World Library  
Flag as Inappropriate
Email this Article

Spiraea japonica

Article Id: WHEBN0014121401
Reproduction Date:

Title: Spiraea japonica  
Author: World Heritage Encyclopedia
Language: English
Subject: Spiraeoideae, Pink, Spiraea, Rio Grande Botanic Garden, List of the vascular plants of Britain and Ireland 5, Flora of Ohio, Coleophora spiraeella, Neptis pryeri
Collection:
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Spiraea japonica

Spiraea japonica
Inflorescence
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Rosales
Family: Rosaceae
Genus: Spiraea
Species: S. japonica
Binomial name
Spiraea japonica
L.f.

Spiraea japonica (Japanese spiraea) is a plant in the family Rosaceae.[1] Synonyms for the species name are Spiraea bumalda Burv. and Spiraea japonica var. alpina Maxim.[2]

Description

Spiraea japonica is one of several Spiraea shrubs with alternate, simple leaves, on wiry, freely branching, erect stems. Stems are brown to reddish-brown, round in cross-section and sometimes hairy. The shrub reaches 1.2 m to almost 2 m in height and about the same in width. The deciduous leaves are generally an ovate shape about 2.5 cm to 7.5 cm long, have toothed margins, and alternate along the stem. Clusters of rosy-pink flowers are found at the tips of the branches. The seeds measure about 2.5 mm in length and are found in small lustrous capsules.[2]

It is naturally variable in form and there are many varieties of it in the horticulture trade. So far, nine varieties have been described within the species.[2]

Distribution

Flower of Japanese spiraea in Japan

Spiraea japonica is a deciduous, perennial shrub native to Japan, China, and Korea. Southwest China is the center for biodiversity of the species.[2] It is naturalized throughout much of the Northeast, Southeast, and Midwest areas of the United States, and parts of Canada.[3]

Habitat

A common habitat for S. japonica in general seems to be in riparian areas, bogs, or other wetland habitats. It is found growing along streams, rivers, forest edges, roadsides, successional fields, and power line right-of-ways. It prefers full sun, but can tolerate partial shade. It prefers lots of water during the growing season; however, it cannot tolerate saturated soils for extended periods of time. It prefers a rich, moist loam, but it can grow in a wide variety of soils, including those on the alkaline side.[2]

Uses

Spiraea japonica was introduced in North America as an ornamental landscape plant and first cultivated in the northeastern states around 1870.[3]

Numerous cultivars have been selected for garden use. The tall forms may be grown as hedges, low screens, or foundation shrubs. The low-growing forms can be used as groundcover or in borders. In cultivation in the UK, the following cultivars have gained the Royal Horticultural Society's Award of Garden Merit:-
  • 'Candlelight'[4]      
  • 'Dart's Red'[5]
  • 'Golden Princess'[6]      
  • 'Magic Carpet' [7]

S. japonica has been used as traditional medicine by native people, and extracts from the plants were found to be bioactive.[2]

Invasiveness

Spiraea japonica has become naturalized in North America and occupies habitats similar to those of native spireas. It aggressively invades disturbed areas and forms dense stands that outcompete native species. It often spreads locally when its hardy seeds are transported along watercourses or in fill dirt.[2]

Once established, S. japonica grows quickly and forms dense stands that outcompete much of the existing native herbs and shrubs. The seeds can last for many years in the soil, making its control and the restoration of native vegetation especially difficult. Growing populations will creep into meadows, forest openings, and other sites.[2]

References

  1. ^ "Spiraea japonica". floridata.com. Retrieved 2008-10-08. 
  2. ^ a b c d e f g h "Spiraea japonica (shrub)". Invasive Species Specialist Group. Retrieved 2008-10-08. 
  3. ^ a b "Japanese spiraea". National Park Service. Retrieved 2008-10-08. 
  4. ^ "' 'CandlelightSpiraea japonica"RHS Plant Selector - . Retrieved 16 July 2013. 
  5. ^ "' 'Dart's RedSpiraea japonica"RHS Plant Selector - . Retrieved 16 July 2013. 
  6. ^ "' 'LispGolden Princess Spiraea japonica"RHS Plant Selector - . Retrieved 16 July 2013. 
  7. ^ "' 'WalbumaSpiraea japonica Magic Carpet"RHS Plant Selector - . Retrieved 16 July 2013. 
  8. ^ "' 'NanaSpiraea japonica"RHS Plant Selector - . Retrieved 16 July 2013. 

External links

This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 


Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.