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Calla lilies are popular for their elegant appearance and are often used in floral arrangements and decorations. Proper storage after harvest is essential to maintain their freshness and extend their lifespan. In this article, we will explore the best practices for storing calla lilies once they are harvested.
Understanding Calla Lily Post-Harvest Needs
Calla lilies are sensitive to temperature, humidity, and light. Proper handling immediately after harvest can significantly affect their longevity. Knowing how to care for them during storage helps preserve their vibrant appearance and prevents premature wilting or decay.
Immediate Post-Harvest Handling
Once harvested, calla lilies should be handled carefully to avoid damaging the stems and flowers. Remove any damaged or wilted leaves, and trim the stems at an angle to facilitate water uptake. This initial step is crucial for prolonging their freshness during storage.
Cleaning and Preparation
Rinse the flowers gently with clean, cool water to remove dirt or debris. Use a sharp knife or scissors to cut the stems, ensuring a clean cut that allows for better water absorption. Avoid crushing or tearing the stems, as this can impede water uptake and lead to early spoilage.
Optimal Storage Conditions
Calla lilies require specific environmental conditions to stay fresh after harvest. The ideal storage temperature is between 2°C and 4°C (36°F – 39°F). Maintaining high humidity levels, around 90-95%, helps prevent the flowers from drying out. Keep the flowers in a cool, dark place away from direct sunlight and drafts.
Choosing the Right Container
Use clean, water-filled containers or buckets to keep the stems hydrated. Ensure that the water covers at least the bottom few inches of the stems. Changing the water regularly prevents bacterial growth and keeps the flowers looking fresh longer.
Using Floral Preservatives
Adding floral preservatives to the water can extend the lifespan of calla lilies. These preservatives provide essential nutrients and inhibit bacterial growth. Follow the manufacturer’s instructions for proper mixing and use.
Handling and Transportation
When transporting calla lilies, keep them in a cool, moist environment. Avoid exposing them to direct sunlight or high temperatures. Use protective coverings if necessary to prevent physical damage during transit.
Long-Term Storage Options
For long-term storage, calla lilies can be stored in refrigerated conditions for up to two weeks. Wrap the flowers in plastic or place them in sealed containers with water to maintain humidity. Ensure the storage area remains cool and away from ethylene-producing fruits, which can accelerate aging.
Freezing and Drying
While not common, some growers dry or freeze calla lilies for preservation. Drying involves hanging the flowers in a well-ventilated area until completely dried. Freezing is generally not recommended for fresh flowers but can be used for preserved or processed calla lilies.
Summary of Best Practices
- Handle flowers gently and trim stems properly immediately after harvest.
- Maintain storage temperatures between 2°C and 4°C.
- Keep humidity high and avoid direct sunlight.
- Use clean containers with water and floral preservatives.
- Transport in cool, protected conditions.
- For long-term storage, refrigerate or dry flowers carefully.
By following these best practices, growers and florists can ensure that calla lilies remain vibrant and beautiful for as long as possible after harvest. Proper storage not only enhances the visual appeal but also reduces waste and increases the value of floral arrangements.