One thing to know upfront is that growing calla lilies from seed requires more patience than planting bulbs.
Seeds can take anywhere from a few weeks to a few months to germinate, depending on conditions.
After germination, your seedlings will need a full growing season to develop the rhizomes (underground bulbs) that produce flowers.
In many cases, calla lilies grown from seed won’t bloom until their second year, which is normal and expected.
But the wait is absolutely worth it when those first elegant, trumpet-shaped flowers appear.
Step-By-Step Guide To Grow Calla Lilies From Seed
Now that you’re excited about the process, let’s get into the practical steps for growing calla lilies from seed successfully.
1. Soak the Seeds to Soften the Coat
The first step in growing calla lilies from seed is to soak your seeds in warm water for 24 to 48 hours.
This soaking step is crucial because it softens the hard outer shell and signals the seed that it’s time to wake up.
Change the water every 12 hours to keep it fresh and prevent any bacterial growth.
After soaking, you’ll notice the seeds plump up slightly, which is a great sign for germination.
2. Use a Well-Draining Seed Starting Mix
Choosing the right soil is key when you grow calla lilies from seed, as they hate soggy conditions.
Fill small pots or seed trays with a light, well-draining mix, like a combination of peat moss and perlite.
Moisten the mix before sowing so it’s damp but not dripping wet.
Calla lily seeds need consistent moisture to germinate, but they’ll rot if the soil stays waterlogged.
3. Sow the Seeds at the Right Depth
Place each soaked seed on top of the soil and gently press it down, then cover with a thin layer of mix about ¼ inch deep.
Don’t bury the seeds too deep, as they need some light exposure to trigger germination.
Space seeds about an inch apart in trays, so each seedling has room to grow without competing for nutrients.
Spritz the top of the soil with water to settle it around the seeds.
4. Provide Warmth and Bright, Indirect Light
Calla lilies from seed love warm conditions, so aim for a consistent temperature between 70°F and 75°F.
Place your trays in a bright spot with indirect sunlight, like a sunny windowsill or under a grow light.
Avoid direct, harsh sunlight, which can dry out the soil and overheat those delicate seeds.
You can also use a heat mat under the tray to maintain steady warmth, which speeds up germination.
5. Keep the Soil Evenly Moist
For the next few weeks, your main job is to keep the soil evenly moist while growing calla lilies from seed.
Check your trays daily and mist the surface whenever it feels dry to the touch.
Covering the trays with a clear plastic dome or plastic wrap helps trap humidity and maintain moisture.
Once you see the first green sprouts emerging, remove the cover to allow fresh air circulation.
Caring For Your Calla Lily Seedlings
Once your calla lily seeds sprout, the real fun begins as you nurture them into strong, healthy plants.
1. Transplanting Seedlings to Bigger Pots
When your seedlings have at least two sets of true leaves, they’re ready for their own individual pots.
Gently lift each seedling with a small spoon or fork and transplant into a 4-inch pot filled with potting soil.
Water them well after transplanting, and keep them in the same bright, warm spot.
This step gives the roots room to spread and develop strong rhizomes for future blooms.
2. Harden Off Before Moving Outdoors
Before you move your calla lilies from seed to the garden, you’ll need to harden them off.
About two weeks before the last frost date, start taking your seedlings outside for a few hours each day.
Gradually increase their outdoor time over the week, exposing them to more sun and wind.
This process helps the young plants adjust to outdoor conditions without shock.
3. Plant Outdoors in the Right Spot
Calla lilies thrive in full sun to partial shade, with rich, well-draining soil.
When planting your seedlings outdoors, space them at least 12 inches apart to allow for airflow.
Dig a hole slightly larger than the root ball, place the seedling in, and backfill with soil.
Water deeply after planting, and add a layer of mulch to retain moisture and keep roots cool.
Common Mistakes When Growing Calla Lilies From Seed
Even experienced gardeners can stumble when growing calla lilies from seed, so watch out for these pitfalls.
1. Overwatering the Seeds
One of the biggest mistakes is overwatering, which leads to damping-off disease and rot.
Remember that the soil should be moist, not soaked, and always ensure your pots have drainage holes.
If the soil feels sticky or water pools on top, you’re giving them too much water.
2. Skipping the Soak Step
Never skip the soaking step, as it’s essential for breaking dormancy in calla lily seeds.
Dry seeds planted directly in soil can take months to germinate, if they germinate at all.
The soak mimics the rainy season in their native habitat, which naturally triggers growth.
3. Moving Seedlings Out Too Early
Calla lilies are tropical plants, so they can’t handle frost at all.
Wait until all danger of frost has passed before transplanting your seedlings outdoors.
Even a single chilly night can kill young plants, so check your local frost dates carefully.
When in doubt, keep them indoors a bit longer, as they’ll grow happily in pots for a while.
So, How Do You Grow Calla Lilies From Seed?
You can definitely grow calla lilies from seed, and it’s a process that rewards patience with spectacular results.
Growing calla lilies from seed begins with soaking the seeds, sowing them in moist, well-draining soil, and providing warmth and light.
From there, you’ll nurture the seedlings through transplanting, hardening off, and finally planting them outdoors.
While you won’t see blooms the first year, the second year will bring gorgeous calla lilies that you started entirely from seed.
If you follow these steps and avoid the common mistakes, you’ll be amazed at how easy it is to grow calla lilies from seed.
So gather your seeds, prep your pots, and enjoy the journey of growing calla lilies from seed in your own garden.