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  1. #1
    Join Date
    Feb 2010
    Location
    Rome NY USA
    Posts
    104

    Default Black knot fungus on plumb trees

    I have two plumb trees and have black knot fungus, does anyone know how to deal with it thanks.

  2. #2
    Join Date
    Jan 2008
    Location
    Sparta, Mi, USA
    Posts
    61

    Default Re: Black knot fungus on plumb trees

    Once you have it you will have to cut it out. Dosent hurt to dip your pruners in a bleach solution. Once you have it cut out burn it

  3. #3
    Join Date
    Sep 2012
    Location
    Bryant, AL
    Posts
    65

    Default Re: Black knot fungus on plumb trees

    ^^ like they said - no cure but it can spread... best to burn...

  4. #4
    Join Date
    Jun 2010
    Location
    Outagamie County, Wisconsin USA
    Posts
    835

    Default Re: Black knot fungus on plumb trees

    Just saw on TV to bleach your pruners with each cut and to cut at least 4 inches below the infection for the black knot on plums. I think peaches get that too. I agree to burn the trimmings. Remember to bleach after the last cut also.

    I hope you didn't have that from last summer. It does spread.

  5. #5
    Join Date
    Dec 2008
    Location
    syracuse n.y.
    Posts
    1,654

    Default Re: Black knot fungus on plumb trees

    there are some fungicides that will help, also was told by a commercial apple grower, remove all wild cherry and plum trees(they carry the disease).
    mike syracuse ny
    I went to bed mean, and woke up meaner. Marshal Dillon

  6. #6
    Join Date
    Jan 2013
    Location
    Niagara on the lake Ontario Canada
    Posts
    22

    Default Re: Black knot fungus on plumb trees

    First you must cut out the knots in spring b4 bud break at least 4 inches below existing knots

    Spray fungicide try Captain or Bravo

    Spray timing is bud break to petalfall

    This is a big problem on plums in south Ontario

  7. #7
    Join Date
    Feb 2010
    Location
    Rome NY USA
    Posts
    104

    Default Re: Black knot fungus on plumb trees

    Thanks for the advice

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