Did you let it go to seed last year? Astrantias are notorious seeders. If there are no other astrantias in the vicinity, they will be A. maxima as it is a species and will come true from seed.

And, as Andrew says, seeds like billio!

Gorgeous, best of luck with the plant sale x

Very pretty, I may have to try some as I would love it to pop up everywhere in my garden.

Lucky you Celia, I must remember not to dead-head mine this year! They are much-loved in my garden but i didn't know about their seeding habit. Learn something every time I log in!

Thnaks to you all for responses to my question about Astrantia maxima. I guess the idea that it was spreading by putting out runners was just poor observation on my part! I shall now go and dig up lots of the seedlings to sell;plants which can be seen in the garden in flower on the day always attract more buyers! BTW, I also have A.Ruby Wedding, which is a cultivar, but is a glorious rich colour amply justifying its label.