The tops I know are still green in Sussex, you will have to wait a little longer. Lift the clumps and divide with two garden forks back to back. Plant back in 3's or 5's. For the best results feed in the spring.

Yes still green and flowering.. Will do as you suggest when they die back. Thank you Pollyanna

Oops divided mine a month ago!

Don't worry Denise, they may have been in a dry state when you cut them down. Don't try to encourage them to grow before the spring as they will be subject to frost.

i always do mine in the spring.

Thanks docb they were very dry so fingers crossed

I did mine as well, Denise! I needed to move them, and split them at the same time. I don't think they'll lack water today, do you? LOL.