Hi Pennyf - copy and paste the link below

http://bit.ly/fi2ncN

I'm not to sure how well they'll do on clay but good luck!

I would say that many Pasque flowers, Pulsatilla, are too large for a rockery and would do well towards the front of a border. The main problem for you will be that they are deep rooted and need to get down into the ground. Do you have raised beds above your clay? I agree that they are very desirable plants. We grow lots.

Like Pennyfarthing, I succumbed to the lure of some of these yesterday. Gorgeous things! Thanks for the advice from me too.

I'd say they are too big for a rockery plant but they want rockery conditions - full sun and fierce drainage

Are they eaten by rabbits?

Not usually Beattie but, as you know, young rabbits will have a go at anything...

Well if they like your garden they will choose their own positions. We have them self seeding all over the place, even in the paths where they get trodden on. Pity one cannot add photos to answers.
If you want to increase your stock of them Take the ripe seed (it comes away easily when ripe) snip off the fluffy tail and sow straight away in ordinary compost, lightly covered with grit. Germination usually takes place quickly. They hate root disturbance so prick out the following Spring before they get too big.

I have wondered about snipping the tails off seeds, Owdbobby, so last year tried sowing two pots of pulstilla, one with tails and one without. They have germinated equally.

I tried the experiment a long time ago and found that the unsnipped ones were more likely to be infected with fungus. That may be my growing conditions more than anything else.
I can tell you one strange story. My daughter and I stood side by side sowing the seeds in similar compost, pots etc, taking the seed from the same brown paper bag. All of hers germinated, not one of mine.

Well, I'm quite excited by all these comments. Thank you everyone. But, Moongrower, I couldn't get the link to work--it took me somewhere else entirely! I will try again. Right, so full sun and fierce drainage! OK, I've just bought some coarse grit. I love the idea of their self-seeding everywhere---that would be great, but if mine develop seed I'll try my hand at sowing some just in case. They look very special--I thought they would be difficult, but it looks as though, if I can get the soil right, I should have plenty in a year or two!

This is where MG's link went.
http://gardenerstips.co.uk/blog/flowers/growing-pulsatilla-the-pasque-flower/

I wondered how it got there as that address is quite different to the one she gave. ???

I don't know how Mg gets these abreviated addresses but I have just used it and got straight through to the Gardeners Tips site.

Thanks Beattie--As you got through, Bulbaholic,it's probably me, although I did just copy and paste. Will now try the full address.