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Peonies

in Plants
Have just planted a few peonies and one is like this... have had someone say it is gd.. but just wanted to make sure

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They mustn't be planted too deep, otherwise they don't flower. The maximum you want the crown to be below the surface is about 2 inches. We prefer to have our crowns just visible, at ground level.
Has it successfully flowered for you before?
Ideally it would have been better to wait until Spring before planting them, but as you have already done so, you'll have to hope that any frosts don't shock them.
Whatever you do, I would maybe give them a mulch with bark chips, or something else, just to give them some protection. However, make sure this doesn't cover the crown, where the growing shoots will emerge from.
The ground looks very wet too.
As @JennyJ says - those shoots are what happens when a plant is essentially 'forced' because they've been in warmer conditions. The plastic contributes to that too.
Most peonies, regardless of location, wouldn't be at that stage, even with milder conditions.
I'd be inclined to lift those and pot them up - just in any compost will be fine, and keep them somewhere sheltered for another month or so. Then gradually acclimatise them for planting out. They need decent drainage and a sunny site.
Mine are always planted with the crown slightly proud of the soil to counteract the wet, but it's important to keep them quite near the soil surface for the reasons @KeenOnGreen describes.
I live in west central Scotland - not where that photo is...
I live in west central Scotland - not where that photo is...