14 August 2010


Kanjohakuhi- air-layering

Propagation of a new tree while still attached to the parent tree .

Air-layering is good for creating a larger tree and for creating a better nebari or shortening a too long trunk on an existing tree.

Satsuki Azalea
 Rhododendron indicum

Brazilian Raintree - Pithecellobium tortum

Japanese Maple 
Acer palmatum

Japanese cedar - Cryptomeria
in a Rooter Pot

Chinese Quince
Pseudocydonia sinensis

punica granatum

Buddhist pine, Chinese Yew

Myrciaria cauliflora
Ulmus x hollandica
Elm  'Jacqueline Hillier'
Christmas Camellia
Camellia sasanqua
Rooter pots
Chinese Elm
Ulmus parvifolia
Rooter pot
Creating two trees from a too long trunk

  1. With a sharp knife, make two parallel cuts about 1 1/2 inches apart around the stem and through the bark and cambium layer wide enough to prevent the callus from linking and remove the ring of bark leaving the inner woody tissue exposed.  
  2. Place a rooter pot or create a temporary container starting a few inches below the girdle and ending  atleast an inch above the girdle.
  3. Dust the wounded stem with rooting hormone. 
  4. Fill the “pot” with a moist rooting medium.
  5. Keep the soil moist.
  6. After the new roots are visible on all sides, the rooted branch may be removed from the parent plant. The rooting time will vary with plant variety as well as the season in which it is performed. 
  7. Plant in a growing pot and place guy-wires to secure the top of the new tree until the roots are strong enough to anchor the tree.
  8. Keep the plant under a light shade and avoid direct sunlight until the new root system is well developed.

Air layering for difficult-to-root plants (Fact sheet - Texas Agricultural Extension Service)

American Horticultural Society Plant Propagation: The Fully Illustrated Plant-by-Plant Manual of Practical Techniques

The Reference Manual of Woody Plant Propagation: From Seed to Tissue Culture, Second Edition

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