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Hypericum ascyron - L.

Common Name Great Saint John's Wort
Family Hypericaceae
USDA hardiness 3-7
Known Hazards None known
Habitats Grassy places in the mountains of N. Japan[58].
Range N. America - Quebec to Manitoba, south to Kansas, Iowa and Missouri. E. Asia.
Edibility Rating    (1 of 5)
Other Uses    (0 of 5)
Weed Potential No
Medicinal Rating    (2 of 5)
Care (info)
Fully Hardy Moist Soil Semi-shade Full sun
Hypericum ascyron Great Saint John


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Hypericum ascyron Great Saint John
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Summary


Physical Characteristics

 icon of manicon of flower
Hypericum ascyron is a PERENNIAL growing to 1.5 m (5ft).
See above for USDA hardiness. It is hardy to UK zone 3. It is in flower from July to August. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects. The plant is self-fertile.
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

H. pyramidatum. Ait.

Plant Habitats

 Cultivated Beds;

Edible Uses

Edible Parts: Leaves  Shoots
Edible Uses: Tea

Young leaves, shoot tips and flowering buds - cooked[105, 177]. The leaves are a tea substitute[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.
Depurative  Emmenagogue  Febrifuge  Poultice  Stings  VD  Vulnerary

The fruit is emmenagogue and is also used to treat skin complaints and gonorrhoea[218]. The whole plant is depurative, febrifuge, poultice and vulnerary[147, 218]. A decoction is used in the treatment of boils and abscesses, headaches and stomach ache and vomiting[147]. The root is considered to be specific for use in treating the first stages of consumption[257]. A powder made from the boiled root has been applied as a poultice to draw the poison out of a snake bite[257].

References   More on Medicinal Uses

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Other Uses

None known

Special Uses

References   More on Other Uses

Cultivation details

Easily grown in any reasonably good well-drained but moisture retentive soil[1]. Succeeds in sun or semi-shade but flowers better in a sunny position[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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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,Edible Shrubs, Woodland Gardening, and Temperate Food Forest Plants. Our new book is Food Forest Plants For Hotter Conditions (Tropical and Sub-Tropical).

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Plant Propagation

Seed - sow spring in a greenhouse and only just cover the seed. The seed usually germinates in 1 - 3 months at 10°c. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts. Division in spring. Very easy, larger clumps can be replanted direct into their permanent positions, though it is best to pot up smaller clumps and grow them on in a cold frame until they are rooting well. Plant them out in the spring.

Other Names

If available other names are mentioned here

Native Range

TEMPERATE ASIA: Russian Federation (Buryatia, Gorno-Altay, Hakasija, Respublika, Tyva, Respublika, Altay, Krasnoyarsk, Chita, Irkutsk, Kemerovskaja oblast), Kazakhstan (east), Mongolia, Russian Federation (Kurile Islands, Habarovskij kraj, Primorye, Amur, Kamcatskij kraj, Sakhalin), China (Anhui Sheng, Fujian Sheng, Gansu Sheng, Guangdong Sheng, Guangxi Zhuangzu Zizhiqu, Guizhou Sheng, Hainan Sheng, Hebei Sheng, Heilongjiang Sheng, Henan Sheng, Hubei Sheng, Hunan Sheng, Jiangsu Sheng, Jiangxi Sheng, Jilin Sheng, Liaoning Sheng, Nei Mongol Zizhiqu, Ningxia Huizi Zizhiqu, Shaanxi Sheng, Shandong Sheng, Shanxi Sheng, Sichuan Sheng, Xinjiang Uygur Zizhiqu, Yunnan Sheng, Zhejiang Sheng), Korea, Japan (Hokkaidô, Honshu, Kyushu, Shikoku), Taiwan TROPICAL ASIA: Vietnam (north) NORTHERN AMERICA: Canada (Québec, Ontario), United States (Connecticut, Indiana, Maine, Massachusetts, Michigan, New Hampshire, New York, Ohio, Pennsylvania, Vermont, Illinois, Iowa, Minnesota, Wisconsin, Maryland)

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 :

Related Plants
Latin NameCommon NameHabitHeightHardinessGrowthSoilShadeMoistureEdibleMedicinalOther
Hypericum androsaemumTutsan, Sweet-amber, St. JohnswortShrub1.0 5-10 FLMHSNDM013
Hypericum attenuatum Perennial0.6 -  LMHSNDM10 
Hypericum bellum Shrub1.0 5-9  LMHSNM012
Hypericum calycinumRose Of Sharon, Aaron's beard, Creeping Aron's Beard St. JohnswortShrub0.3 5-10 FLMHFSNDM003
Hypericum erectum Perennial0.6 5-9  LMHSNM11 
Hypericum forrestii Shrub2.0 4-8  LMHSNM002
Hypericum hypericoidesSt. Andrews CrossShrub1.2 5-9  LMSNDM02 
Hypericum japonicumMatted St. John's WortAnnual/Perennial0.5 -  LMHSNMWe02 
Hypericum kamtschaticum Perennial0.3 -  LMHSNM10 
Hypericum monogynum Shrub0.7 8-11  LMHSNM02 
Hypericum patulumGoldencup St. JohnswortShrub1.0 6-7 MLMHSNM013
Hypericum perforatumSt. John's Wort, Common St. JohnswortPerennial0.9 3-10  LMHSNDM242
Hypericum sampsonii Perennial0.6 8-11  LMHSNM12 

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

L.

Botanical References

58200

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Subject : Hypericum ascyron  
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