Alcea rosea
Alcea rosea | |
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Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Rosids |
Order: | Malvales |
Family: | Malvaceae |
Genus: | Alcea |
Species: | A. rosea
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Binomial name | |
Alcea rosea | |
Synonyms[1] | |
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Alcea rosea, the common hollyhock, is an
Cultivation
Alcea rosea is variously described as a
It will grow in a wide range of soils, and can easily reach a height of 8 ft (2.4 m)The flowers are in a range of colours from white to dark red, including pink, yellow and orange. Different colours prefer different soils. The darker red variety seems to favour sandy soils, while the lighter colour seems to favour clay soils.[citation needed] The plants are easily grown from seed, and readily self-seed. However, tender plants, whether young from seed or from old stock, may be wiped out by slugs and snails. The foliage is subject to attack from rust (Puccinia malvacearum), which may be treated with fungicides.[6] Commercial growers have reported that some closely related species (Alcea rugosa and Alcea ficifolia) are resistant to this fungus.[7]
Properties
Growing up to 8 feet tall, this plant usually does not require staking, producing large flowers around 5 inches in diameter. Its leaves are large and heart-shaped. The flowers attract hummingbirds and butterflies.[8]
Pests and diseases
The leaves are vulnerable to
Herbalism
In herbal medicine, hollyhock is believed to be an
Gallery
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In Japan
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Black cultivar 'Nigra'
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'Blacknight'
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In Palestine
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In Sweden.
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ALCEA ROSEA 'spring celebrities white'
References
- ^ a b "Alcea rosea". Tropicos. Missouri Botanical Garden. Retrieved 18 April 2017.
- ^ "Flora of China 12: 267–268. 2007" (PDF). Harvard University. Retrieved 2011-07-21.
- ^ a b "Hollyhock". Cornell University. Retrieved 2011-07-21.
- ^ University of Illinois. Retrieved 2011-07-21.
- ^ "Plant of the Month - Hollyhocks" (PDF). New Mexico State University Master Gardener Newsletter. Archived from the original (PDF) on 2011-10-07. Retrieved 2011-07-21.
- ^ "Hollyhock rust". Cornell University. Archived from the original on 22 June 2009. Retrieved 2009-07-15.
- University of Minnesota Extension. 2005-06-15. Archived from the originalon 2010-03-22. Retrieved 2010-02-05.
- ^ a b "Alcea rosea (single)". missouribotanicalgarden.org. Missouri Botanical Garden. Retrieved 27 February 2022.
- ^ Howard, Michael. Traditional Folk Remedies (Century, 1987) p.155