What causes the buds of peonies to not develop?

Discussion in 'Flower Gardening' started by Cayuga Morning, Jun 4, 2020.

  1. Cayuga Morning

    Cayuga Morning Strong Ash Plants Contributor

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    Any peony growers out there?
    I have a peony that is not going to bloom much this year. The buds started and then did not develop. This has been a very reliable peony in past years. It's sister is doing just fine. Any ideas? IMG_20200604_163533_compress76.jpg

    You can just barely see the undeveloped bud here. Most of the buds look like this. IMG_20200604_163540_compress17.jpg
    Above is a bud that has developed the way it should. This is on that same peony. IMG_20200604_163546_compress51.jpg

    This is a shot of the budless peony. It looks plenty healthy otherwise.
    IMG_20200604_163550_compress33.jpg

    This is the sister peony, right next door to the first peony.
    Can anyone shed some light here?
     
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  3. mart

    mart Hardy Maple

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    Has there been a change in the weather ?
     
  4. Cayuga Morning

    Cayuga Morning Strong Ash Plants Contributor

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    We had a mild winter then a very cool spring.
    I have had peonies do this right after being transplanted.
     
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  5. Sjoerd

    Sjoerd Mighty Oak

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    I know this Cayu--I used to grow peony's until two things happened--I needed the ground for a plum tree and my Bride wanted them gone. hahaha. That sounds harsh, actually she didn't like the ones that I had, and Nederland being a moist country, the blooms filled with water and earwigs, and their weight caused the stems to bend over. Of course I could have kept them, but in hindsight I ought to have selected another more open type.

    Nu, ter zake:
    This curious anomaly that your plants are presenting with can be covered by the umbrella term, PBB, or Peony Bud Blast. The term itself does not actually refer to a disease, rather a symptom...a symptom that is caused by one or more physical conditions present in their plot.

    Nr. 1-- Not enough sunlight
    Nr. 2-- Insufficient 'food', or nutrition
    Nr. 3-- Inadequate moisture during dry spells
    Nr 4-- over-crowding
    Nr. 5-- Sudden drops in temp during the phase in which the buds are developing
    Nr. 6-- Planting them too deeply
    Nr. 7-- I have also heard that it could be from botrytis, microscopic worms (similar to what got into my onions) or K deficiency

    Now then Cayu, those are several things you can think about and R/O. I cant help you from here because I cannot appraise the plants and their site; however based upon what I see, I could imagine that you could thin out your peony's and perhaps transplant some to another location with different conditions in terms of sunlight and soil type.

    At any rate, I would be delighted to hear what you think and what actions you will take, if any. Bonne chance.

    Addendum: Thanks for the good foto's in accompaniment.
     
    Last edited: Jun 5, 2020

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