|Flowers and foliage|
Other common names include baby's breath spirea. The Japanese common name is yuki-yanagi.
Growing to 1.5 m (4.9 ft) tall and broad, Spiraea thunbergii is a small, long-lived shrub with thin, flexible stems. The flowers are white, borne in abundance in spring and early summer. The alternate, simple, almost linear leaves are semi-deciduous.
This plant produces phytotoxic cis-cinnamoyl glucosides and cis-cinnamic acid. The plant-growth inhibition characteristics can be used against diverse species as lettuce (Lactuca sativa), pigweed (Amaranthus retroflexus), red clover (Trifolium pratense), timothy (Phleum pratense), and bok choy (Brassica rapa var chinensis). The characteristics of these natural chemicals indicate a potential role of cis-cinnamic acid and its glucosides as allelochemicals (chemicals, released from plants, that cause an interaction between plants and other living organisms) for use as plant growth regulators and weed suppression in agricultural fields and in natural ecosystems.
Spiraea thunbergii is grown as an ornamental plant in temperate regions. It is hardy and easy to grow in a sunny mixed border. In the UK it has gained the Royal Horticultural Society’s Award of Garden Merit.
This species forms an interspecific hybrid with Spiraea japonica L. fil.
In the horticultural trade one can obtain several varieties of Spiraea thunbergii, such as 'Mt Fuji' (white flowers), 'Ogon' (bright yellow-green leaves and white flowers), 'Mellow yellow' and 'Fugino pink'
- "RHS Plantfinder - Spiraea thunbergii". Retrieved 16 November 2018.
- USDA, NRCS (n.d.). "Spiraea thunbergii". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 27 November 2015.
- Harrison, Lorraine (2012). RHS Latin for Gardeners. United Kingdom: Mitchell Beazley. ISBN 184533731X.
- Phytochemistry. 2004 Mar., v. 65, no. 6 p. 731-739 Archived 2008-01-29 at the Wayback Machine
- Journal of chemical ecology 2005, vol. 31, no3, pp. 591-601
- "AGM Plants - Ornamental" (PDF). Royal Horticultural Society. July 2017. p. 99. Retrieved 16 November 2018.
- Horticultural Research (Japan)(2006): Floral Characteristics of Interspecific Hybrids between Spiraea thunbergii Sieb. ex Blume. and S. japonica L. fil.
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