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Simple layering
Simple layering is a method of managed plant propagation. The process does not involve seeds, roots, or removing any part of the plant. Instead, a low-growing stem is bent down into a hole in the soil where it takes root and the original plant goes on as two plants. This process can be repeated many times with the same plant.
==Method==
A low-growing stem is bent down to touch a hole dug in the ground, then pinned in place using something shaped like a clothes hanger hook and covered over with soil. However, a few inches of leafy growth must remain above the ground for the bent stem to grow into a new plant. Removing a section of skin from the lower-facing stem part before burying may help the rooting process. If using rooting hormone, the stem should be cut just beneath a node. The resultant notch should be wedged open with a toothpick or similar piece of wood and the hormone applied before burying.
The buried stem part then grows new roots which take hold in the soil while the above parts grow as individual new plants. Once the end of the stem has grown long enough the process can be repeated, creating the appearance of a row of plants linked by humped, intermittently buried stems. Better results can be achieved when the top of the plant is closer to the vertical.
Once the process is completed, the buried section should be kept well-watered until roots begin to form. The new individual plant may require one to two years before it is strong enough to survive on its own. When it is, the original stem should be cut where it enters the ground, thereby separating the two plants.〔(【引用サイトリンク】title=Plant Propagation by Layering: Instructions for the Home Gardener - NC State University )〕〔(New Plants From Layering ), Department of Horticulture, Purdue University Cooperative Extension〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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