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Arisaema thunbergii subsp. urashima (Urashima-so)
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1 hour care
per year
per year
0.5m
Max height
Max height
0.5m
Max spread
Max spread
2-5 years
To maturity
To maturity
Low
Toxicity
Toxicity
Plant details
Botanical name
Arisaema thunbergii subsp. urashima
Other names
Urashima-so, Arisaema urashima, Arisaema thunbergii var. urashima, Cobra lily
Genus
Arisaema Arisaema
Species
A. thunbergii subsp. urashima - A. thunbergii subsp. urashima is a tuberous perennial bearing one large, horizontal leaf divided into numerous, narrowly lance-shaped, dark green leaflets and, emerging from the ground in spring at the base of the leaf stem, a single, maroon-spotted, creamy-white flower with a pitcher-like, maroon-hooded spathe bearing an inner, cylindrical, maroon spadix with a long, whip-like tail emerging over the lip of the spathe.
Arisaema thunbergii subsp. urashima is: Deciduous
Habit
Erect
Toxicity
All parts of the plant are poisonous if ingested. The sap may irritate skin and eyes.
Flower
Spotted, Maroon, Cream in Spring
Foliage
Dark-green in Spring; Dark-green in Summer; Dark-green in Autumn
How to care
Watch out for
Specific pests
Slugs , Snails , Vine weevil Slugs , Snails , Vine weevil
Diseases
Generally disease-free.
General care
Propagation
May take 3-5 years to flower if grown from seed.
Propagation methods
Seed, Offsets
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Where to grow
Arisaema thunbergii subsp. urashima (Urashima-so) will reach a height of 0.5m and a spread of 0.5m after 2-5 years.
Suggested uses
Beds and borders, Cottage/Informal, Flower Arranging, Woodland, Low Maintenance, Underplanting
Cultivation
Plant tuber 20cm deep in winter or spring in moist soil in a cool, partially-shaded site. Tolerates sun if soil remains moist. Tends to go dormant in summer. Mulch in winter & protect from frost in spring. Do not allow dormant tubers to dry out but avoid excessive winter wet.
Soil type
Sandy, Loamy
Soil drainage
Moist but well-drained
Soil pH
Acid, Neutral
Light
Partial Shade
Aspect
North, East, West
Exposure
Sheltered
UK hardiness Note: We are working to update our ratings. Thanks for your patience.
Hardy (H4)
Companion plants
We do not currently have companion plants added for this plant.
Botanical name
Arisaema thunbergii subsp. urashima
Other names
Urashima-so, Arisaema urashima, Arisaema thunbergii var. urashima, Cobra lily
Genus
Arisaema Arisaema
Species
A. thunbergii subsp. urashima - A. thunbergii subsp. urashima is a tuberous perennial bearing one large, horizontal leaf divided into numerous, narrowly lance-shaped, dark green leaflets and, emerging from the ground in spring at the base of the leaf stem, a single, maroon-spotted, creamy-white flower with a pitcher-like, maroon-hooded spathe bearing an inner, cylindrical, maroon spadix with a long, whip-like tail emerging over the lip of the spathe.
Foliage
Deciduous
Habit
Erect
Toxicity
All parts of the plant are poisonous if ingested. The sap may irritate skin and eyes.
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Colour
Flower
Spotted, Maroon, Cream in Spring
Foliage
Dark-green in Spring; Dark-green in Summer; Dark-green in Autumn
How to care
Watch out for
Specific pests
Slugs , Snails , Vine weevil
Diseases
Generally disease-free.
General care
Propagation
May take 3-5 years to flower if grown from seed.
Propagation methods
Seed, Offsets
Monthly care advice
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Where to grow
Arisaema thunbergii subsp. urashima (Urashima-so) will reach a height of 0.5m and a spread of 0.5m after 2-5 years.
Suggested uses
Beds and borders, Cottage/Informal, Flower Arranging, Woodland, Low Maintenance, Underplanting
Cultivation
Plant tuber 20cm deep in winter or spring in moist soil in a cool, partially-shaded site. Tolerates sun if soil remains moist. Tends to go dormant in summer. Mulch in winter & protect from frost in spring. Do not allow dormant tubers to dry out but avoid excessive winter wet.
Soil type
Sandy, Loamy
Soil drainage
Moist but well-drained
Soil pH
Acid, Neutral
Light
Partial Shade
Aspect
North, East, West
Exposure
Sheltered
UK hardiness Note: We are working to update our ratings. Thanks for your patience.
Hardy (H4)
USDA zones
Zone 9, Zone 8, Zone 7, Zone 6, Zone 5
In order to add a note on this plant, please add this plant to your plant lists.
| This plant likes... | Garden match | |
| Soil types: | Sandy, Loamy | Tell us... |
| Soil drainage: | Moist but well-drained | Tell us... |
| Soil pH: | Acid, Neutral | Tell us... |
| Light: | Partial Shade | Tell us... |
| Aspect: | North, East, West | Tell us... |
| Exposure: | Sheltered | Tell us... |
| Hardiness: | Hardy (H4) | Tell us... |
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