Arisaema speciosum
Close-up of a arum speciosum plant with a blurred natural background
Close-up of a arum speciosum plant with a blurred natural background
Arisaema speciosum

Arisaema speciosum

"Showy cobra lily"

Arisaema speciosum

1 bulb — £7.90

Spring planting season is currently closed 
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Delivery schedule

Orders placed until 29 February 2027
You can expect your order in February/March 2027

Orders placed 1 March - 15 April 2027
You can expect your order in March/April 2027

Orders placed 16 April - 15 May 2027
You can expect your order within 10 business days

Available for (pre)ordering again in December
Free delivery on UK orders over £50
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on orders under £50

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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

  • Good for cutting

  • Perfect for pots

  • Great for shade

  • Low maintenance

  • May need winter cover

  • Needs winter protection

  • Rodent resistant

Specs & details

  • Botanical name

    Arisaema speciosum
    syn. Arum speciosum

  • Flower colour

    Purple, brown

  • Bulb size

    1

  • Established height

    30-50cm

  • Established spread

    20-30cm

  • Plant spacing

    9 bulbs per m2

  • Leaf colour

    Green

  • Habit

    Upright
    Clump-forming

  • Life cycle

    Short-lived perennial

  • Hardiness

    Tender

  • Years to establish

    1st year

  • Sunlight

    Partial shade
    Dappled shade
    Full shade

  • Position

    Sheltered

  • Suitable for

    Pots
    Exotic gardens
    Cottage gardens
    Low maintenance gardens
    Cut flower gardens

  • Soil acidity

    Any

  • Soil moisture

    Free draining

  • Soil type

    Loam
    Multipurpose compost

  • Growing skill

    Easy to grow

  • Scented

    No

  • Pollinator-friendly

    No

  • Mouse resistant

    Yes

  • Rabbit resistant

    Yes

  • Deer resistant

    Yes

  • Toxicity

    Harmful if eaten
    Skin/eyes irritant

Plant calendar

JanFebMarAprMayJuneJulyAugSepOctNovDec
  • Planting
  • Flowering

Useful information

  • Orders placed until 29 February 2027
    You can expect your order in February/March 2027

    Orders placed 1 March - 15 April 2027
    You can expect your order in March/April 2027

    Orders placed 16 April - 15 May 2027
    You can expect your order within 10 business days

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