Campanula gentianoides Lam.
Platycodon grandiflorus (from Ancient Greek πλατύς "wide" and κώδων "bell") is a species of herbaceous flowering perennial plant of the family Campanulaceae, and the only member of the genus Platycodon. It is native to East Asia (China, Korea, Japan, and the Russian Far East). It is commonly known as balloon flower (referring to the balloon-shaped flower buds), Chinese bellflower, or platycodon.
Growing to 60 cm (24 in) tall by 30 cm (12 in) wide, it is an herbaceous perennial with dark green leaves and blue flowers in late summer. A notable feature of the plant is the flower bud, which swells like a balloon before fully opening. The five petals are fused together into a bell shape at the base, like its relatives, the campanulas.
Platycodon grandiflorus by Abraham Jacobus Wendel, 1868
This plant is hardy down to −15 °C (5 °F), and can therefore be cultivated in all temperate zones. It dies down completely in winter, reappearing in late spring and flowering in summer. However, plants are widely available from nurseries in full flower from April onwards.
Though the species has blue flowers, there are varieties with white, pink, and purple blooms. In Korea, white flowers are more common. This plant, together with its cultivars 'Apoyama group' and 'Mariesii', have gained the Royal Horticultural Society's Award of Garden Merit.
In Korea, the plant as well as its root are referred to as doraji (도라지). The root, fresh or dried, is one of the most common namul vegetables. It is also one of the most frequent ingredients in bibimbap. Sometimes, rice is cooked with balloon flower root to make doraji-bap. Preparation of the root always involves soaking and washing (usually rubbing it with coarse sea salt and rinsing it multiple times), which gets rid of the bitter taste.
The root is also used to make desserts, such as doraji-jeonggwa. Syrup made from the root, called doraji-cheong (balloon flower root honey), can be used to make doraji-cha (balloon flower root tea). The root can be used to infuse liquor called doraji-sul, typically using distilled soju or other unflavored hard alcohol that has an ABV higher than 30% as a base.
Doraji-muchim (seasoned balloon flower root)
Doraji-jeonggwa (balloon flower root sweets)
Doraji-cha (balloon flower root tea)
The extracts and purified platycoside compounds (saponins) from the roots of Platycodon grandiflorum may exhibit neuroprotective, antimicrobial, anti-inflammatory, anti-cancer, anti-allergy, improved insulin resistance, and cholesterol-lowering properties. Evidence for these potential effects was mainly observed in vitro, with the exception of cholesterol lowering effects documented in vitro and in rats. The lack of efficacy and limited safety data in humans, however, necessitate further research.
The Chinese bellflower (called 桔梗 in Chinese) is also used in traditional Chinese medicine.
In Korea, the roots are commonly used for treating bronchitis, asthma, tuberculosis, diabetes, and other inflammatory diseases.
Ōta Kikyō is another variant used by the Ōta clan.
Doraji taryeong (Korean: 도라지타령) is one of the most popular folk songs in both North and South Korea, and in China among the ethnic Koreans. It is also a well known song in Japan, by the name Toraji (Japanese: トラジ).
It is a folk song originated from Eunyul in Hwanghae Province. However, the currently sung version is classified as a Gyeonggi minyo (Gyeonggi Province folk song), as the rhythm and the melody have changed to acquire those characteristics.
- Hong, Deyuan; Klein, Laura L.; Lammers, Thomas G. "Platycodon grandiflorus". Flora of China. 19 – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
- "Platycodon grandiflorus". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 13 July 2018.
- English Names for Korean Native Plants (PDF). Pocheon: Korea National Arboretum. 2015. p. 578. ISBN 978-89-97450-98-5. Archived from the original (PDF) on 25 May 2017. Retrieved 6 January 2017 – via Korea Forest Service.
- RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 1405332964.
- "RHS Plant Selector - Platycodon grandiflorus". Retrieved 28 May 2013.
- "RHS Plant Selector - Platycodon grandiflorus 'Apoyama group'". Retrieved 28 May 2013.
- "RHS Plant Selector - Platycodon grandiflorus 'Mariesii'". Retrieved 28 May 2013.
- "AGM Plants - Ornamental" (PDF). Royal Horticultural Society. July 2017. p. 79. Retrieved 2 May 2018.
- Nyakudya E.; Jeong JH.; Lee NK.; Jeong YS. (2014) “Platycosides from the Roots of Platycodon grandiflorum and Their Health Benefits.” Preventative Nutrition and Food Science 19 (2): 59-68. PMID 25054103.
- Atkins, E. Taylor (2010). Primitive Selves: Koreana in the Japanese Colonial Gaze, 1910‒1945. Berkeley, CA: University of California Press. pp. 163–164. ISBN 9780520266742.
well-known Korean folk melody, "Toraji T'aryŏng" (known simply as "Toraji" in Japanese)
- Han, Manyǒng. "도라지타령" [Doraji taryeong]. Encyclopedia of Korean Culture (in Korean). Academy of Korean Studies. Retrieved 7 January 2017.
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