Layering

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Layering
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Asexual Propagation

• Roots are formed on a stem
• root while still attached to the parent plant

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Asexual Propagation

• the stem or root which is rooted is called a
  layer
• the layer is removed from the plant only after
  rooting has taken place

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Advantages and Disadvantages

• relatively simple
• requires more time
• requires a lot of work by hand
• fewer plants can be started from each parent plant

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Advantages and Disadvantages

• usually very successful
• some plants layer naturally - raspberry

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Simple Layering

• a branch from the parent plant is bent to the
  ground
• covered with soil at one point
• terminal end remains exposed

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Air Layering

• Ancient Chinese practiced air layering
• process eliminates burying part of the plant in
  the soil

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Air Layering

• instead, a part of the stem is girdled
• cut all the way around
• the cut is surrounded by moist sphagnum or peat
  moss

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Air Layering

• Moss is wrapped with plastic to hold in place
• roots grow from the wound on the stem

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Air Layering

• Plants that propagate well this way
• Rubber Tree
• Persian Lime
• Magnolia

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Air Layering

• When rooting is complete
• 4-6 weeks
• cut layer BELOW roots and transplant
• Parent portion will continue to grow and form new
  branches

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Trench Layering

• parent plant is bent to the ground and covered.
• Shoots arise from buried buds and roots form
  under soil

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Stool or Mound Layering

• parent plant is cut back to the soil level
• entire plant is mounded with soil
• forms numerous shoots and roots

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Compound Layering

• stem is covered by soil at two or more points
• remaining portion is left uncovered
• Stem is girdled at points

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Compound Layering

• girdled points are buries with soil
• roots grow from the girdled points
• Above ground parts continue to produce leaves and
  stems