Bladder Plum

Bladder plum is a fungal disease similar to peach leaf curl. In cool wet spring weather it spread by rain splash and infects fruit making them spongy and rotten.

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Bladder plum infection starts with a small blister on the fruit. The blister quickly grows and soon covers the whole fruit and they may grow to ten times their normal size. The fruit goes white/grey, gets a spongy texture and becomes covered with velvety, gray fungal spores. Eventually infected fruit dry out and turn black.


  • Prune and dispose of affected parts of the plum tree.
  • Spray with copper oxychloride spray.
  • If irrigating trees apply water to the roots and not foliage.
  • Carry out a winter spray programme when trees are dormant.

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