You know these type of pots - you've been meaning to redo them for two years, so they're only half-full of too-well-rotted soil, and they'd been missing under a pile of fallen leaves in a forgotten part of the garden for some time. I rescued them, completely leafless, a few weeks ago, stuck them out in the sun and started watering them. I KNEW what was in them, but I certainly didn't expect so many.
What grand timing! They're blood lilies, or scadoxus multiflorus, and I was given one bulb by our dear family friend Jan some years ago. Over time the bulb has multiplied, and I had divided them into two pots-ful a while back. Looks like they've come to maturity since then! So far I've cut at least four for vase-flowers and there's still at least eight in the pots.
Oh for the right spot in the garden to let them naturalise...
Edited to add: The size of one of these blooms is almost 20cm (or 8in) across!