Vernonia crinita - Ironweed
Vernonia crinita - Ironweed
Vernonia crinita - Ironweed
Vernonia crinita - Ironweed
Vernonia crinita - Ironweed
Vernonia crinita - Ironweed
Vernonia crinita Vernonia crinita
Arkansas Ironweed
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Description
Vernonia crinita, also known as Vernone, is a tall perennial plant with a slightly untidy appearance that works well in natural gardens or near water features. Its leafy, straight and sturdy stems bear beautiful corymbs of deep pink flowers with a hint of purple from the second half of summer. Related to asters and resembling eupatoriums, this North American species can withstand harsh winters and scorching summers, as long as the soil does not completely dry out.
Vernonia crinita belongs to the Asteraceae family. It is a majestic wild plant, native to North America, where it grows in moist meadows and can reach heights of up to 3m (10ft). In less favourable soil conditions, this herbaceous perennial with a woody base will not exceed 2m (7ft) high and will cover an area of 50cm (20in) on the ground. Its growth is quite fast, but it takes two years to establish. It forms a clump of tall and sturdy, straight, sparsely branched stems, bearing alternate, simple, lance-shaped, dark green leaves. Flowering occurs from July-August to September-October, earlier or later depending on the climate. Vernonia produces lots of fluffy, rust-coloured flowers, grouped in terminal corymbs at the ends of the stems. The flowers open all at once, and last a long time, attracting a large number of butterflies in a magnificent spectacle. The vegetation of the Vernonia is deciduous, emerging from the ground in spring and drying up in late autumn.
This very hardy plant is easy to grow and pairs well with many other plants to create magnificent autumn compositions. On pond edges, it can be combined with eupatoriums, Lythrum salicaria, Filipendula, Euphorbia palustris, Vervain hastata... In a more wild style, it blends well with large autumn asters and tall grasses such as Miscanthus, Panicum, Stipa...
Vernonia crinita - Ironweed in pictures
Flowering
Foliage
Plant habit
Botanical data
Vernonia
crinita
Vernonia crinita
Asteraceae
Arkansas Ironweed
North America
Planting and care
Vernonia crinita is an excellent, hardy, perennial plant that should be better known. It thrives in sunny locations, in moist, rich and deep, even clayey soils if they are loose.
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.
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