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Astrantia 'Star of Treasure' (Masterwort 'Star of Treasure')
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2 hours care
per year
per year
0.6m
Max height
Max height
0.4m
Max spread
Max spread
2-5 years
To maturity
To maturity
Plant details
Botanical name
Astrantia 'Star of Treasure'
Other names
Masterwort 'Star of Treasure'
Genus
Astrantia Astrantia
Variety or Cultivar
'Star of Treasure' _ 'Star of Treasure' is an upright, clump-forming, herbaceous perennial with deeply divided, palmate, toothed, veined, dark green leaves and, from early summer to early autumn, erect, branching, black stems bearing umbels of tiny, white-tipped, reddish-pink flowers surrounded by prominent, reddish-pink bracts.
Astrantia 'Star of Treasure' is: Deciduous
Habit
Clump-forming, Erect flower stem, Upright
Flower
Reddish pink in Summer; Reddish pink in Autumn
Foliage
Dark-green in Spring; Dark-green in Summer; Dark-green in Autumn
How to care
Watch out for
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. Lift and divide in early spring. May take time to establish after division as the roots do not like to be disturbed.
Propagation
May self-seed. Seedlings will not come true to type.
Propagation methods
Division
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Where to grow
Astrantia 'Star of Treasure' (Masterwort 'Star of Treasure') will reach a height of 0.6m and a spread of 0.4m after 2-5 years.
Suggested uses
Beds and borders, Coastal, Cottage/Informal, Drying, Flower Arranging
Cultivation
Plant in moist, fertile, humus-rich soil in sun for best foliage colour. Water newly-established plants well in dry conditions. Performs best in heavy, clay soil.
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 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 'Star of Treasure'
Other names
Masterwort 'Star of Treasure'
Genus
Astrantia Astrantia
Variety or Cultivar
'Star of Treasure' _ 'Star of Treasure' is an upright, clump-forming, herbaceous perennial with deeply divided, palmate, toothed, veined, dark green leaves and, from early summer to early autumn, erect, branching, black stems bearing umbels of tiny, white-tipped, reddish-pink flowers surrounded by prominent, reddish-pink bracts.
Foliage
Deciduous
Habit
Clump-forming, Erect flower stem, Upright
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Colour
Flower
Reddish pink in Summer; Reddish pink in Autumn
Foliage
Dark-green in Spring; Dark-green in Summer; Dark-green in Autumn
How to care
Watch out for
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. Lift and divide in early spring. May take time to establish after division as the roots do not like to be disturbed.
Propagation
May self-seed. Seedlings will not come true to type.
Propagation methods
Division
Monthly care advice
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Where to grow
Astrantia 'Star of Treasure' (Masterwort 'Star of Treasure') will reach a height of 0.6m and a spread of 0.4m after 2-5 years.
Suggested uses
Beds and borders, Coastal, Cottage/Informal, Drying, Flower Arranging
Cultivation
Plant in moist, fertile, humus-rich soil in sun for best foliage colour. Water newly-established plants well in dry conditions. Performs best in heavy, clay soil.
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 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 Sun | Tell us... |
| Aspect: | North, South, East, West | Tell us... |
| Exposure: | Sheltered | Tell us... |
| Hardiness: | Hardy (H4) | Tell us... |
ARTICLES WITH THIS PLANT
By garden designer Sarah Eberle.The 2017 Hillier Chelsea Flower Show garden has been inspired by one simple word: Spring. read more
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