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How do you grow calla lilies from seed?
Growing calla lilies from seed is a rewarding but slow process that requires patience, proper care, and attention to detail.
While many gardeners prefer growing calla lilies from rhizomes or bulbs for quicker blooms, starting calla lilies from seed allows you to propagate new plants and enjoy the fascinating germination and growth stages.
In this post, we’ll walk you through exactly how to grow calla lilies from seed, including collecting or purchasing seeds, germinating them successfully, caring for seedlings, and eventually planting them to bloom in your garden.
Let’s dive into the step-by-step process of growing calla lilies from seed and help your calla lilies thrive from the very beginning.
Why Grow Calla Lilies From Seed?
Growing calla lilies from seed is a great way to propagate your favorite varieties and even experiment with new ones.
1. Genetic Variety and Experimentation
Unlike bulbs or rhizomes that produce clones of the parent plant, seeds can create genetic diversity.
This means you might grow calla lilies with different colors or patterns, making seed propagation exciting for enthusiasts.
2. Cost-Effective Option
Calla lily seeds are generally cheaper than buying mature bulbs, especially if you want to grow multiple plants.
Starting from seed lets you expand your calla lily collection affordably.
3. Satisfaction in Growing From Scratch
Watching your calla lilies grow from a tiny seed to a blooming flower is deeply satisfying.
It allows you to learn the plant’s growth process intimately and gain more gardening experience.
How to Start Growing Calla Lilies From Seed
The key to growing calla lilies from seed is proper seed preparation, planting, and germination conditions.
1. Obtaining Calla Lily Seeds
You can buy calla lily seeds online or at garden centers, or collect seeds from existing plants once they produce seed pods.
If harvesting seeds yourself, wait until the seed pods turn brown and dry.
Remove the seeds carefully and clean off any residue before planting.
2. Preparing the Seeds for Germination
Calla lily seeds have a hard outer coating, so soaking them in warm water for 24 hours softens them and encourages quicker germination.
After soaking, gently nick or rub the seeds with fine sandpaper to help the seed coat absorb moisture better.
3. Choosing the Right Planting Medium
Use a light, well-draining seed-starting mix or a mix of peat moss and perlite.
Heavy soils or garden soil should be avoided to prevent damping off and poor root development.
Fill seed trays or small pots with the mix, and moisten it well before planting calla lily seeds.
Germinating Calla Lily Seeds Successfully
The germination stage is critical in growing calla lilies from seed, as seeds can take up to 3 weeks or more to sprout.
1. Planting Depth and Spacing
Plant the seeds about 1/4 inch (6 mm) deep in the soil.
Space multiple seeds at least 2 inches apart to avoid overcrowding when sprouts emerge.
2. Temperature and Light for Germination
Calla lily seeds germinate best in warm temperatures between 70-75°F (21-24°C).
Place your seed trays or pots in a warm spot with bright, indirect light.
Avoid direct sunlight that can overheat or dry out the seedlings.
3. Maintaining Moisture
Keep the soil consistently moist but not soggy during germination.
Covering the seed trays with clear plastic or a humidity dome helps retain moisture and warmth.
Ventilate daily to prevent mold growth.
Caring for Calla Lily Seedlings
Once your seeds sprout, caring for your calla lily seedlings correctly will ensure healthy plants ready for transplanting.
1. Light Requirements
Seedlings need plenty of bright, indirect light—at least 12-14 hours a day.
If natural light is insufficient, consider using grow lights placed a few inches above the seedlings.
2. Watering and Feeding
Water the seedlings regularly to keep the soil moist but avoid waterlogging.
After 4-6 weeks, start feeding them with a diluted balanced fertilizer every 2-3 weeks to support healthy growth.
3. Thinning and Transplanting
If multiple seeds were planted close together, thin to the strongest seedlings by snipping weaker ones at soil level.
When seedlings develop 2-3 true leaves and are sturdy enough, transplant them into larger pots with rich, well-draining soil.
4. Hardening Off Before Outdoor Planting
Before planting calla lilies outdoors, harden off seedlings by gradually exposing them to outdoor conditions over 7-10 days.
Start with a few hours in shade and slowly increase sun exposure and time outside daily to reduce transplant shock.
Planting Calla Lilies From Seedlings to Garden
Transplanting your calla lily seedlings into the garden or containers is the final step in growing calla lilies from seed.
1. Ideal Planting Time
Wait to plant calla lily seedlings outdoors until all danger of frost has passed and soil temperatures are consistently above 60°F (15°C).
This usually means late spring or early summer, depending on your region.
2. Site Selection
Choose a location with well-draining soil and partial to full sun exposure.
Calla lilies thrive in moist, fertile soil but can suffer if waterlogged, so avoid heavy clay or soggy areas.
3. Spacing and Planting Depth
Plant seedlings 12-18 inches apart to allow enough space for mature growth.
Plant them at the same depth they were growing in pots or slightly deeper to secure roots.
4. Ongoing Care
Water calla lilies regularly to keep soil moist, especially during dry spells.
Mulching helps retain moisture and keeps roots cool.
Fertilize monthly with a balanced liquid fertilizer during the growing season to encourage blooming.
5. Patience for Blooming
Calla lilies grown from seed typically take 1-2 years to produce flowers because they need to develop mature rhizomes first.
Don’t worry if you don’t see blooms the first season—consistent care will reward you with blossoms eventually.
So, How Do You Grow Calla Lilies From Seed?
Growing calla lilies from seed starts with obtaining quality seeds, soaking and preparing them properly, and planting them in the right conditions.
Maintaining warm temperatures and consistent moisture is essential for germination, while bright indirect light supports healthy seedling growth.
Once the seedlings are strong enough, gradually transplant them outdoors in well-drained soil with adequate sun and moisture.
Patience is crucial because calla lilies grown from seed typically take longer to bloom than those grown from rhizomes or bulbs.
With the right care and attention, growing calla lilies from seed can be a fun and rewarding gardening project that fills your space with elegant flowers.
Whether you’re a beginner or an experienced gardener, following these steps on how to grow calla lilies from seed will help ensure your success and a beautiful calla lily display in your garden or containers.