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Summary
Bloom Color: Blue. Main Bloom Time: Late summer, Mid summer. Form: Upright or erect.
Physical Characteristics

Platycodon grandiflorus is a PERENNIAL growing to 0.5 m (1ft 8in) by 0.4 m (1ft 4in) at a medium rate.
See above for USDA hardiness. It is hardy to UK zone 4 and is not frost tender. It is in flower from July to August, and the seeds ripen from August to September. The species is hermaphrodite (has both male and female organs).
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist soil.
UK Hardiness Map
US Hardiness Map
Synonyms
Campanula glauca. Thunb. C. grandiflora.
Habitats
Cultivated Beds;
Edible Uses
Edible Parts: Leaves Root
Edible Uses: Condiment
Young leaves - cooked[177]. The radical leaves are said to be slightly toxic so only the top leaves should be used. Old leaves are powdered and used as a flavouring. Root - cooked[177]. Eaten in soups as a tonic vegetable[238]. It is also peeled and pickled or preserved in sugar[218]. A nutritional analysis is available[218].
References More on Edible Uses
Composition
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Figures in grams (g) or miligrams (mg) per 100g of food.
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Root (Dry weight)
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- 379 Calories per 100g
- Water : 0%
- Protein: 3.2g; Fat: 1.2g; Carbohydrate: 93.7g; Fibre: 11.7g; Ash: 2g;
- Minerals - Calcium: 306mg; Phosphorus: 249mg; Iron: 8.2mg; Magnesium: 0mg; Sodium: 0mg; Potassium: 0mg; Zinc: 0mg;
- Vitamins - A: 0mg; Thiamine (B1): 0.13mg; Riboflavin (B2): 0.47mg; Niacin: 10.3mg; B6: 0mg; C: 0mg;
- Reference: [ 218]
- Notes:
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Medicinal Uses
Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.
Anthelmintic Anticholesterolemic Antiphlogistic Antitussive Astringent Expectorant Haemolytic Hypoglycaemic
Sedative Stomachic Tonic
This species has a history of herbal use in China going back over 2,000 years and modern clinical tests have demonstrated its efficacy[218, 238]. It is widely used there in patent remedies and is also made into cough tablets[238]. The root contains saponins and is anthelmintic, antiasthmatic, anticholesterolemic, antiphlogistic, antitussive, astringent, carminative, expectorant, haemolytic, hypoglycaemic, sedative, stomachic, tonic and vermifuge. It lowers blood sugar and cholesterol levels in the liver and inhibits the release of histamine[116, 147, 174, 176, 178, 218, 238, 279]. It is used internally in the treatment of coughs with profuse phlegm, colds, bronchitis, pleurisy, pulmonary abscesses and throat infections[176, 238]. It is also used to treat hypertension and diabetes in Korea[279]. The root of plants 2 - 3 years old are harvested in the spring or autumn, peeled and used fresh or dried[238].
References More on Medicinal Uses
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Other Uses
References More on Other Uses
Cultivation details
Landscape Uses:Border, Container, Rock garden, Specimen. An easily grown plant, it succeeds in any good well-drained garden soil but prefers a light more or less sandy soil in a sunny position or light dappled shade[200]. Plants are hardy to about -15°c[200]. Another report says it is hardy to -20°c[187]. A very ornamental and long-lived plant[1, 233], there are several named forms[238]. It is cultivated, especially in China, as a medicinal plant[61, 238]. This species has brittle roots and strongly resents root disturbance. It should be planted out in its permanent position as soon as possible, and preferably when dormant in the winter[111, 238]. Special Features:
Suitable for cut flowers. The plant is heat tolerant in zones 9 through 1. (Plant Hardiness Zones show how well plants withstand cold winter temperatures.
Plant Heat Zones show when plants would start suffering from the heat.
The Plant Heat Zone map is based on the number of "heat days" experienced in a given area where the temperature climbs to over 86 degrees F (30°C).
At this temperature, many plants begin to suffer physiological damage. Heat Zones range from 1 (no heat days) to 12 (210 or more heat days).
For example Heat Zone. 11-1 indicates that the plant is heat tolerant in zones 11 through 1.) For polyculture design as well as the above-ground architecture (form - tree, shrub etc. and size shown above) information on the habit and root pattern is also useful and given here if available. The plant growth habit is a clumper with limited spread [1-2]. The root pattern is a tap root similar to a carrot going directly down [1-2].
References Carbon Farming Information and Carbon Sequestration Information
Temperature Converter
Type a value in the Celsius field to convert the value to Fahrenheit:
Fahrenheit:
The PFAF Bookshop
Plants For A Future have a number of books available in paperback and digital form. Book titles include Edible Plants, Edible Perennials, Edible Trees, and Woodland Gardening. Our new book to be released soon is Edible Shrubs.
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Propagation
Seed - sow spring in a cold frame[111]. Free and quick germination[K]. Prick out the seedlings into individual pots when they are large enough to handle and plant them out in the winter when the plants are dormant[238, K]. Basal cuttings of non-flowering shoots in spring, preferably with a piece of root attached[188]. Harvest the shoots with plenty of underground stem when they are about 8 - 10cm above the ground. Pot them up into individual pots and keep them in light shade in a cold frame or greenhouse until they are rooting well. Plant them out in the summer.
Other Names
If available other names are mentioned here
Found In
Countries where the plant has been found are listed here if the information is available
Weed Potential
Right plant wrong place. We are currently updating this section.
Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.
Conservation Status
IUCN Red List of Threatened Plants Status :
Growth: S = slow M = medium F = fast. Soil: L = light (sandy) M = medium H = heavy (clay). pH: A = acid N = neutral B = basic (alkaline). Shade: F = full shade S = semi-shade N = no shade. Moisture: D = dry M = Moist We = wet Wa = water.
Expert comment
Author
(Jacq.)A.DC.
Botanical References
58200
Links / References
For a list of references used on this page please go here
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