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: a tall plant with rounded leaves and brightly colored flowers
Full Definition of HOLLYHOCK
: a tall widely cultivated biennial or perennial herb (Alcea rosea syn. Althaea rosea) of the mallow family that has large coarse rounded leaves and tall spikes of showy flowers and that is probably of Asian origin
Hollyhock (Althaea rosea)—Lefever/Grushow from Grant Heilman Photography, Inc.
Herbaceous plant (Althaea rosea) of the mallow family, native to China but widely cultivated for its handsome flowers. The several varieties include annual, biennial, and perennial forms. The stalk, growing about 5–9 ft (1.5–2.7 m) tall, bears leaves with five to seven lobes and, along the upper portion, commonly white, pink, red, or yellow flowers.