Jeffersonia diphylla
Jeffersonia diphylla
Jeffersonia diphylla
Jeffersonia diphylla
Jeffersonia diphylla
Jeffersonia diphylla
Jeffersonia diphylla
Jeffersonia diphylla
Twinleaf, Rheumatism Root, Blue Twinleaf, Helmet Pod
Planted a small root cutting last summer in a terracotta pot left outside all winter, finally it's poking its head out. Beautiful delicate leaves, I'm waiting for it to bloom.
nanu, 14/03/2024
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Description
Jeffersonia diphylla is a small perennial native to cool North American woodlands. This hardy plant it noted for its decorative foliage and early spring flowering. It slowly spreads on the ground, forming a beautiful carpet of bright green leaves divided into two identical leaflets. Its small star-shaped white flowers emerge from the ground in early spring, before the appearance of new leaves. An elegant ground cover to dress the base of deciduous trees and shrubs or partially shaded rockeries, in moist soil.
Jeffersonia diphylla belongs to the Berberidaceae family, the same family as epimediums or fairy wings. It is a deciduous perennial native to the eastern United States, found in an area ranging from Minnesota to New York and south to Tennessee. It is found in deciduous forests, most often in ravines or on moist rocky slopes, in soils with a tendency towards limestone. It is a non-invasive creeping rhizomatous plant, which slowly forms 10cm (4in) tall carpets. The flowering occurs in April, before deciduous trees leaf out. Small flowers emerge from the ground. They are cup-shaped, 2.5cm (1in) in diameter, and composed of 8 pure white petals, surrounding a yellow heart. The foliage emerges directly from the rhizome and soil, usually just after flowering. The young shoots are tinged with bronze and brown. They unfold into leaves divided into two perfectly identical semi-ovate leaflets, arranged symmetrically with respect to the petiole. The curious fruit is a green pear-shaped capsule with a jointed top. The fruits ripen in summer. The plant reaches a height of 45cm (18in) and enters dormancy during this fruiting period. The seeds are dispersed by ants through a process known as myrmecochory.
Jeffersonia diphylla thrives in partially shaded conditions, under deciduous trees, in humus-rich, moisture-retentive soils. This allows it to be used to dress the base of deciduous trees and shrubs. It is hardy to at least -15°C (5°F) and enjoys both sun in spring and shade in summer. This perennial pairs well with fairy wings, liverworts, hellebores, ferns, cyclamen, trilliums, and Japanese anemones.
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Jeffersonia diphylla in pictures
Flowering
Foliage
Plant habit
Botanical data
Jeffersonia
diphylla
Berberidaceae
Twinleaf, Rheumatism Root, Blue Twinleaf, Helmet Pod
North America
Planting and care
Jeffersonia diphylla thrives in partial shade or not too dense shade, ideally under deciduous trees, in well-drained, loose soil enriched with compost, which is slightly acidic to limestone. The soil should not be too dry, even in summer. Naturally rocky soils are well tolerated, as are semi-shady rock gardens. Monitor watering during very dry summers, mulch if necessary, and take care to protect the plant from slugs and other snails.
Planting period
Intended location
Care
Planting & care advice
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Hardiness is the lowest winter temperature a plant can endure without suffering serious damage or even dying. However, hardiness is affected by location (a sheltered area, such as a patio), protection (winter cover) and soil type (hardiness is improved by well-drained soil).
The flowering period indicated on our website applies to countries and regions located in USDA zone 8 (France, the United Kingdom, Ireland, the Netherlands, etc.)
It will vary according to where you live:- In zones 9 to 10 (Italy, Spain, Greece, etc.), flowering will occur about 2 to 4 weeks earlier.
- In zones 6 to 7 (Germany, Poland, Slovenia, and lower mountainous regions), flowering will be delayed by 2 to 3 weeks.
- In zone 5 (Central Europe, Scandinavia), blooming will be delayed by 3 to 5 weeks.
In temperate climates, pruning of spring-flowering shrubs (forsythia, spireas, etc.) should be done just after flowering.
Pruning of summer-flowering shrubs (Indian Lilac, Perovskia, etc.) can be done in winter or spring.
In cold regions as well as with frost-sensitive plants, avoid pruning too early when severe frosts may still occur.
The planting period indicated on our website applies to countries and regions located in USDA zone 8 (France, United Kingdom, Ireland, Netherlands).
It will vary according to where you live:
- In Mediterranean zones (Marseille, Madrid, Milan, etc.), autumn and winter are the best planting periods.
- In continental zones (Strasbourg, Munich, Vienna, etc.), delay planting by 2 to 3 weeks in spring and bring it forward by 2 to 4 weeks in autumn.
- In mountainous regions (the Alps, Pyrenees, Carpathians, etc.), it is best to plant in late spring (May-June) or late summer (August-September).
The harvesting period indicated on our website applies to countries and regions in USDA zone 8 (France, England, Ireland, the Netherlands).
In colder areas (Scandinavia, Poland, Austria...) fruit and vegetable harvests are likely to be delayed by 3-4 weeks.
In warmer areas (Italy, Spain, Greece, etc.), harvesting will probably take place earlier, depending on weather conditions.
The sowing periods indicated on our website apply to countries and regions within USDA Zone 8 (France, UK, Ireland, Netherlands).
In colder areas (Scandinavia, Poland, Austria...), delay any outdoor sowing by 3-4 weeks, or sow under glass.
In warmer climes (Italy, Spain, Greece, etc.), bring outdoor sowing forward by a few weeks.