Organic Artichoke Imperial Star - Cynara scolymus
Organic Artichoke Imperial Star - Cynara scolymus
Cynara scolymus Imperial Star
Globe Artichoke
Roots in a tiny root ball (or even without one) and the young plants just as small. Out of 4 young plants, only one survived.
RHEA, 12/10/2025
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This plant carries a 6 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.
Description
The Imperial Star artichoke is an early globe-type variety with vigorous growth. Each plant forms a beautiful clump reaching about 1.50m (5ft) in height and 1m (3ft) in width and produces round, green heads measuring approximately 12cm (5in) in diameter, with a sweet and tender flavour of excellent quality. Plants produce 3 to 4 artichokes in the first year and 6 to 8 in subsequent years. Plant the young plants in spring, or autumn if your winters are mild, and harvest from May to August for about 4 years. The plug plants are planted from April to June after the last frost, when the plants have several leaves.
Certified organic plants.
The artichoke, scientifically known as Cynara scolymus, has large, deeply cut, silvery-grey leaves. At the end of the stems green or purple heads form, which can be consumed raw or cooked depending on the variety. If you let them bloom, you will get very decorative blue-violet flowers. Thus, the artichoke can be grown both in the vegetable garden and in the garden as an ornamental plant. By protecting the base during winter, you can harvest artichokes for several years. In cooking it is the base of the bracts that is consumed, as well as the flower receptacle, often called the heart of the artichoke. Some varieties can be eaten raw when the heads are small, but most artichokes require cooking, usually by steaming.
Harvesting : From May to August. The heads are harvested before flowering when they are perfectly formed, with the lower bracts starting to open. Cut cleanly with a knife or secateurs about 10 cm (4in) from the stem.
Storage : Artichokes should be consumed quickly after harvest. You can also can them or freeze them.
Gardener's tip : Since artichokes are a nutrient-demanding vegetable, they are ideally planted after a crop of peas, beans, or broad beans. These belong to the Fabaceae family and enrich the soil with nitrogen. Also, since artichoke growth is relatively slow, you can plant short-cycle plants like lettuces nearby.
Harvest
Plant habit
Foliage
Planting and care
The artichoke thrives in deep, humus-rich, moist, and well-drained soil. It should be planted in a sunny location if possible. A significant amount of well-rotted compost should be added the previous autumn, by scratching it into the ground to a depth of 5cm (2in) after working the soil. Planting takes place in spring, in March-April, or in autumn, in September-October, for regions with mild winters.
Dig a hole (3 times the volume of the root ball), insert the root ball and cover with soil. Firmly press down and water to keep the soil moist. Space the plants 1m (3ft) apart in all directions. Water regularly at the base, but moderately to avoid root rot.
Before the frost, cut the stems that have produced artichokes at ground level, then cut the main leaves in half. Add well-rotted compost every year in autumn.
Hardy down to -5°C (23°F), the artichoke needs to be protected before the first frost. Mound soil around the base, covering it to a height of 20 to 30 cm (8 to 12in), then cover with a layer of straw or dead leaves. Remove the mulch in February and remove the mound of soil in March.
The harvest decreases after 3 to 4 years, so it is preferable to replant new artichoke plants.
Cultivation
Care
Intended location
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).
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 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.
The planting period indicated on our website applies to regions in USDA Zone 9a (East Coast and Midlands: Dublin, Wexford, Waterford, Kilkenny, Portlaoise). It will vary depending on where you live:
- On the west coast and in the north-west (Galway, Limerick, Sligo, Donegal, Westport), delay planting by 1 to 2 weeks in spring and bring it forward by 1 to 2 weeks in autumn compared to the dates given, preferably choosing periods without strong winds.
- In the inland hills and plateaus (Wicklow Mountains, Macgillycuddy’s Reeks, Connemara, Killarney), it is best to plant in spring (April–May) or autumn (September–October), avoiding periods of waterlogged soil in winter and strong winds, which pose the main risk to newly planted trees in these areas.
The flowering period indicated on our website applies to regions in USDA Zone 9a, such as the East Coast and Midlands, including Dublin, Wexford, Waterford, Kilkenny and Portlaoise.
This will vary depending on where you live:
- On the west coast and in the northwest (Galway, Limerick, Sligo, Donegal and Westport), it will be delayed by one to two weeks compared to the given dates, due to stronger Atlantic winds and less spring sunshine.
- In the inland hills and plateaus (the Wicklow Mountains, the Macgillycuddy's Reeks, Connemara and Killarney), flowering will be delayed by two to three weeks. Flowering mainly occurs between May and July, with the limiting factors being less frost and more of the excessive humidity, strong winds and lack of sunshine that are characteristic of these areas.
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