Tips for collecting seed
- Pick a healthy and vigorous plant to collect from.
- Don’t collect too soon – immature seeds will not germinate.
- Collect on a dry day.
- Look for seedpods which have changed colour from green to brown.
- Cut or pick the seedheads and lay them out to dry somewhere warm.
- If the pods aren’t fully open, then wait until they have dried, then gently crush the pods or capsules to release the seeds.
- Some seedheads explode – they need to be checked every day. You can place them in a brown paper bag and wait for them to explode, or shake them.
- Once the seed is free, make sure you clean off the chaff to prevent the seeds from rotting.
Tips for storing seed
- Most seed can be kept to sow in the spring – hellebores are an exception and prefer to be sowed immediately.
- Use paper packets (or spent envelopes) and label them correctly.
- Keep them in an airtight plastic container with silica gel to absorb excess moisture.
- It’s good to store seeds at 5C as they can remain viable for long periods if refrigerated.
Original source here