Our grateful thanks to those who have donated recently to help keep our revenues healthy. This has enabled us to continue to extend and enhance our plants database, and we will soon launch our latest reference book – on plants for food forests in Mediterranean climates. Please continue to support PFAF throughout 2025. More >>>

Hypericum sampsonii - Hance.

Common Name

Family

Hypericaceae

USDA hardiness

8-11

Known Hazards

There is a report that use of this plant can harm the foetus of pregnant females[147].

Habitats

Wasted slopes and roadsides in China[147]. Thickets, streamsides, grassy places, roadsides and cultivated margins at elevations of 100 - 1700 metres[266].

Range

E. Asia - China, Japan, India.

Edibility Rating

(1 of 5)

Other Uses

(0 of 5)

Weed Potential

Medicinal Rating

(2 of 5)

Care (info)

Translate this page:

Summary

Physical Characteristics

Hypericum sampsonii is a PERENNIAL growing to 0.6 m (2ft).
See above for USDA hardiness. It is hardy to UK zone 9. It is in flower from July to August, and the seeds ripen from August to October. 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

Plant Habitats

Cultivated Beds;

Edible Uses

Edible Parts: Leaves
Edible Uses:

Edible young leaves and plant tops[105, 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.
Anodyne Depurative Emmenagogue Haemolytic Vermifuge

The plant is anodyne, anticoagulant, depurative, emmenagogue, haemolytic, vermifuge[147, 218]. It stimulates the circulation and can also harm the foetus[147]. Use with caution.

References More on Medicinal Uses

The Bookshop: Edible Plant Books

Our Latest books on Perennial Plants For Food Forests and Permaculture Gardens in paperback or digital formats.

Edible Tropical Plants

Food Forest Plants for Hotter Conditions: 250+ Plants For Tropical Food Forests & Permaculture Gardens.

Edible Temperate Plants

Plants for Your Food Forest: 500 Plants for Temperate Food Forests & Permaculture Gardens.

PFAF have eight books available in paperback and digital media.

More Books

PFAF have eight books available in paperback and digital formats. Browse the shop for more information.

Shop Now

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]. This plant is unlikely to be very hardy in Britain, though it might succeed outdoors in the milder areas of the country[200].

References Carbon Farming Information and Carbon Sequestration Information

Temperature Converter

Type a value in the Celsius field to convert the value to Fahrenheit:

Celsius 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,Edible Shrubs, Woodland Gardening, and Temperate Food Forest Plants. Our new book is Food Forest Plants For Hotter Conditions (Tropical and Sub-Tropical).

Shop Now

Plant Propagation

Seed - sow spring in a greenhouse. Germination usually takes place within 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[111]. 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: China (Anhui Sheng, Fujian Sheng, Gansu Sheng, Guangdong Sheng, Guangxi Zhuangzu Zizhiqu, Guizhou Sheng, Henan Sheng, Hubei Sheng, Hunan Sheng, Jiangsu Sheng, Jiangxi Sheng, Shaanxi Sheng, Sichuan Sheng, Yunnan Sheng, Zhejiang Sheng), Japan (Kyushu), Taiwan TROPICAL ASIA: Myanmar (north), Vietnam (north)

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 Name	Common Name	Habit	Height	Hardiness	Growth	Soil	Shade	Moisture	Edible	Medicinal	Other
Hypericum androsaemum	Tutsan, Sweet-amber, St. Johnswort	Shrub	1.0	5-10	F	LMH	SN	DM	0	1	3
Hypericum ascyron	Great Saint John's Wort	Perennial	1.5	3-7		LMH	SN	M	1	2
Hypericum attenuatum		Perennial	0.6	-		LMH	SN	DM	1	0
Hypericum bellum		Shrub	1.0	5-9		LMH	SN	M	0	1	2
Hypericum calycinum	Rose Of Sharon, Aaron's beard, Creeping Aron's Beard St. Johnswort	Shrub	0.3	5-10	F	LMH	FSN	DM	0	0	3
Hypericum erectum		Perennial	0.6	5-9		LMH	SN	M	1	1
Hypericum forrestii		Shrub	2.0	4-8		LMH	SN	M	0	0	2
Hypericum hypericoides	St. Andrews Cross	Shrub	1.2	5-9		LM	SN	DM	0	2
Hypericum japonicum	Matted St. John's Wort	Annual/Perennial	0.5	-		LMH	SN	MWe	0	2
Hypericum kamtschaticum		Perennial	0.3	-		LMH	SN	M	1	0
Hypericum monogynum		Shrub	0.7	8-11		LMH	SN	M	0	2
Hypericum patulum	Goldencup St. Johnswort	Shrub	1.0	6-7	M	LMH	SN	M	0	1	3
Hypericum perforatum	St. John's Wort, Common St. Johnswort	Perennial	0.9	3-10	M	LMH	SN	DM	2	4	3

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.