In
botany,
perennation is ability of
organisms, particularly
plants, to survive from one
germinating season to another, especially under unfavourable conditions such as drought or winter. It typically involves development of a
perennating organ, which stores enough
nutrients to sustain the organism during the unfavourable season, and develops into one or more new plants the following year. Common forms of perennating organs are
storage organs (e.g.
tubers and
rhizomes), and
buds. Perennation is closely related with
vegetative reproduction, as the organisms commonly use the same organs for both survival and reproduction.