Layering
/ˈleɪ.ɚ.ɪŋ/
Definition
Layering is a vegetative propagation technique in which a stem forms roots while still attached to the parent plant. Part of the stem is bent to the ground, covered with soil, or enclosed in moist rooting material, and roots develop at that section before it is cut free. This differs from stem cuttings, which are detached first. Natural layering can also occur when trailing stems root where they touch soil.
Practical Relevance
- Reliable cloning method: Layering produces a new plant genetically identical to the parent, which helps preserve cultivar traits that may not come true from seed.
- Works well on difficult species: It is often used for shrubs, vines, and woody plants that root slowly from cuttings, because the stem keeps receiving water and sugars from the parent while roots form.
- Low-stress propagation: Because the developing section remains attached, layering usually causes less water stress than detached cuttings and can give higher success rates for home growers.
- Common forms in gardening: Gardeners may use simple, tip, serpentine, mound, or air methods depending on the plant’s growth habit, stem flexibility, and whether stems can be bent to the soil.
Related Terms
Propagation
Propagation is the process of producing new plants from seeds, spores, or vegetative parts such as stem cuttings…
Vegetative reproduction
Vegetative reproduction refers to a form of asexual plant reproduction in which new plants grow from roots, stems…
Grafting
Grafting is a horticultural technique in which tissues from two plants are joined so they grow as one. The upper piece…