Sorry I am not sure that this is a tree peony flower - could you take a photo of the whole shrub please... As I am not seeing anything that looks like tree peony leaves.

You are seeing the leaves of my black homburg grape vine which I used to drape the flower over so that I could get a photograph of it. It is a Tree Paeony and you can just make out the leaves but I will take a photograph of the whole plant for you tomorrow if it stops raining. The east wind and the rain have finished the poor thing off today. I was going to take it up to Billy at Binnie Plants because it is in a pot but it was too far gone to be worth taking along.

The description of 'White Wings' in my RHS book doesn't match your flower, Scotsgran. Sorry. :-(

Thank you Spritz, so the hunt goes on.

Have had a look on Billy's webpage for you scotsgran but none of his tree peonys match the description of yours Sheila. Do you have to take the plant...couldn't you take a pic on your mobile or email him a copy of the picture or print of a copy of the picture you have just posted?

I will have a look. I can hardly use the mobile. It does take photos but I have not mastered the art yet. I hate mobile phones. You cannot get away from them, I would ban them because I see too often the stress it puts people under but then i also see the benefits. Maybe one day. I'm retired so am very busy. LOL.
I've had a look in the RHS book too now Spritz. I rarely consult it but found "WHite Wings" on Page 200. Why do you think the description does not fit. I am learning to look more carefully at what i see. A little bit of mentoring will help me understand what I'm looking at and what I'm missing. Their photo is not very good because it shows a quite tight cup but obviously mine has gone past that stage and opened out fully.

I have updated the photo as requested. It is probably the poorest looking specimen anyone has seen but that flower makes it worth while. I am wondering about pruning it to get the stem to thicken but maybe just putting it in the earth will be sufficient.

I still don't think the leaves look right for a tree peony.

I'm not as expert as the rest of you but to me it looks like a clematis. When I have googled pictures of tree peonys they look more frilly with double petals and they have "eyes" on the petals - if that makes sense.

The leaves on Lutea var.Ludlowii are described (RHS Plant Encyclopedia) as being bright green divided in to deeply cut pointed leaflets.I would think most of us recognise that as a Tree paeony. H. and S. 8'.
However Van Meuwen have several Tree Paeonies on offer with differing foliage.

The following link shows foliage similar to the perennial and quite unlike the lutea.
http://www.vanmeuwen.com/flowers/flower-plants/exotic-plants/tree-peony-guan-shi-mo-yu-1-bareroot/69474VM

Tree Peony Quan She Mao Yu
Paeonia , tree peony
Hardy Shrub
Deeply serrated, glossy foliage forms the perfect foil for an eruption of bold crimson flowers. Much prized for their gloriously oversized blooms, tree peonies make a stunning focal point in spring borders. Height supplied: 20-25cm (8-10"). Grows to 2m (78") tall. 3 year old plants supplied

Grow tree peonies in sun or semi shade, in well drained soil. Choose a position that is sheltered from cold winds and shaded from strong early morning sunlight. Add plenty of well rotted manure or compost ensuring that it is mixed in thoroughly and deeply. Plant tree peonies so that the grafted union sits at least 10cm (4") below the soil surface. Shallow planting may hinder establishment and delay flowering.

Hallo Scotsgran - I got my information about 'White Wings' from the RHS Encyclopaedia of Plants and Flowers, where it says that it's a herbaceous perennial - then a description of the plant and flower.

That's why I said it didn't match yours, as of course that isn't a description of a tree paeony!

I do hope you can find out the name of your plant.

I understand Spritz. That went over my head when I read it. The stem of this is not at all like the perennial types but definitely woody. I emailed pics to Billy at Binny Plants and he says it is highly unlikely to be a named variety of great distinction given the source. Costco must have sold millions of them so someone may still have the name available. It did come with a name. It will be interesting to see how it develops over the next year or two. I found out that it has actually rooted itself in to the ground where the pot is so OH has suggested cutting the plastic pot off and building a bespoke pot around it, without moving it from its present position.

An interesting solution! ;-)

The other one I have, took forever to produce its first flower last year. I planted it in the ground and it has not flowered this year. If I can avoid moving this one I may have a chance of it flowering again next year. My garden is so windy that it is probably in the best place for it. What would I do without my master builder.

You and me both! :-)

LOL.