It's a Japanese anemone which can be a thug, I can't get rid of it in my garden.

Yes, Japanese Anenome - I cleared a 3000sqft overgrown/10 year neglected garden of it in the late 1970s not knowing what a star it is. The landlord agreed to lay a lawn if I cleared the ground - I know better now and would have the Anenome over grass any day if the year.

I love it, don't care what people say about it being a thug as I don't have that experience of it. And before someone says that the clearance proves it is a thug, there were oak and beech saplings that were threatening to turn the garden into the local branch of Hundred Acre Wood.

It's not a thug in my garden but I know it is for lots of gardeners. Does it depend on the soil? For me, it provides late summer blossom and it's very pretty. Having said that, I do now have one or two more than I started with 18 years ago; that's a bonus in my garden.

Doesn't the thuggery depend on the variety? The common pink one is a thug here but white Honorine Jobert for example is very well behaved. As there are several nice pink ones its hard to tell if this is the thug or not.

I have the pale pink one in the photo but my thug is a dark pink one and I can't remember where it came from.

Urbanite. I am forever pulling up saplings in my garden.

I love that Japanese Anemone.

Thanks for all your info in identifying on what turns out to be a Japanese Anemone.
I dug all the roots out of a patch in my garden a couple of years ago, (well I thought I had) but it grew back just as vigorously last year,so I just left it.
So glad I did as the it blossoms from August through to October with with a cascade of pink flowers.

I think it earns its keep in any garden.