About 2 years ago, I used this Forum to ask about my difficulties with getting N. cyclamineus seeds to germinate. I was advised to buy a couple of pots from a nursery, collect any seed produced, then sow the seed as fresh as possible. I took the advice and it has worked wonderfully. The home collected seed has germinated and emerged really well while seed from other sources has not germinated so freely.
So, this is a thank you to the members who responded to my post.
Incidentally, I got the pots of flowering plants from the garden centre at RHS Wisley and those bulbs are flowering well again this year.
Jack Meatcher