Sep 08, 2010
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How To Prune It Right


Pruning Tools
Pruning

Pruning Tools

Hand pruners are useful for small branches, up to about 1/2-inch diameter. Use lopper or a saw for larger branches, or for species with hardwood.

Long-handled loppers may be used to remove larger diameter branches, but precise cuts are more difficult to make.

Curved blade pruning saws cut on the pull stroke. Newer blade designs are able to cut large and small diameter branches quickly and cleanly.

Chainsaws are not recommended for pruning except by those trained in their safe, correct operation for tree work. Consider hiring a professional arborist for jobs involving larger limbs.

Pruning
  • Never remove more than 1/4 of a tree's crown in a season.
  • Where possible, try to encourage side branches that form angles that are 1/3 off vertical (10:00 or 2:00 positions). Branches at angles of 10:00 and 2:00 are often strongest. Side branches should have diameters less than 3/4 the diameter of the trunk.
  • For most species, the tree should have a single trunk, also called a central leader.
  • Ideally, main side branches should be at least 1/3 smaller than the diameter of the trunk. If removal of a main branch is necessary, cut it back to where it is attached to another large branch or the trunk. Do not truncate or leave a stub.
  • For most deciduous (broadleaf) trees, don't prune up from the bottom any more than 1/3 of the tree's total height.
How to Make a Pruning Cut:
Large Limbs: The Three Cut Method
A: Make a partial cut from beneath.
B: Make a second cut from above several inches out and allow the limb to fall.
C: Complete the job with a final cut just outside the branch collar.

Small Branches:
Make a sharp clean cut, just beyond a lateral bud or other branch.

Click here for a pruning guide.
Content provided by The National Arbor Day Foundation

You can find more information on pruning at the US Forest Service website.


 

 
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