Calla Lily Seeds: A Comprehensive Guide to Harvesting, Storing, and Planting

Introduction

Calla lilies (Zantedeschia spp.) are captivating plants known for their elegant trumpet-shaped flowers and lush green foliage. While typically propagated through rhizomes, it is also possible to grow calla lilies from seeds. This process requires patience and care, but it can be a rewarding experience for gardeners. In this comprehensive guide, we will delve into the world of calla lily seeds, covering everything from harvesting and storing to planting and germination.

Harvesting Calla Lily Seeds

Timing

Calla lily seeds mature in late summer or early fall, typically 6-8 weeks after flowering.

Identifying Mature Seeds

* Seed pods will turn brown and papery.
* Seeds inside the pods will be black or dark brown.
* If you shake the pod, the seeds should rattle freely.

Harvesting Method

* Wear gloves to protect against the sharp thorns on the seed pods.
* Carefully cut the pod from the plant with a sharp knife.
* Place the pods in a container lined with paper towels or newspaper.
* Allow the pods to dry in a warm, well-ventilated area for several days.

Storing Calla Lily Seeds

* Once the pods are completely dry, remove the seeds from the pods.
* Store the seeds in a cool, dry place with good ventilation.
* Paper envelopes or sealed plastic bags are suitable containers.
* Label the seeds with the variety and date of harvest.
* Calla lily seeds can remain viable for up to five years under proper storage conditions.

Planting Calla Lily Seeds

Planting Time

* Start seeds indoors 8-10 weeks before the last spring frost.
* Outdoor sowing can be done in spring after the soil has warmed up.

Soil Requirements

* Calla lilies prefer well-drained, fertile soil with a slightly acidic pH (around 6.0-6.5).
* Amend heavy soils with compost or sand to improve drainage.

Planting Method

* Indoors: Sow seeds on the surface of a moist seed starting mix. Lightly press the seeds into the soil but do not cover them.
* Outdoors: Sow seeds 1/4 inch deep in prepared soil. Space seeds 4-6 inches apart.
* Keep the soil consistently moist but not waterlogged.
* Cover the seed containers or planting area with plastic wrap to maintain humidity.

Germination and Care

Germination Time

* Calla lily seeds can take anywhere from 14 to 60 days to germinate.
* Germination is more successful when temperatures are between 65-75°F (18-24°C).

Seedling Care

* Once seedlings emerge, gradually remove the plastic wrap to acclimatize them to drier conditions.
* Water seedlings regularly, allowing the soil to dry out slightly between watering.
* Avoid overwatering as this can lead to damping-off disease.
* Fertilize seedlings with a balanced liquid fertilizer once a month.

Transplanting

* When seedlings have developed their first true leaves, they can be transplanted into individual pots or the garden.
* Harden off seedlings before transplanting by gradually exposing them to outdoor conditions over a week or two.
* Plant calla lilies in a location that receives full sun to partial shade.
* Space plants 12-18 inches apart.

Troubleshooting

Seeds Not Germinating

* Ensure that seeds are viable and stored properly.
* Check soil temperature and moisture levels.
* Avoid overwatering or allowing the soil to dry out completely.

Seedlings Damping Off

* Overwatering can cause damping-off disease.
* Use well-draining soil and avoid overcrowding seedlings.
* Treat with a fungicide if necessary.

Plant Growth Stunted

* Lack of nutrients can stunt plant growth.
* Fertilize plants regularly.
* Ensure plants are receiving adequate sunlight and water.

Conclusion

Growing calla lilies from seeds requires patience and attention to detail. By following the steps outlined in this guide, you can successfully harvest, store, and plant calla lily seeds. With proper care, you will be rewarded with beautiful blooms that add a touch of elegance to your garden.