Dahlia is a genus of bushy, tuberous, herbaceous perennial plants native to Mexico and Central America. As a member of the Asteraceae family of dicotyledonous plants, its relatives include the sunflower, daisy, chrysanthemum, and zinnia. There are 49 species of dahlia, with flowers in almost every hue, with hybrids commonly grown as garden plants.

Tubers are a type of enlarged structure used as storage organs for nutrients in some plants, derived from stems or roots. Tubers help plants perennate, provide energy and nutrients, and are a means of asexual reproduction.