Family Plot
  • Home
  • Watch
    • TV Schedule
    • Full Episodes Online
    • How-to and Informational
    • Questions and Answers
    • This Week in the Garden
    • Garden Notes
  • Garden Topic Collections
    • Apple Trees: How-to and Information
    • Peach Trees: How-to and Information
    • Tomatoes: How-to and Information
    • Square Foot Garden Blog
  • Resources
    • Soil Testing
    • Extension Publications
    • Gardening Resources
    • Blogs
    • Organic Gardening
    • Articles
    • Privacy
  • Guests
  • Contact Us
    • Ask a Gardening Gardening Question
  • Search

Q&A - What are the growths on my plum tree branches?

Question:
I have black swollen growths on the branches of my plum tree. Is this a problem and how do I take care of it?

Answer:
This is black knot. It is a fungal infection on plums and cherries. The growth starts as a soft gel. The gel hardens and turns into a gall. It is hard to impossible to treat with chemicals. The easiest way to take care of it is to prune it out. Cut the infected branch 6-8 inches below the infection and dispose of the branches. The fungus overwinters in debris around the tree.

Related Resources:
Black Knot
Black Knot Of Plum
Black Knots Of Prunus
Website Copyright 2025 Family Plot Garden
Content Copyright 2015-2025 Family Plot Garden & Mid-South Public Communications Foundation

  • Home
  • Watch
    • TV Schedule
    • Full Episodes Online
    • How-to and Informational
    • Questions and Answers
    • This Week in the Garden
    • Garden Notes
  • Garden Topic Collections
    • Apple Trees: How-to and Information
    • Peach Trees: How-to and Information
    • Tomatoes: How-to and Information
    • Square Foot Garden Blog
  • Resources
    • Soil Testing
    • Extension Publications
    • Gardening Resources
    • Blogs
    • Organic Gardening
    • Articles
    • Privacy
  • Guests
  • Contact Us
    • Ask a Gardening Gardening Question
  • Search