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Pruning Basics

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Transcript

  • 1. Bluff Country Master Gardener Association
    “Spring into Gardening”
    March 6, 2010
    Pruning Basics: Shrubs
  • 2. What’s the difference between a tree and shrub?
  • 3. Forms
    Branched-head Standard
    Single, clear trunk that divides to form open crown
    Decurrent
  • 4.
  • 5.
  • 6.
  • 7. Forms
    Central-leader Standard
    A single strong trunk persisting all the way through the crown
    Excurrent
  • 8.
  • 9.
  • 10.
  • 11. Forms
    Bush
    Rounded head on short trunk
  • 12.
  • 13.
  • 14. Forms
    Multistemmed
    Resembling large shrubs with several distinct branches (or trunks)
  • 15.
  • 16.
  • 17. Forms
    Fastigate
    Narrow, columnar in form with upswept branches
  • 18.
  • 19.
  • 20. Forms
    Weeping
    Typically a mutation causing atypical growth
    Propagated through grafting onto rootstock.
  • 21.
  • 22.
  • 23. Forms
    Weeping Standard
    Often formed by top-grafting a weeping cultivar onto a stock plant with a clear stem
  • 24.
  • 25.
  • 26. Pruning Techniques
    3 Point Cut
    Undercut
    Stub cut
    Cut at branch collar
    Best in dormant season
  • 27. Pruning Techniques
    Heading back
    Cut at lateral branch or bud
    Hard prune in dormant season
    Light prune thru mid-Summer
  • 28.
  • 29. Pruning Techniques
    Thinning
    Removal of up to 1/3 of the stems
    Largest / oldest stems
    Best in dormant season
  • 30.
  • 31. Pruning Techniques
    Dead heading
    Heading back cut to bud
    Removal of spent inflorescences within 2-weeks of flower-fade
    Plants that bloom on wood from previous season
    Spring blooming woody ornamentals
  • 32.
  • 33. Pruning Techniques
    Renewal
    Cut back all stems ½ to 1/3
    Remove largest stems
    Hard prune
  • 34.
  • 35.
  • 36. Pruning Techniques
    Shearing
    Removal of the most vigorous shoots
    Growing season thru late summer
    Formal appearance
  • 37.
  • 38.
  • 39.
  • 40.
  • 41.
  • 42. A
    B
  • 43.
  • 44.
  • 45.
  • 46.
  • 47. Mike Maddox
    Horticulture Educator, Rock County UW-Extension
    Director of Education, Rotary Botanical Gardens
    Thank You!