Dahlia is a genus of bushy, tuberous, herbaceous perennial
plants native to Mexico. The stems are leafy, ranging in
height from as low as 12 in to more than 6–8 ft. The majority of
species do not produce scented flowers or cultivars. Like most plants that do not attract pollinating insects through scent, they are brightly colored,
displaying most hues, with the exception of blue. Source
