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Astrantia maxima (Largest masterwort)
2 hours care
per year
per year
0.6m
Max height
Max height
0.6m
Max spread
Max spread
2-5 years
To maturity
To maturity
Plant details
Botanical name
Astrantia maxima
Other names
Largest masterwort, Astrantia helleborifolia
Genus
Astrantia Astrantia
Species
A. maxima - A. maxima is a clump-forming, deciduous perennial with deeply-divided, mid-green leaves and branching stems bearing umbels of pale pinks flowers surrounded by pink bracts in summer.
Astrantia maxima is: Deciduous
Habit
Clump-forming, Erect flower stem
Awards
RHS AGM (Award of Garden Merit)
Flower
Pale-pink in Summer
Foliage
Mid-green in Spring; Mid-green in Summer; Mid-green in Autumn
How to care
Watch out for
Specific pests
Leaf-mining sawflies Leaf-mining sawflies
Powdery mildew Powdery mildew
General care
Pruning
Cut back flower stems when they turn brown to encourage a second flush of flowers. Deadhead before seed is ripe to prevent self-seeding.
Propagation
Lift and divide in early spring. May take time to establish after division as the roots do not like to be disturbed.
Propagation methods
Division
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Where to grow
Astrantia maxima (Largest masterwort) will reach a height of 0.6m and a spread of 0.6m after 2-5 years.
Suggested uses
Beds and borders, Coastal, Cottage/Informal, Drying, Flower Arranging
Cultivation
Plant in moist, fertile, humus-rich soil full sun or partial shade. Tolerates dry conditions and shade.
Soil type
Chalky, Clay, Loamy, Sandy (will tolerate most soil types)
Soil drainage
Moist but well-drained, Moisture-retentive
Soil pH
Acid, Alkaline, Neutral
Light
Partial Shade, Full Shade, Full Sun
Aspect
North, South, 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
Astrantia maxima
Other names
Largest masterwort, Astrantia helleborifolia
Genus
Astrantia Astrantia
Species
A. maxima - A. maxima is a clump-forming, deciduous perennial with deeply-divided, mid-green leaves and branching stems bearing umbels of pale pinks flowers surrounded by pink bracts in summer.
Native to
Caucasus, Iran, Turkey
Foliage
Deciduous
Habit
Clump-forming, Erect flower stem
Awards
RHS AGM (Award of Garden Merit)
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Colour
Flower
Pale-pink in Summer
Foliage
Mid-green in Spring; Mid-green in Summer; Mid-green in Autumn
How to care
Watch out for
Specific pests
Specific diseases
General care
Pruning
Cut back flower stems when they turn brown to encourage a second flush of flowers. Deadhead before seed is ripe to prevent self-seeding.
Propagation
Lift and divide in early spring. May take time to establish after division as the roots do not like to be disturbed.
Propagation methods
Division
Monthly care advice
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Where to grow
Astrantia maxima (Largest masterwort) will reach a height of 0.6m and a spread of 0.6m after 2-5 years.
Suggested uses
Beds and borders, Coastal, Cottage/Informal, Drying, Flower Arranging
Cultivation
Plant in moist, fertile, humus-rich soil full sun or partial shade. Tolerates dry conditions and shade.
Soil type
Chalky, Clay, Loamy, Sandy (will tolerate most soil types)
Soil drainage
Moist but well-drained, Moisture-retentive
Soil pH
Acid, Alkaline, Neutral
Light
Partial Shade, Full Shade, Full Sun
Aspect
North, South, 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, Zone 4
In order to add a note on this plant, please add this plant to your plant lists.
| This plant likes... | Garden match | |
| Soil types: | Chalky, Clay, Loamy, Sandy (will tolerate most soil types) | Tell us... |
| Soil drainage: | Moist but well-drained, Moisture-retentive | Tell us... |
| Soil pH: | Acid, Alkaline, Neutral | Tell us... |
| Light: | Partial Shade, Full Shade, Full Sun | Tell us... |
| Aspect: | North, South, East, West | Tell us... |
| Exposure: | Sheltered | Tell us... |
| Hardiness: | Hardy (H4) | Tell us... |
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