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botanical name:
Astrantia 'Roma'
Astrantia 'Roma' © Deeproot Plant Base
common name:  Masterwort
synonyms:  Astrantia major 'Roma'
family:  Apiaceae
characteristics: perennial
height: 0.60m
width: 0.45m
growth rate: medium
growth habit: clump
leaf colour: green
flower colour: pink
main season: Summer
aspect: full sun, part shade
conditions: moist soil, clay soil
preferred soil pH: any
minimum temp: -35°C
USDA zone: 5 to 8
Good modern cultivar, freely producing relatively large, soft pink flowers with deep pink anthers. Deeply lobed mid-green leaves.

Reasonably fertile, moist, preferably humus-rich soil in sun or part shade. May self-seed, but resulting plants will be variable and unlikely to be true to their parents.
Cut back old flowers.

By division in spring.

other notes:
From Piet Oudolf.
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