

Eupatorium maculatum Atropurpureum Seeds
Eupatorium maculatum Atropurpureum Seeds
Eupatorium maculatum Atropurpureum
Spotted Joe-Pye Weed, Joe-Pye Weed, Spotted Trumpetweed
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View all →This plant carries a 6 months recovery warranty
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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.
Seed-only orders are dispatched by sealed envelope. The delivery charge for seed-only orders is €3.90.
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Description
Eupatorium maculatum 'Atropurpureum' or Spotted Joe-Pye Weed is a tall and robust perennial. It forms large, mossy lilac flowerheads on wine-coloured stems that tower over contrasting dark green foliage.
Eupatorium maculatum 'Atropurpureum' is a herbaceous perennial belonging to the Asteraceae family, native to North America. It has an upright, bushy habit and generally grow to 2 m in height for a spread of 1 m. Its beautiful, deep dark green deciduous foliage is made up of lanceolate leaves. Terminal flower heads are arranged in large, 20 cm corymbs on sturdy wine-coloured stems, like fuzzy lilac pompoms. Although fairly late to appear, they flower throughout the summer until late October. Plants remain ornamental until winter thanks to seed heads topped with small, fluffy tufts which are gently dispersed by the wind.
Eupatorium maculatum Atropurpureum is an easy-going, undemanding plant. It is resistant to insects and diseases and attracts lots of pollinators, especially butterflies. Cold-hardy down to -15°C, it prefers damp or even marshy growing conditions and is ideal for growing at the edge of a pond. It adapts to all types of soil but prefers moist, rich and well-drained soils. Spotted Joe-Pye Weed looks great in wild, naturalistic gardens alongside double-blooming Eupatorium cannabinum Plenum. Cut back the stems in late autumn to maintain a compact habit.
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Flowering
Foliage
Plant habit
Botanical data
Eupatorium
maculatum
Atropurpureum
Asteraceae
Spotted Joe-Pye Weed, Joe-Pye Weed, Spotted Trumpetweed
North America
Other Thompson and Morgan seeds
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Sow from January to late June in good quality sowing mix, barely covering the seeds as they need enough light to germinate. Make sure that the soil is moist but not waterlogged, at a temperature of 18 to 24 °C. In their natural habitat, Eupatorium maculatum seeds need a period of cold to germinate. To help germination, leave your seeds in the lower part of your refrigerator for a few days before sowing. Germination generally takes 21 to 40 days.
Once the young plants are strong enough to be handled, transplant them into well-loosened soil, leaving about one metre between each plant.
Sowing period
Intended location
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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).

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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.