You should harvest onion seeds when the flowers are completely dried, and the seed coats inside the capsules are hard and a deep brown or black color.
Identifying Mature Onion Seeds
Knowing when to harvest onion seeds is crucial for ensuring viable seeds for future plantings. Here's a detailed breakdown of the signs to look for:
Visual Cues:
- Dried Flowers: The flower heads, which initially were vibrant, will become completely dried and brittle. This signifies that the plant has completed its flowering phase and is now focusing on seed development.
- Dark Seed Coats: The seed coats within the capsules will have transformed from a pale color to a deep brown or black hue. This color change indicates that the seeds have reached full maturity.
- Hard Seed Coats: The seed coats, when pressed gently, should feel hard and firm, not soft or pliable.
When to Harvest:
| Indicator | Sign |
|---|---|
| Flower Heads | Completely dried-down. |
| Seed Coat Color | Deep brown or black. |
| Seed Coat Texture | Hard. |
Practical Tips for Harvesting:
- Timing is Key: It's better to harvest slightly early than too late, as overripe seed heads may shatter, scattering the seeds on the ground.
- Gentle Handling: Handle the dried flower heads carefully during harvesting to avoid losing seeds.
- Drying Further: After harvesting, spread the flower heads on a tray in a dry, well-ventilated area for a week or two to ensure complete drying before extracting seeds.
- Seed Extraction: Once completely dry, gently crush the seed heads to release the mature seeds.
By paying close attention to these signs, you can successfully harvest mature onion seeds, ensuring a healthy supply for your future gardening endeavors.
