ID please
in Plants
This has been building up for weeks, finally flowered today, lovely but no idea what it is.

Gardeners, I think, dream bigger dreams than emperors. – Mary Cantwell
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This has been building up for weeks, finally flowered today, lovely but no idea what it is.
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Looks like that to me too Hollie Hock.
Is it a Japanese anemone? Verdun has a great one called Wild Swan which I'm after. Some are invasive, but yours looks very pretty.
Took me two minutes to type but looks like I'm in good company
Thank you, think it might well be.