Single Plant Selection

Single Plant Selection is a foundational breeding classification describing the isolation and propagation of a phenotype from a larger population. This practice involves identifying an individual plant exhibiting desired traits—morphology, vigor, terpene profile, or growth characteristics—and using it as the exclusive parent stock for subsequent generations. Single plant selection has been central to cannabis breeding since informal cultivation began, enabling breeders to stabilize and concentrate specific genetic expressions. The method differs from mass selection, where multiple plants are crossed, and from line breeding, where selections are maintained across parallel populations. Lineage records frequently report single plant selections as the origin point for named strains or cultivar families.

Breeders employ single plant selection to establish genetic stability and preserve rare or exceptional phenotypes. This approach forms the backbone of inbreeding programs and is critical when founding elite clones or stabilizing hybrid vigor before wider population work.