Achillea ptarmica Diadem
Achillea ptarmica Diadem
Achillea ptarmica Diadem
Achillea ptarmica Diadem 'Versdidem' PP33,484
Sneezewort, Bastard Pellitory, European Pellitory, Fair-maid-of-France, Goose Tongue, Sneezeweed, Wild Pellitory, White Tansy
It didn't shoot.
Annick, 23/09/2024
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This plant carries a 12 months recovery warranty
More information
We guarantee the quality of our plants for a full growing cycle, and will replace at our expense any plant that fails to recover under normal climatic and planting conditions.
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Description
The Achillea ptarmica 'Diadem' is a highly floriferous and neatly shaped variety of double-flowered sneezewort. Adorned with white pompom-like flowers, this perennial forms a round and dense tuft that appears covered in snowflakes. Unlike many other achilleas, it prefers moderately moist soils. Very hardy and charming, it thrives in sun or partial shade, at the front of flower beds, in borders, on balconies and terraces.
The Achillea ptarmica 'Diadem' 'Versdidem' is a deciduous perennial herbaceous plant belonging to the Asteraceae family with a slightly creeping rhizomatous root system. Its above-ground growth emerges in spring, dries up, and disappears in autumn. Its ancestors, sometimes called sneezewort, marsh yarrow, sneezeweed, or stonebreaker, is a species widespread in northern Europe and Asia. Its natural habitat consists of meadows and wet areas. This hybrid variety 'Diadem' has a bushy, compact and dense habit, forming a tuft about 30-35 cm (12-14in) tall and wide. The stems bear slender, lanceolate, dark green leaves. Flowering occurs from July to September if faded flowers are regularly removed. At the tips of the stems, numerous double pure white flowers, about 1 cm (1in) in diameter, with a barely touched yellow centre, appear. This flowering is popular with bees and butterflies.
The Achillea ptarmica 'Diadem' is highly cold-tolerant (-20°C) and makes a lovely companion for other border perennials and annuals that bloom on terraces. For example, pair it with the false wallflower Zwerg Jaune, the perennial wallflower Poem Lavender, or the fragrant dwarf alyssum in the Magic Circles mix. Aphids often attack sneezewort to the point that it is known in organic gardening to prevent or avoid other plants from being invaded. It is ideal in herb gardens, flower beds, meadows, and cut flowers. Its association with scabious and phlox is also very successful.
Achillea ptarmica Diadem in pictures
Flowering
Foliage
Plant habit
Botanical data
Achillea
ptarmica
Diadem 'Versdidem' PP33,484
Asteraceae
Sneezewort, Bastard Pellitory, European Pellitory, Fair-maid-of-France, Goose Tongue, Sneezeweed, Wild Pellitory, White Tansy
Cultivar or hybrid
Planting and care
When planting Achillea ptarmica Diadem, choose a spot that gets full sun or partial shade. This plant prefers soil that's neutral to acidic, humus-rich, well-drained, and not too chalky. You can plant it in the ground or in pots. Use soil enriched with compost that retains some moisture in the summer. Trim the faded flowers regularly to encourage new blooms.
Planting period
Intended location
Care
Planting & care advice
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Hardiness is the lowest winter temperature a plant can endure without suffering serious damage or even dying. However, hardiness is affected by location (a sheltered area, such as a patio), protection (winter cover) and soil type (hardiness is improved by well-drained soil).
The flowering period indicated on our website applies to countries and regions located in USDA zone 8 (France, the United Kingdom, Ireland, the Netherlands, etc.)
It will vary according to where you live:- In zones 9 to 10 (Italy, Spain, Greece, etc.), flowering will occur about 2 to 4 weeks earlier.
- In zones 6 to 7 (Germany, Poland, Slovenia, and lower mountainous regions), flowering will be delayed by 2 to 3 weeks.
- In zone 5 (Central Europe, Scandinavia), blooming will be delayed by 3 to 5 weeks.
In temperate climates, pruning of spring-flowering shrubs (forsythia, spireas, etc.) should be done just after flowering.
Pruning of summer-flowering shrubs (Indian Lilac, Perovskia, etc.) can be done in winter or spring.
In cold regions as well as with frost-sensitive plants, avoid pruning too early when severe frosts may still occur.
The planting period indicated on our website applies to countries and regions located in USDA zone 8 (France, United Kingdom, Ireland, Netherlands).
It will vary according to where you live:
- In Mediterranean zones (Marseille, Madrid, Milan, etc.), autumn and winter are the best planting periods.
- In continental zones (Strasbourg, Munich, Vienna, etc.), delay planting by 2 to 3 weeks in spring and bring it forward by 2 to 4 weeks in autumn.
- In mountainous regions (the Alps, Pyrenees, Carpathians, etc.), it is best to plant in late spring (May-June) or late summer (August-September).
The harvesting period indicated on our website applies to countries and regions in USDA zone 8 (France, England, Ireland, the Netherlands).
In colder areas (Scandinavia, Poland, Austria...) fruit and vegetable harvests are likely to be delayed by 3-4 weeks.
In warmer areas (Italy, Spain, Greece, etc.), harvesting will probably take place earlier, depending on weather conditions.
The sowing periods indicated on our website apply to countries and regions within USDA Zone 8 (France, UK, Ireland, Netherlands).
In colder areas (Scandinavia, Poland, Austria...), delay any outdoor sowing by 3-4 weeks, or sow under glass.
In warmer climes (Italy, Spain, Greece, etc.), bring outdoor sowing forward by a few weeks.