Techniques of Pruning (PowerPoint)

					Techniques of Pruning

       Unit 33
                  Objectives
• To select proper pruning techniques for specific
  plants and demonstrate their use in the landscape
• List 5 reasons for pruning
• Describe 4 types of pruning
• Demonstrate pruning a stem at the proper angle
• Explain how the correct time to prune is
  determined
          Why are Plants Pruned
• To remove dead, diseased, insect-infested, or broken
  branches
   – Keeps the plant healthy
• To change the size or proportion of the plant
   – To keep them from becoming overgrown
   – Also helps to consider the mature height and growth rate before
     placing the plant
• To develop a special form or shape
   – Topiary – practice used in formal gardens – plant material is
     trimmed into shapes (Edward Scissorhands)
   – Palier – method of training plant materials to grow flat against a
     trellis or wall
• To remove wilted or dead flowers and seed
  pods
• To rejuvenate a declining shrub
  – After pruning a plant usually produces better
    quality flowers and develops a better form
       Equipment for Pruning
• Tools must be kept clean and sharp to give a
  good clean cut
• Lab Exercise 7-15; 7-16
                Types of Pruning
• Thinning – removing certain branches from a plant to
  open up the plant
   – Allows more light to reach the inner branches
• Heading back – removal of the end section of the plant
  branches at the same height
   – Causes new shoots to develop to make the plant thicker
• Renewal Pruning – old branches that are large and
  unproductive are removed
   – Results in development of new branches and better flowering
• Root Pruning – involves cutting off all the lateral roots
  of the plant in a circle around the stem
   – Root prune 1 season prior to transplanting
     How and When to Prune
• Cut the plant stem at a 90 degree angle
• When to prune depends on when the plant
  flowers or bears fruit
  – Flowers in spring = summer pruning
  – Shrubs pruned after they flower
  – Flower in summer or fall = pruned before
    growth begins in the spring
                  Objectives
• To select proper pruning techniques for specific
  plants and demonstrate their use in the landscape
• List 5 reasons for pruning
• Describe 4 types of pruning
• Demonstrate pruning a stem at the proper angle
• Explain how the correct time to prune is
  determined

				
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posted:5/6/2012
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