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Summary
Update 9 May 2022: Jeffersonia dubia (Maxim.) Benth. & Hook. f. ex Baker & Moore is a synonym of Plagiorhegma dubium Maxim.
Physical Characteristics
Jeffersonia dubia is a PERENNIAL growing to 0.3 m (1ft) by 0.2 m (0ft 8in) at a slow rate.
See above for USDA hardiness. It is hardy to UK zone 5. It is in flower from May to June. The species is hermaphrodite (has both male and female organs).
Suitable for: light (sandy) and medium (loamy) soils and prefers well-drained soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in full shade (deep woodland) or semi-shade (light woodland). It prefers moist soil.
UK Hardiness Map
US Hardiness Map
Synonyms
Plagiorhegma dubium Maxim.
Plant Habitats
Woodland Garden Dappled Shade; Shady Edge; not Deep Shade;
Edible Uses
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.
Cancer Febrifuge Stomachic
The root is febrifuge and stomachic[218]. It also contains the anti-tumour compound berberine[218].
References More on Medicinal Uses
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Other Uses
A woodland rock garden plant from Korea long been cultivated in Japan.
Special Uses
References More on Other Uses
Cultivation details
Prefers a light sandy, peaty or humus-rich woodland soil and a rather shady situation[1, 130, 280]. Suitable for a choice position in a cool leafy soil[187]. This species is hardy to at least -20°c[187]. Plants have an extensive root system and resent disturbance[188]. They should be pot-grown and planted into their permanent positions as soon as possible They should be pot-grown and planted into their permanent positions as soon as possible
References Carbon Farming Information and Carbon Sequestration Information
Temperature Converter
Type a value in the Celsius field to convert the value to 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 - best sown as soon as it is ripe in a cold frame[200]. Sow stored seed as soon as possible in late winter or the spring. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for at least their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts. Division in early spring[200].
Other Names
If available other names are mentioned here
Asian Twinleaf
Native Range
TEMPERATE ASIA: Russian Federation (Primorye), China (Jilin Sheng), Korea
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
(Maxim.)Benth.&Hook.
Botanical References
200280
Links / References
For a list of references used on this page please go here
Readers comment
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Subject : Jeffersonia dubia
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