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horticultural practice of propagating a plant by rooting a branch before severing it from the mother plant. Typically the branch is bent and a section that has been slit or broken on the underside is covered with soil and held in place by means of stakes or pins. Trench layering induces new shoots from a length of buried branch. In mound, or stool, layering, the many shoots of a closely cropped young plant are heaped with soil. Air (or pot, or Chinese) layering is used when the branch cannot be bent to the ground; peat moss or some other suitable rooting medium is attached to a cut place on the branch. Layering is used mostly for multiplying plants not easily propagated from cuttings. Some plants propagate naturally by layering, e.g., raspberries, strawberries, and chrysanthemums.


See bulletins of the U.S. Dept. of Agriculture; H. T. Hartmann, Plant Propagation (1968).

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A propagation method by which root formation is induced on a branch or a shoot attached to the parent stem by covering the part with soil.
A stratum of plant forms in a community, such as mosses, shrubs, or trees in a bog area.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The types of vegetative propagation commonly used include various types of cuttings, specialized bulb techniques, layering and air-layering, crown division, and budding and grafting.
The Eugene Bonsai Society invites the public to attend a free program on grafting and air-layering of bonsai at 7 p.m.
This is one reason why air-layering works as a propagative technique and why cuttings root best at their proximal end, within the darkened rooting medium.
If you have a rubber plant or weeping fig, this can be propagated by air-layering. Use a sharp knife to cut two separate rings, about half an inch apart, around a sturdy stem.
Wrapping in gunny cloth, mossgrass and polyethylene and their various combinations have been tested for improving the air-layering technique on late seedless variety.
By using a process called air-layering, demonstrated here by Olympia gardener Helmut Bauer.