How to store freesia bulbs?

To effectively store freesia bulbs (more accurately called corms), they must be kept dry at a specific warm temperature range to ensure their viability for future planting seasons.

Understanding Freesia Corm Storage

Proper storage of freesia corms during their dormant period is essential for successful re-flowering. Unlike some other bulbs, freesias require a warm, dry environment for optimal dormancy.

Key Storage Conditions for Freesia Corms

Based on horticultural guidelines, the specific conditions for storing freesia corms are critical:

• Temperature: Freesia corms or containers should be stored dry at 75 to 85°F (25-30°C). This warm temperature range is vital for keeping the corms dormant without allowing them to rot or sprout prematurely.
• Dryness: The emphasis on "dry" storage prevents fungal diseases and rot, which are common issues in damp or humid conditions.
• Containers: Storing in "containers" implies using breathable options that allow for air circulation while protecting the corms.

Practical Steps for Storing Freesia Corms

To achieve the recommended storage conditions, consider these practical steps:

• Harvesting: Once freesia foliage has yellowed and died back naturally (typically in late summer or fall), carefully dig up the corms.
• Cleaning: Gently brush off any excess soil from the corms. Avoid washing them, as moisture can lead to rot.
• Curing: Before long-term storage, it's beneficial to cure the corms for a few days to a week. Spread them in a single layer in a warm, dry, well-ventilated area away from direct sunlight. This helps to fully dry the corms and toughen their outer skin, preparing them for storage.
• Storage Medium & Container: Place the thoroughly dried corms in a breathable container. Excellent options include:
  • Mesh bags
  • Paper bags
  • Cardboard boxes
  • Trays lined with newspaper
  • You can layer them with dry peat moss, vermiculite, or sawdust to absorb any residual moisture and provide insulation, though ensuring dryness is the primary goal.
• Location: Store the containers in a location that consistently maintains the specified temperature range of 75 to 85°F (25-30°C). Examples could include a warm closet, a utility room, or a heated basement, provided humidity is low.

Why Proper Storage Temperature Matters

The precise temperature range of 75 to 85°F (25-30°C) is crucial for freesia corms. Temperatures that are too low can inhibit the corm's ability to produce flowers in the following season, while excessively high temperatures combined with poor ventilation could lead to drying out or premature sprouting. Maintaining a dry environment prevents the growth of mold and mildew, which can quickly destroy corms.

Freesia Corm Storage Summary

For quick reference, here's a summary of freesia corm storage requirements:

By following these guidelines, you can successfully store your freesia corms, ensuring they remain healthy and ready to produce beautiful blooms in the next growing season.