Hi Alice, I'd love to see a photo if you can upload one. Start with the tree in the tool bar. I don't know what you do to load from a phone
I've never sown any in the garden Lyn, It's DIY
The first lot I had, years ago, just 6 seeds from a friend, germinated very quickly in a pot and everything is descended from those
Bob is right, I didn't think to mention that, the existing bulbs won't change, only their offspring
Not sure if different narcissus species can cross but cultivars of the same species will and all seed back to something closer to wild.
I think I'd have the large cultivated ones out, for me they'd spoil the effect.
Some people recommend soaking them first.
I usually sow fresh and they germinate quickly. I only have a cold GH and if we got a proper winter they might fail, but they're very nearly hardy. The self sets in the garden mostly survive and if they don't, more will germinate. I've got a good crop this year
I would think if you let them seed last year a rake over to loosen the soil would do the job. But check first, they may already be germinating
They grow here, in an area of grass and alder suckers, that gets inundated at some point during most winters, but not all. Quite sunny. dries out a lot in the summer after they've disappeared. Multiplying well.
It can be done, it's the ones that have seeded into clumps of perennials that are difficult
They're easy if they have enough moisture. Prediction of flowering dates is less easy.
It looks like a mixture of arums. Arum italicum and maculatum. The latter is our native 'Lords and Ladies'. It's irrelevant which, they both work the same way.
Every tiny little corm grows, you need to get them out to stop them coming back. But if you remove the leaves they won't recur this year.