Achillea 'Diadeem'
"Sneezewort"
Orders placed before 1 September 2024
You can expect your order in September 2024
Orders placed 1 September - 15 October 2024
You can expect your order in October 2023
Orders placed 16 October - 15 December 2024
You can expect your order within 10 business days
UK orders over £50
Free shipping
UK orders under £50
£4.99
Northern Ireland orders under £50
£5.99
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Description
Achillea 'Diadeem' is the compact beauty your garden didn’t know it needed. This double-flowered version of Achillea ptarmica features delightful pompon-like white blooms that create a soft, fluffy texture in any garden. Growing to a manageable height, this variety is perfect for borders, rockeries, or even containers where space is at a premium. The pure white flowers, with their charming, rounded shape, create a lovely contrast against its finely textured green foliage, making Achillea 'Diadeem' an excellent choice for adding a touch of whimsy and elegance.
What makes Achillea ptarmica 'Diadeem' particularly special is its resilience and ease of care. Unlike its taller cousins, this compact variety thrives in well-drained soil and a sunny spot, offering an effortless burst of summer colour with minimal maintenance. Once established, Achillea 'Diadeem' continues to bloom profusely from late spring into summer, attracting pollinators and brightening up your garden with its cheerful, pompon-like flowers. Whether planted in the front of a border or used to soften the edges of a path, this achillea variety brings long-lasting beauty to your garden without taking over. Simple to grow and easy to love, Achillea 'Diadeem' is a must-have for any gardener looking for a compact, eye-catching perennial.
Our Achillea ptarmica 'Diadeem' plants are supplied as a root ball with healthy growth, ensuring a strong start. They are carefully shipped in our unique cardboard box, designed to keep them safe and in top condition. This ensures they arrive healthy and ready to thrive in their new home.
Key features
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Comes back every year
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Attractive to wildlife
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Loved by pollinators
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Low maintenance
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RHS Award (AGM)
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Drought tolerant
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Fully hardy
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Rodent resistant
Specs & details
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Botanical name
Achillea ptarmica 'Diadeem'
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Flower colour
White
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Plant size
9cm root ball
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Established height
30-50cm
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Established spread
30-50cm
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Plant spacing
9 plants per m2
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Leaf colour
Green
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Habit
Upright
Clump-forming -
Life cycle
Perennial
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Hardiness
Fully hardy
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Years to establish
2-3 years
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Sunlight
Partial shade
Dappled shade -
Position
Sheltered
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Suitable for
Large containers
Borders
Cottage gardens
Low maintenance gardens -
Soil acidity
Any
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Soil moisture
Damp
Free draining -
Soil type
Loam
Clay
Loam-based compost -
Growing skill
Easy to grow
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Scented
No
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Pollinator-friendly
Yes
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Mouse resistant
No
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Rabbit resistant
Yes
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Deer resistant
Yes
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Toxicity
No report
Plant calendar
Jan | Feb | Mar | Apr | May | June | July | Aug | Sep | Oct | Nov | Dec |
---|---|---|---|---|---|---|---|---|---|---|---|
- Planting
- Flowering
Useful information
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Soak your Achillea 'Diadeem' roots in water for 3-6 hours prior to planting.
Plant your "Sneezewort" bare roots into temporary pots with a multipurpose compost in spring and grow-on in a sheltered spot outdoors.
Choose a pot which comfortably fits the bare roots. Some have a noticeable crown which should be just below the soil surface with any top growth exposed.
Plant out into borders or permanent containers in late spring or early summer once in full growth. Choose a position in sun or shade depending on the variety.
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Orders placed before 1 September 2025
You can expect your order in September 2025Orders placed 1 September - 15 October 2025
You can expect your order in October 2025Orders placed 16 October - 15 December 2025
You can expect your order within 10 business days
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