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Black knot on my prune tree.

Black knot on my prune tree.
Posted by Ron from ny/5 on 2002-03-07 07:38:07

I have a stanley prune-plum tree with a big black knot on the main leader. I removed several lateral branches with smaller knots during pruning but this one is on the main. To cut or not to cut....that is the question!
  • Black knot
    Posted by Kimm from 4a/5b-MI on 2002-03-11 06:12:14

    Cut it out since it will only spread. You can train a new leader from somewhere else.
    Be sure to cut well below the obvious area of infection. A Lime/sulfur spray applied twice before bud break is supposed to help contol this fungus.


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