Sp. Pl. 2: 687. 1753
Phenology: Flowering May–Oct; fruiting Jun–Oct.
Habitat: Disturbed sites, roadsides, vacant lots
Elevation: 0–3000 m
N.B., Ont., Que., Ariz., Calif., Colo., Conn., Del., D.C., Ga., Idaho, Ill., Ind., Iowa, Kans., Ky., Md., Mass., Mich., Minn., Miss., Mo., Mont., Nebr., Nev., N.J., N.Mex., N.Y., N.C., N.Dak., Ohio, Oreg., Pa., R.I., S.Dak., Tenn., Tex., Utah, Vt., Va., Wash., W.Va., Wis., Wyo., Asia (China), introduced also nearly worldwide.
Alcea rosea is a showy and popular ornamental that is essentially cosmopolitan in cultivation. The species is thought to have originated in the southwestern provinces of China but is apparently not known in the wild. It occasionally escapes and naturalizes in disturbed temperate areas nearly worldwide. However, it is often difficult to determine if a given specimen was cultivated or an established adventive. Plants with more deeply lobed leaves and rose-pink flowers have been called A. ficifolia; plants in cultivation under this name are most likely a mix of A. rosea and A. rugosa or of hybrid origin.