Alcea rosea

Alcea rosea (commonly known as hollyhock) is a species of flowering plant in the mallow family Malvaceae. It is native to Asia and the Eastern Mediterranean and is widely cultivated for its large, showy flowers.

Description

Alcea rosea is a biennial or short-lived perennial plant growing to 3.5 m tall, with broad, rounded leaves and numerous flowers, each with five petals, on the erect central stem. The flowers are 4–10 cm diameter, with a deep, funnel-shaped base, and are produced in a tall, erect spike. The flowers are usually pink, but can also be white, purple, red, yellow, or black.

Cultivation

Alcea rosea is widely cultivated for its large, showy flowers, which are produced in a wide range of colours. It is a popular garden plant, particularly in cottage gardens and informal garden settings. It prefers full sun and well-drained soil, and is tolerant of drought and poor soil conditions.

Uses

In addition to its ornamental value, Alcea rosea has a number of traditional medicinal uses. The flowers, leaves, and roots have been used in herbal medicine for their emollient, demulcent, and diuretic properties. The plant is also used in traditional Chinese medicine, where it is known as mu dan pi.

Cultivars

There are many cultivars of Alcea rosea, selected for their flower colour, size, and form. Some of the most popular include 'Chater's Double', 'Majorette', and 'Nigra'.

Pests and diseases

Alcea rosea is susceptible to a number of pests and diseases, including rust, leaf spot, and aphids. Good garden hygiene and regular inspection can help to prevent these problems.

See also

• List of Alcea species
• Malvaceae
• Cottage garden

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