Perennation is the ability to survive in a plant through the winter or dry season.
And it involves the development of a perennating organ, which stores enough nutrients to sustain the organism during the unfavorable season and it develops into one or more new plants the following year.
Common forms of perennating organs are storage organs for example tubers, rhizomes, corms, and buds.
It is closely related to vegetative reproduction, as the organisms commonly use the same organs both for survival and reproduction.