In terms of plant propagation, what does layering involve?

Layering is a propagation method that involves rooting a stem while it remains attached to the parent plant. This technique allows the stem to develop roots while still receiving nutrients and water from the parent plant, significantly enhancing its chances of successful rooting.

When a stem is encouraged to root in this way, it can be beneficial for several reasons. The attachment provides support, the stem can draw on the established root system of the parent, and there’s less stress on the plant during the rooting process. Once rooted, the new plant can be severed from the parent and transplanted with a well-developed root system, increasing its survival rate after propagation.

Other propagation methods mentioned in the choices, such as rooting a stem while detached, transplanting seedlings, or splitting the root system, do not fit the definition of layering because they involve different processes that do not utilize the same nurturing connection that layering does. By understanding the unique characteristics of layering, one can appreciate its advantages in plant propagation.