Text book answer is, they are not expected to flower the first spring after planting, but "should" flower the following years. In my own experience I find 2-3 years before a bloom but i'm in South Yorkshire. The only other reason they may not flower is that they are planted too deeply, sorry no experience of the varieties you mention.

I have a Sarah Bernhart that flowers profusely and has done since its first year (it's even flowered after being moved, which they really don't like). I suggest you use a good amount of blood, fish & bone after flowering (or in your case, now - after they would have flowered). Use at least 4-5 handfuls around the plant.

Other than that I'm afraid I can't help.

Thanks for that - I'll feed them all. It looks like the rain is coming to water it in.

Well I added some blood, fish and bone around each plant, but I didn't use as much as you recommended Dioritt, as I think that amount would have buried them! :-) But they got some - I hope they're grateful!

They do like a lot, but of course how much depends on the size of your plant. Mine's a whopper. Lol. Good luck with it :)

I have a peony I put in 3 yrs now and still has not flowered, yet my other two are flowering in abundance. I might take it out if it does not flower next year and replace.

I'm so glad it's not just me. I look at the pathetic amount of foliage my paeonies produce - and not a sniff of a flower bud. I plant a couple more every year - must be nuts!