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Aconitum 'Blue Opal' (Monk's hood 'Blue Opal')
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1 hour care
per year
per year
1.5m
Max height
Max height
0.5m
Max spread
Max spread
2-5 years
To maturity
To maturity
Low
Toxicity
Toxicity
Plant details
Botanical name
Aconitum 'Blue Opal'
Other names
Monk's hood 'Blue Opal', Monkshood 'Blue Opal'
Genus
Aconitum Aconitum
Variety or Cultivar
'Blue Opal' _ 'Blue Opal' is an erect, clump-forming, herbaceous perennial with ovate, deeply lobed, leathery, dark green leaves and strong, purple-brown stems bearing dense, branched panicles of hooded, light violet-blue flowers in late summer and early autumn.
Aconitum 'Blue Opal' is: Deciduous
Habit
Clump-forming, Upright
Toxicity
All parts highly toxic if eaten; also harmful via the skin. Wear gloves when handling.
Flower
Violet, Blue in Summer; Violet, Blue in Autumn
Foliage
Dark-green in Spring; Dark-green in Summer; Dark-green in Autumn
How to care
Watch out for
Specific pests
Aphids Aphids
Powdery mildew , Verticillium wilt Powdery mildew , Verticillium wilt
General care
Pruning
Cut back in late autumn after flowering.
Propagation
Propagate by division between autumn and spring. May be slow to re-establish.
Propagation methods
Division
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Where to grow
Aconitum 'Blue Opal' (Monk's hood 'Blue Opal') will reach a height of 1.5m and a spread of 0.5m after 2-5 years.
Suggested uses
Beds and borders, City, Coastal, Cottage/Informal, Flower Arranging
Cultivation
Grow in cool, moist, fertile soil in partial shade. Will tolerate most soils and full sun if soil is improved with well-rotted organic matter and mulched. May require staking.
Soil type
Clay, Loamy
Soil drainage
Moist but well-drained, Moisture-retentive
Soil pH
Acid, Alkaline, Neutral
Light
Partial Shade, Full Sun
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
Aconitum 'Blue Opal'
Other names
Monk's hood 'Blue Opal', Monkshood 'Blue Opal'
Genus
Aconitum Aconitum
Variety or Cultivar
'Blue Opal' _ 'Blue Opal' is an erect, clump-forming, herbaceous perennial with ovate, deeply lobed, leathery, dark green leaves and strong, purple-brown stems bearing dense, branched panicles of hooded, light violet-blue flowers in late summer and early autumn.
Foliage
Deciduous
Habit
Clump-forming, Upright
Toxicity
All parts highly toxic if eaten; also harmful via the skin. Wear gloves when handling.
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Colour
Flower
Violet, Blue in Summer; Violet, Blue in Autumn
Foliage
Dark-green in Spring; Dark-green in Summer; Dark-green in Autumn
How to care
Watch out for
Specific pests
Specific diseases
Powdery mildew , Verticillium wilt
General care
Pruning
Cut back in late autumn after flowering.
Propagation
Propagate by division between autumn and spring. May be slow to re-establish.
Propagation methods
Division
Monthly care advice
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Where to grow
Aconitum 'Blue Opal' (Monk's hood 'Blue Opal') will reach a height of 1.5m and a spread of 0.5m after 2-5 years.
Suggested uses
Beds and borders, City, Coastal, Cottage/Informal, Flower Arranging
Cultivation
Grow in cool, moist, fertile soil in partial shade. Will tolerate most soils and full sun if soil is improved with well-rotted organic matter and mulched. May require staking.
Soil type
Clay, Loamy
Soil drainage
Moist but well-drained, Moisture-retentive
Soil pH
Acid, Alkaline, Neutral
Light
Partial Shade, Full Sun
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 7, Zone 6, Zone 5, Zone 4, Zone 3
In order to add a note on this plant, please add this plant to your plant lists.
| This plant likes... | Garden match | |
| Soil types: | Clay, Loamy | Tell us... |
| Soil drainage: | Moist but well-drained, Moisture-retentive | Tell us... |
| Soil pH: | Acid, Alkaline, Neutral | Tell us... |
| Light: | Partial Shade, Full Sun | Tell us... |
| Aspect: | North, East, West | Tell us... |
| Exposure: | Sheltered | Tell us... |
| Hardiness: | Hardy (H4) | Tell us... |
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