It was placed in a partially sunny spot but it has been raining the past 3 days straight. Didn’t add any fertilizer yet as I only potted it a month and a half ago. What’s weird is that it’s not showing any signs of discoloration or any odd markings on the foliage but the leaves are just curled and droopy.

Notice the white looking discoloration on the stem pointing toward the front of the third picture? It appears that at least that stem has a fungus. You might even be able to remove some of it with your fingernail. If you can cut that stem away as it is dying. Fungus can be both air, soil, and water borne so what causes it ????

Are you using feet under the pot? If you don't have pot feet, set the pot up on bricks.

Oh i didnt realize that. I’ll check it once I get home but if it is a fungus would copper fungicide do it or is that only supposed to be applied before the fungus appears? Nope I don’t have a saucer or anything under it. It’s on a patio brick

get it out of the rain .... even just under an eave ...

probably overwatering.. and lack of sunshine ... cold media ....

sometimes things grow so fast in spring.. they flop ... and eventually stiffen up ...

if that one leaf is going downhill.. just snip it off ... i wouldnt go slathering on remedies.. and stress it more ....

ken

I do agree with Ken, it's kinda weak looking and if you throw stuff at it, it'll likely get worse. You need to improve conditions more than treat it.

If it is already damaged by a fungus as I suspect that fungus is in the tissue. There is no amount of tossing anything at it that would probably save that shoot. Better to remove the shoot before the fungus starts to affect the roots and the rest of the plant. The only fungus that I would just leave the effected portion alone is powdery mildew but the stem tissue of this plant seems affected.

From several years of watching the newer type of powdery mildew that seems to have developed within the last ten years the powdery mildew that will cover the whole plant with a white blanket does not seem to do any harm to the plant. It is unsightly and makes the plants appear ghostly but that is all. Some plants are effected by it while the ones next to it may or may not have a light amount or none.

I have seen the mildew reported in all kinds of areas in the US and while moist conditions, even heavy nighttime dews, can cause it to appear it appears that it may have a genetic adaption to certain types of peonies. More study needs to be done regarding this.

I agree with malfleur that this looks like paeony wilt or botrytis. Removing the affected parts (and clean your secateurs) and looking for signs of sclerotina or discolouration. The rain and humidity provides a perfect access point for opportunistic fungal spores. You might want to contact the vendors...is the potting mix the same as when you bought it? At this point, the outcome isn't certain death...but it isn't looking too hopeful for a young plant, tbh.

I talked to the vendor yesterday and he said he will be ‘nice About it’ if it dies. It was bare root when I received it. I did see a dusting on the stems which weren’t so noticeable but when I rubbed it off I saw some white dust on my finger. I cut off the small shoot off but left the big one on. This was such an expensive plant.... damnit

So we're about a week later, is it looking better or worse?

Wilt is still there except some leaves are slowly getting crispy at the edges and looks like the whole leaf will collapase. I'll take and post pics tomorrow

Of course the whole leaf will collapse which is why it was suggested that the stem be removed before the fungus reaches the root.

Every foliage is affected which means if I would to remove the affected stem then that means I would have to completely defoliate it

You could try a Mancozeb fungicide...but I am afraid it doesn't look good for this plant once the conidia have invaded all plant tissue above ground. Suggest you take the option offered by the vendor, remove and burn all plant materials, clean secateurs and read up about cinerea molds.

How do you know that it is definitely cinerea mold and Not some another disease like peony wilt? I got my potted Corydalis, convallaria, pinellia, and artemisia nearby the peony... and today is a super windy day. Guess I should goodbye them pretty soon too.... sigh

Just an FYI while P. ovobata is a complex of veritable leafed plants this last picture does not appear to be one of the complex based on the shiny leaves.

If you cut off the foliage down to the base the root will still be alive and might survive. Not cutting it off the survival of the root is highly suspect. Since the vendor is willing to help later if it dies you loose nothing by cutting it off now using clean shears. I would also remove it from that pot and replant the root in new medium.

The vendor is nicer than I would be as the fungus developed after you received it and the vendor had nothing to do with how it became infected. To me it is just something that happens with plants and nothing the seller did.