Arisaema speciosum
"Showy cobra lily"
Orders placed before 1 March 2026
You can expect your order in February/March 2026
Orders placed 1 March - 15 April 2026
You can expect your order in March/April 2026
Orders placed 16 April - 26 May 2026
You can expect your order within 10 business days
UK orders over £50
Free shipping
UK orders under £50
£4.99
Northern Ireland orders under £50
£5.99
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Description
Arisaema speciosum is one of those plants that seems to have slithered straight out of a Victorian explorer’s sketchbook—exotic, mysterious and just a touch theatrical. Commonly known as the showy cobra lily, it rises from the soil with an elegant poise, displaying a solitary, three-part leaf that frames its true spectacle: a striking purple spathe hooded over a pale, white-tipped spadix, like a cobra about to strike. The markings are extraordinary—striped and mottled in tones of burgundy and cream—making Arisaema speciosum a captivating centrepiece for shaded borders, woodland gardens or any spot that deserves a bit of drama.
Despite its exotic appearance, Arisaema speciosum is surprisingly accommodating. It’s content in moist, humus-rich soil with dappled shade, where it adds a tropical air without demanding tropical conditions. Emerging in late spring and flowering through summer, Arisaema speciosum brings structure and intrigue long before other perennials wake up to the idea. The tuber quietly retreats underground in winter, resting before returning with equal flair the following year. Partner it with ferns or hostas for a striking contrast in texture and tone—or let it stand alone, where its sinuous form can be properly admired. There’s nothing ordinary about Arisaema speciosum—it’s a botanical conversation starter that manages to be both refined and a little bit wild.
Arisaema speciosum is called showy cobra lily because its hooded flower resembles a rearing cobra poised to strike—dramatic and exotic in equal measure.
Key features
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Good for cutting
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Perfect for pots
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Great for shade
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Low maintenance
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May need winter cover
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Needs winter protection
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Rodent resistant
Specs & details
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Botanical name
Arisaema speciosum
syn. Arum speciosum -
Flower colour
Purple, brown
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Bulb size
1
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Established height
30-50cm
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Established spread
20-30cm
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Plant spacing
9 bulbs per m2
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Leaf colour
Green
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Habit
Upright
Clump-forming -
Life cycle
Short-lived perennial
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Hardiness
Tender
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Years to establish
1st year
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Sunlight
Partial shade
Dappled shade
Full shade -
Position
Sheltered
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Suitable for
Pots
Exotic gardens
Cottage gardens
Low maintenance gardens
Cut flower gardens -
Soil acidity
Any
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Soil moisture
Free draining
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Soil type
Loam
Multipurpose compost -
Growing skill
Easy to grow
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Scented
No
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Pollinator-friendly
No
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Mouse resistant
Yes
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Rabbit resistant
Yes
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Deer resistant
Yes
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Toxicity
Harmful if eaten
Skin/eyes irritant
Plant calendar
| Jan | Feb | Mar | Apr | May | June | July | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
- Planting
- Flowering
Useful information
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Orders placed before 1 March 2026
You can expect your order in Feb/March 2026Orders placed 1 March - 15 April 2026
You can expect your order in April 2026Orders placed 16 April - 15 May 2026
You can expect your order within 10 business days
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