

Proboscidea louisianica
Proboscidea louisianica
Proboscidea louisianica
Unicorn plant, Ram's horn, Devil's claw, Proboscis flower, Elephant tusk
Quick and in line with my expectations.
Serge N., 24/08/2018
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View all →This plant carries a 6 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.
Seed-only orders are dispatched by sealed envelope. The delivery charge for seed-only orders is €3.90.
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Description
Proboscidea louisianica is an herbaceous annual with the appearance of an orchid and a strong fragrance. Its claw-shaped fruit is what gave it its common name of devil's claw.
Proboscidea louisianica is a member of the Pedaliaceae family. It is native to the southern United States and Mexico. It is particularly found in Louisiana. The orchid-like flower consists of 5 fused and irregular petals forming a trumpet with undulating edges. It blooms from July to September. Both the calyx and leaves are hairy. The highly fragrant flowers measure 5cm (2in) in diameter and are white with pinkish-purple to violet spots. The throat is often speckled with purple.
The fruit is what draws the eye, and is the reason this plant has so many unique nicknames! The fruits form a double, strongly curved claw. When still green, they can be pickled and consumed. Once dried, they take on a characteristic hooked or claw-like appearance. These dehiscent capsules tend to cling to anything that brushes against them, dispersing their seeds far and wide.
The devil's claw is a highly branched spreading annual herbaceous plant. It reaches a height of 50 to 60cm (20 to 24in). It grows very rapidly under favourable conditions. Its foliage is rather heart-shaped and very hairy.
The devil's claw prefers sheltered locations that are warm and sunny. It thrives in light, organic-rich soils. It will look stunning in pots, or as a standalone plant to fully appreciate its flowering from July to September... and of course, its spectacular fruiting.
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Flowering
Foliage
Plant habit
Botanical data
Proboscidea
louisianica
Martyniacée
Unicorn plant, Ram's horn, Devil's claw, Proboscis flower, Elephant tusk
North America
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View all →Planting and care
It prefers light soils, rich in organic matter. Sow in a warm greenhouse at 21°C (69.8°F). Cover the seeds with 1cm of soil. Germination takes about 21 days. Transplant in June when the soil is warmed up.
Sowing period
Intended location
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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 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.