Lupinus polyphyllus My Castle - Large-leaved Lupine
Lupinus polyphyllus My Castle - Large-leaved Lupine
Lupinus polyphyllus Russell Hybrids Mon Château rouge
Large-leaved Lupine, Big-leaved Lupine, Garden Lupin, Russell Lupin
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Description
The perennial Russell Lupin or Lupinus polyphyllus 'My Castle' Red offers tall upright spikes in June and July, in a range of purple, red and carmine pink hues. This renowned variety is robust and offers a vibrant colour. Its tall, fragrant inflorescences, majestic and vertical, tower above beautiful bushy clumps of finely divided leaves. Easy to sow in situ, it can flower from the first year. It is a low-maintenance plant that thrives in ordinary soil, as long as it is deep, moist, and free from limestone, and in full sun.
It is widely accepted that Russell hybrid lupins are hybrids obtained through the cross-breeding of Lupinus polyphyllus, a perennial plant native to North America, and Lupinus hartwegii, an annual Mexican species. The best of them were patiently selected in the 1930s by a gardener named George Russell, a passionate lupin enthusiast. Since then, other enthusiasts have taken over and dedicated themselves to producing robust, floriferous, and highly reliable varieties. 'My Castle' is one of the most well-known cultivars, a variety that is part of the 'Band of Nobles' series which includes some celebrities like 'The Chandelier', 'The Chatelaine', and 'The Governor'. It is a vigorous herbaceous perennial plant, forming clumps at least 90cm (35in) tall when in flower and 60cm (24in) wide, with rapid growth. In late spring and early summer, in June-July, it displays plump spikes, sometimes reaching 50 cm (20in) in length, somewhat stiff-looking but remarkably graphic, densely filled with pea-like flowers measuring 1 to 3cm (0.5 to 1in) in shades of red-pink with a purple standard. Note that the flowers have a pleasant fragrance. The lush green foliage stands out from other legumes due to its palmate leaves with at least 5 leaflets radiating from a single petiole.
Perfect for poor and light soils, as long as they are free from limestone, perennial lupins readily self-seed in suitable gardens, providing a profusion of often fragrant spikes in rainbow colours. Softened their somewhat stiff silhouettes with plants with rounded curves, such as roses and Oriental poppies, in matching colours. They thrive in the company of hollyhocks and peonies, creating attractive low-maintenance borders. In natural areas, associate them with sainfoin, lucerne, vetches, and grasses.
Lupinus polyphyllus My Castle - Large-leaved Lupine in pictures
Flowering
Foliage
Plant habit
Safety measures
Botanical data
Lupinus
polyphyllus
Russell Hybrids Mon Château rouge
Fabaceae
Large-leaved Lupine, Big-leaved Lupine, Garden Lupin, Russell Lupin
Cultivar or hybrid
ingestion
Cette plante est toxique si elle est ingérée volontairement ou involontairement.
Ne la plantez pas là où de jeunes enfants peuvent évoluer, et lavez-vous les mains après l'avoir manipulée.
Pensez à conserver l'étiquette de la plante, à la photographier ou à noter son nom, afin de faciliter le travail des professionnels de santé.
Davantage d'informations sur https://plantes-risque.info
Planting and care
Sow from May to July, directly in place, as lupins do not transplant well. Bury the seeds at a depth of 6 mm (0in), in well-worked and well-loosened soil, with a spacing of 50cm (20in). The ideal temperature for germination should be 16 to 20°C. Germination usually takes 18 to 25 days. It is not necessary to thin out the sowing. Lupins grow well in any good garden soil, but prefer a deep, well-drained sandy soil with a slightly acidic tendency, and full sun. Lupins only live for 4 or 5 years. Plan to keep some seeds that will allow you to obtain sometimes surprising flowerings, in new colours.
Sowing period
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).
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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.