I have to move the tree peony which is around 1.5 m high. The only good place is on some paving.
Yes, easy enough, with a large container and a good potting soil.
EX17, is that a UK location? Here's an article from the Royal Horticultural Society. See the section on "Container Cultivation:
We did not have AC so we had AC put in after too many hot summers.Of course the unit had to go on the side of the house the gorgeous peony was on.Before I could do anything the AC guy had dug it up.What I thought was the entire tuber laying on the lawn in the hot sun was not but I quickly replanted it under a tree on the opposite side of the house next to the garage. It took root because it came up the following spring. I was dumbfounded. I saved it! But bummer, no flowers, then the next spring, again the shoots all sprung up and all the green leaves and again, no flowers. But over from underneath the AC unit...up comes those beautiful pink blooms, no foliage, just those flowers. So this is two years now; I can’t dig them from under that unit. I wish the flowers would grow down by the garage. I did not know the AC guy left part of the tuber under the unit, otherwise, I would have transplanted the entire thing. Will the tuber down by the garage ever grow flowers, or do I have the foliage tuber down there and the flower one under that unit? Or is this not how it works?
It can take several years for transplanted Peony to bloom.
These links will help you.
https://www.gardeningknowhow.com/ornamental/flowers/peony/dividing-peony-plants.htm
https://www.gardeningknowhow.com/ornamental/flowers/peony/why-your-peony-buds-but-never-flowers.htm
What is the name of the peony you have on your web site the pinky one with the yellow stemen please
Do the spent blooms on a peony have to be pinched off?
Yes, you will want to remove the spent flowers.
This article will help you.
https://www.gardeningknowhow.com/ornamental/flowers/peony/peony-pruning.htm
How can I drain some of the water in my garden
Plants generally will not help with soil drainage.
Amending the soil or making changes to the landscape so that soil drains properly is the changes that you most likely need to make.
These articles will help you get started.
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/avoiding-wet-soil-tilling.htm
https://www.gardeningknowhow.com/ornamental/water-plants/wgen/water-tolerant-plants.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/yard-drainage-problems.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/making-sure-soil-drains-well.htm
Espoma Organic Neem Oil sufficient to treat peony bush? Have removed affected leaves...
Spots on peony leaves or mold on the plants is usually caused by one of two peony fungal diseases, botrytis blight (gray mold) or leaf blotch.
These diseases tend to show up in wet weather and plants that are infected early in the season may have severe leaf damage by late summer.
Neem Oil won't hurt, but avoid overhead watering, try to increase airflow in the area. Remove spent flower heads right away and cut back the plants in fall and discard the foliage. (do not compost)
https://www.gardeningknowhow.com/ornamental/flowers/peony/treating-spotted-peony-leaves.htm
but I question if cutting the flowers will cause fewer flowers the following year.
Removing blooms does not affect next year's plant. Think of it as a form or early "dead-heading"; you are keeping the plant from expending energy on making seeds. Making seeds is taxing for a plant so by removing blooms, plants focus on rebuilding the roots. Peonies are gorgeous and have a wonderful smell. Who can resist bring some indoors!