Rotting plum fruit

Discussion in 'Fruit and Nut Trees' started by Tony Puddicombe, Jul 10, 2021.

  1. Tony Puddicombe

    Tony Puddicombe Active Member VCBF Cherry Scout

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    I have a plum tree that has produced many fruit this year. Plum cultivar unknown but the tree came from a nursery: about 8 feet tall, flowers white, the roundish fruit with an apex on the bottom ripens from yellow to purple.
    8 year old tree
    A3C039D9-FB4E-4C72-BCB9-2F261BA47055.jpeg
    Leaf shape
    D73DCD27-5B85-4F9A-9477-E4335C73D801.jpeg
    starts out as a yellow fruit
    BBBD2B34-E61F-4071-899C-164727F2219F.jpeg
    rot in plum fruit
    BB299C90-3573-4FE6-9107-6B94D7A23787.jpeg

    Unfortunately 1/3 of the fruit have rot which is (I think) a fungus. See photo in this post.
    What caused this fungus??? The only thing different was the high temperatures up to 41 C in June. Why? ,well all the plums ripening now are fine with no rot
     
    Last edited by a moderator: Jul 10, 2021
  2. Margot

    Margot Generous Contributor 10 Years

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    Hi Tony - I see no one who might be able to help you has had a chance yet to reply so I'm sending this to keep your request on the front burner.
     
  3. vitog

    vitog Rising Contributor 10 Years

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    I've seen a similar problem (though the rotted portion is all dark brown) that affects only the Beauty variety of the five grafts on the plum tree. Since it has so far only affected a small portion of that one variety, which bears more fruit than I need, I haven't pursued a cure. However, I've never seen this problem before; so I suspect that it has something to do with the unusually high temperatures that we experienced recently. I only noticed it after that heat wave. My Beauty plums look a lot like the ones in your photos.
     
  4. Daniel Mosquin

    Daniel Mosquin Paragon of Plants UBC Botanical Garden Forums Administrator Forums Moderator 10 Years

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