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AIR LAYERING

A method of propagating plants, air layering consists of:

1. Make 4-5 slits about an inch long around a stem 5-10" from the tip, cutting only through the bark and not into the wood. Dust slits with rooting powder. Alternate methods would include:

A. A notch may also be cut into the stem or a strip of bark 1 inch long may be removed directly beneath a leaf node. Often a deep slit is made upwards toward the tip of the shoot and the slit is held open with a thin sliver of wood.
2. Wrap and tie a clear piece of plastic (food wrap, etc.) around the stem below the slits, notch, etc. and fill it with moistened moss. Make ties with string, raffia fiber, or electrical tape.

3. Tie the bag firmly at the top and wrap string, raffia, tape, etc., around the rest of the moss ball to give it added support. In a few weeks you should be able to see small roots growing from the slits, notch, etc. and spreading into the moss.

4. After approximately 8 weeks when moss is filled with roots, remove plastic and cut the new plant free, cutting the stem just below the moss; pot the new plant, moss and all, in a potting soil recommended for the parent plant.

Note: Some plants are much slower to root and it may take 6-9 months before roots form.
Success in rooting by the air layering process is determined greatly by the time of the year, the age and condition of the plant. Air layering can be done at any time with most success being achieved during the spring. Most woody plants that are difficult to reproduce from cuttings are best propagated by air layering. Plants used as houseplants, such as Philodendron, Rubber Plants, Dieffenbachia, Ficus, Cordyline, Dracaena, Croton, and Chinese Evergreen lend themselves suitable for this type of propagation process. Other plants that are usually best handled by the air layering process include:

Abeliophyllum

Corylus

Hippophae

Populus

Wisteria

Acer

Cotinus

Ilex

Prunus

Zelkovia

Aesculus

Cotoneaster

Indigofera

Ptelea

 

Albezzia

Crataegus

Kolereuteria

Rhododendron

 

Betula

Cytissus

Laburnum

Styrax

 

Carya

Davidia

Lonicera

Symplocos

 

Castanea

Diospyros

Maackia

Syringa

 

Catalpa

Enkianthus

Magnolia

Tamarix

 

Cercis

Franklinia

Malus

Tilia

 

Cladratis

Ginkgo

Morus

Tsuga

 

Clethra

Halesia

Orixa

Ulmus

 

Corylopsis

Hibiscus

Osmaronia

Vaccinium

 

Other names used for air layering include: Circumposition, ringing, mossing, stem layering, Chinese layering and botanically Marcotting.
 
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