Hollyhock

Hollyhock Plant Information


Hollyhock grows in the following 41 states:

Colorado, Connecticut, District Of Columbia, Georgia, Idaho, Illinois, Indiana, Kansas, Kentucky, Maryland, Minnesota, Mississippi, Montana, Nebraska, New Mexico, North Carolina, Pennsylvania, South Dakota, Utah, Vermont, Wisconsin, Wyoming, Oregon, West Virginia, California, Delaware, Florida, Iowa, Massachusetts, Michigan, Missouri, Nevada, New Jersey, New York, North Dakota, Ohio, Rhode Island, Tennessee, Texas, Virginia, Washington

Alcea, commonly known as hollyhocks, is a genus of about 60 species of flowering plants in the mallow family Malvaceae. They are native to Asia and Europe. The single species of hollyhock from the Western Hemisphere, the streambank wild hollyhock, belongs to a different genus.

Hollyhocks are annual, biennial, or perennial plants usually taking an erect, unbranched form. The herbage usually has a coating of star-shaped hairs. The leaf blades are often lobed or toothed, and are borne on long petioles. The flowers may be solitary or arranged in fascicles or racemes. The notched petals are usually over three centimeters wide and may be pink, white, purple, or yellow. The fruit is a schizocarp, a dry disc divided into over 15 sections that contain seeds.
There are about 60 species of Alcea, including:
Hollyhocks are popular garden ornamental plants. They are easily grown from seed. Breeds with red flowers attract hummingbirds and butterflies. Cultivars have been bred, especially from A. rosea. They include the double-flowered 'Chater's Double', the raspberry-colored 'Creme de Cassis', and 'The Watchman', which has dark, nearly black, maroon flowers.
The stems of hollyhocks can be used as firewood, and the roots have been used medicinally.
Alcea species are used as food plants by the larvae of some Lepidoptera species including Bucculatrix quadrigemina and Vanessa cardui, the Painted Lady.
The mallow flea beetle (Podagrica fuscicornis) is a pest that makes tiny holes in the leaves. Cutworms, aphids, and capsid bugs use the plant as a food source in hotter and drier conditions. A number of weevils use A. rosea as their host plant, including Rhopalapion longirostre, Alocentron curvirostre, and Aspidapion validum.
The plants are also susceptible to the pathogenic fungus Puccinia malvacearum, the hollyhock rust.
A hollyhock flower, known in Japan as aoi (), was incorporated into the official seal (mon) of the Tokugawa shogunate in Japan, and through this influence has maintained importance in modern Japanese culture. For example, it inspired the name and symbol of Mito HollyHock, a professional soccer club in a city formerly led by the Tokugawa family. The Aoi Matsuri (Hollyhock Festival) is one of the three main festivals of the city of Kyoto.

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