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Arisaema tortuosum
Arisaema tortuosum
Arisaema tortuosum
Arisaema tortuosum
Quality bulb
Marc, 04/04/2022
Order in the next for dispatch today!
Dispatch by letter from €3.90.
Delivery charge from €5.90 Oversize package delivery charge from €6.90.
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This plant carries a 12 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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The Arisaema tortuosum is a strange tuberous perennial native to China. In early summer, a flower head emerges between two large arched leaves, resembling a "snake's head" in apple green colour, similar to our woodland arums but taller and more spectacular. As an understory plant, it thrives in cool environments and humus-rich, well-drained soils. Despite its exotic appearance, it is easy to cultivate and adapt well to moderately warm climates.
Arisaema tortuosum belongs to the Araceae family, just like Zantedeschia (white arums) and the native cuckoo pint of our forests. It is found in southwest China and neighbouring countries (Bhutan, Nepal), in woodlands, on rocky slopes, and along stream banks at altitudes between 1300 and 2900 metres (4265 and 9514 feet). It is a perennial with a flat tuberous stump, which may resemble cyclamen tubers but with a less smooth surface. In late spring, this tuber produces two bright green leaves, called "pedate" leaves, shaped like a curved bicycle handlebar with 7-9 lobes. They are carried on long rigid petioles, nested within each other, forming an erect stem-like structure. Under suitable conditions and depending on the plant's origin, the entire structure can reach a height of 60 cm (24in) to 1.20 m (4ft). In early summer, shortly after, a curious cornet-like flowering structure appears between the leaves. Like most plants in this botanical family, it is a flower head composed of a green apple-coloured 10 cm (4in) spathe surrounding a central stalk (spadix) that contains tiny flowers. In Arisaema tortuosum, this purple or green spadix curves upwards and can exceed 20 to 30 cm (8 to 12in) in length (which also gives it its Latin name, meaning "twisted, tortuous"). This cornet, like all Arisaema plants, can also resemble a snake's head with a protruding tongue, hence their common name, "cobra plant". Sometimes, in the presence of multiple plants, small berries form and can disperse the plant through self-sowing. As soon as fruiting is complete, the entire plant enters a dormant phase and completely disappears until the following spring.
Arisaema tortuosum, despite its exotic appearance, is perfectly hardy (down to at least -15°C (5°F)) and easy to grow, so it poses no problem even in cool climates. However, it does not thrive in hot and dry environments, which restricts its size and causes it to enter dormancy quickly. Provide a shady or semi-shady location in good, rich, humus-rich garden soil that is not too heavy. Adding dead leaves to the plant each year can be beneficial as it provides a layer of mulch. It's best to avoid planting in windy locations as it can cause the stem to bend or break. However, under normal conditions, staking is not required, mainly when other low-growing perennials or bushes surround the plant. Since the leaves emerge late, mark the plant's location to avoid accidentally digging it up at the beginning of the season.
As the cobra plant disappears in summer, you can place it under deciduous trees, which will only start drawing water from the soil once it has gone dormant. Combine it with other exotic-looking perennials to create a stunning, contrasting, yet perfectly hardy border: Kirengeshoma palmata, Boehmeria biloba, Corydalis 'Porcelain Blue', Hosta 'Halcyon', or even Decaisnea fargesii among the bushes, will provide excellent company to this underrated perennial.
Arisaema tortuosum in pictures
Flowering
Foliage
Plant habit
Botanical data
Arisaema plants prefer cool to moist climates and partial shade. They thrive in fresh, humus-rich soil and can tolerate well-drained clay soils during winter. While they appreciate humidity in spring and summer, they are susceptible to it in winter. To protect them from the cold, it's recommended to leave dead leaves (20cm or 8in) on the base, which also provides the humus they need.
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.