
Elegant sprays of pure white, double and semi-double pom-pom flowers are borne over a long period from June to August above finely toothed, dark green leaves.
A favourite of Edwardian garden designer Gertrude Jeykll, 'The Pearl' is excellent for the middle of a sunny, well-drained border, and looks great with a backdrop of evergreens.
Long flowering and drought-tolerant, this Achillea is also vigorous, and will spread to form a natural mound.
A favourite of Edwardian garden designer Gertrude Jeykll, 'The Pearl' is excellent for the middle of a sunny, well-drained border, and looks great with a backdrop of evergreens.
Long flowering and drought-tolerant, this Achillea is also vigorous, and will spread to form a natural mound.
How to care for Achillea ptarmica (The Pearl Group) The Pearl (clonal):
Achillea prefer well-drained soil and can suffer during very wet winters. To protect plants that are susceptible to rot in wet winter conditions, ensure they are planted in well-draining soil and consider adding grit or sand to the surrounding planting area to improve drainage. Raise beds or plant in containers if necessary, and avoid spots where water collects. If wet conditions are unavoidable, consider using a cloche or cold frame to shield the plants from excessive moisture.
In exposed positions, stake using bamboo canes or brushwood before the flowers appear.
Cut down to the ground in late winter, but resist the urge to do this earlier, as the seed heads offer a food source for birds and are attractive in low winter light.
Lift and divide large clumps in late autumn or early spring.
In exposed positions, stake using bamboo canes or brushwood before the flowers appear.
Cut down to the ground in late winter, but resist the urge to do this earlier, as the seed heads offer a food source for birds and are attractive in low winter light.
Lift and divide large clumps in late autumn or early spring.
Flowering period:
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
Eventual height:
1m
Eventual spread:
1m
Position:
Full sun
Rate of growth:
Fast-growing
Soil:
Moderately fertile, moist, well-drained soil
Hardiness:
Fully hardy
-
This perennial dies back to below ground level each year in autumn, then fresh new growth appears again in spring.
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