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Summary
Physical Characteristics
Swertia japonica is a ANNUAL growing to 0.2 m (0ft 8in). The species is hermaphrodite (has both male and female organs).
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in semi-shade (light woodland). It prefers moist or wet soil.
UK Hardiness Map
US Hardiness Map
Synonyms
Plant Habitats
Woodland Garden Dappled Shade; Shady Edge; Bog Garden;
Edible Uses
Edible Parts: Leaves
Edible Uses:
The leaves might be edible cooked as a potherb[177].
References More on Edible Uses
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.
Appetizer Bitter Stomachic
The whole plant is bitter and stomachic[174]. It is used in the treatment of digestive disorders.
References More on Medicinal Uses
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Other Uses
References More on Other Uses
Cultivation details
We have very little information on this species and do not know if it will be hardy in Britain, though judging by its native range it should succeed outdoors in many parts of this country. The plant is monocarpic, living for one to three years before flowering and dying after it flowers[58]. It is cultivated as a medicinal herb in China[238].It requires a symbiotic relationship with soil bacteria[174]. The following notes are based on the general needs of the genus. Succeeds in a moist humus-rich soil in damp light woodlands, streamsides or the bog garden[200]. Grows best in areas with cool summers[200].
References Carbon Farming Information and Carbon Sequestration Information
Temperature Converter
Type a value in the Celsius field to convert the value to Fahrenheit:
Fahrenheit:
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Plant Propagation
Seed - sow spring in temperatures not exceeding 10°c in a humus-rich medium[200]. When they are large enough to handle, prick the seedlings out into individual pots and plant them Tu in early summer.
Other Names
If available other names are mentioned here
Native Range
TEMPERATE ASIA: Korea, Japan (Hokkaidô, Honshu, Kyushu, Ryukyu Islands, Shikoku)
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
(Roem.&Schult.)Makino.
Botanical References
58
Links / References
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