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Xanthorhiza simplicissima
Xanthorhiza simplicissima
After a leafless winter, it produced some very strange flowers in early April. It should grow, but it's not spectacular for now.
Annick L., 12/04/2021
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Dispatch by letter from €3.90.
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This plant carries a 24 months recovery warranty
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We guarantee the quality of our plants for a full growing cycle, and will replace at our expense any plant that fails to recover under normal climatic and planting conditions.
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Xanthorrhiza simplicissima, also known as 'Yellow Root', is a hardy shrub native to the eastern United States, a curious woody and exuberant cousin of buttercups. This unusual plant forms a dense ground cover, remarkable for its autumnal colours, which gradually change from yellow to red and then to purple in the autumn; numerous tan-yellow leaves persist on the branches during winter. It is also distinguished by its original spring flowering, with purple-brown, satin-like star-shaped flowers clustered together. To be grown in partial shade, near a water source or in a heathland bed, it will astonish and delight collectors of rare plants.
Xanthorrhiza simplicissima belongs to the buttercup family, along with clematis. It is used as a dye and medicinal plant native to a vast area located in the eastern USA, from Maine to Texas. It appreciates being situated close to water sources, ditches, and damp woods, far from the scorching sun. This shrub has a spreading and bushy habit, wider than it is tall, and can reach up to 90 cm (35 in) in height and 1.2 m (4 ft) in diameter under optimal conditions. The branches are covered with yellow bark and bear mono- or bi-pinnate leaves, which are light green and shiny and take on very beautiful colours in the autumn. Flowering occurs in April-May, at the tips of the stems, in the form of dense clusters of small star-shaped flowers. It is followed by the formation of dry and yellowish follicles.
A highly colourful plant for partial shade and moist soils, Xanthorrhiza simplicissima is used in humid and shaded areas, near water sources or at the edge of woodland, alongside brightly coloured heathland plants such as Diosma hirsuta 'Pink Fountain', variegated hostas, or even a Nandina Fire Power. A backdrop composed of Loropetalum chinense, Pieris Forest Flame or Mountain Fire, Pseudowintera colorata, and Kalmia latifolia will complete this colourful scene.
The bitter yellow roots of this plant were once used by local populations to extract dye. It has been used for a long time by the Cherokee people in particular for its antibiotic properties.
Xanthorhiza simplicissima in pictures
Plant habit
Flowering
Foliage
Botanical data
Xanthorhiza simplicissima should be planted in spring or autumn, in partial shade, in soil that is rather acidic (pH <6.8), sandy or humus-rich and which remains very moist or even damp. Choose a shady or partially shaded location. Pruning in early spring will give this exuberant shrub a neater appearance and a more compact habit.
Planting period
Intended location
Care
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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).
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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 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:
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.