Polemonium caeruleum Brise d'Anjon
Polemonium caeruleum Brise d'Anjon
Polemonium caeruleum Brise d'Anjon
Polemonium caeruleum Brise d'Anjon
Polemonium caeruleum Brise d'Anjou (Blanjou)
Jacob's Ladder, Greek Valerian
I love it! It has recovered well and is very beautiful, both in its foliage and its flowers.
Muriel, 26/05/2025
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This plant carries a 12 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.
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Description
Polemonium caeruleum 'Brise d'Anjou', also known as Jacob's Ladder and Greek Valerian, is an absolutely delightful variety recently discovered by chance in a nursery in Angers, France. It is a dense and bushy perennial that resembles an exotic fern from a distance, with feathery variegated foliage of green and white-cream. It flowers from May to August, producing panicles filled with bright blue-mauve flowers, shaded with a central purple ring and enhanced by yellow-orange stamens. This plant will make a great impact in the background of borders. Very hardy and easy to grow, it prefers fertile, well-drained and moist soils in sunny or partially shaded positions.
Polemonium caeruleum belongs to the Polemoniaceae family. This herbaceous perennial plant is native to temperate regions of Europe and North America, and is particularly well adapted to cold climates.
The 'Brise d'Anjou' variety, also known as 'Blanjou', distinguishes itself with its magnificent variegated foliage. It is a herbaceous perennial plant that forms an imposing clump, reaching a height of 50 cm (20 in) with a spread of 40 cm (16 in). Its foliage is deeply divided into 25 leaflets, which are dark green with pale yellow to white-cream margins. The Polemonium genus is characterised by its fern-like foliage, with dozens of small leaflets arranged perpendicular to the central vein, resembling the rungs of a ladder. In 'Brise d'Anjou', in late spring or early summer, the green stems rise above the foliage, bearing clusters of cup-shaped flowers with five petals. The heart of each blue-mauve flower is surrounded by a small violet circle that borders a white throat filled with yellow stamens that turn orange when covered in pollen.
Very hardy (-30 °C (-22 °F)) and easy to grow, Polemonium caeruleum 'Brise d'Anjou' will be undemanding and stunning in the middle of borders. It thrives in any type of slightly alkaline to slightly acidic, fertile, humus-rich, moist, well-drained, and humid soil. Plant it in mixed borders or mass plantings in combination with the wild species, vibrant blue flowers, anemones, pasqueflowers, or orange blooms like Potentilla fruticosa 'Hopleys Orange', with which it will create a delightful pairing. This variety prefers partially shaded positions. It blends well with different foliage and flower colours, and adapts well to wooded gardens, rockeries, along pathways, or placed prominently as a specimen in a pot, its flowering attracting attention above the misty mass of its colourful foliage.
Polemonium caeruleum Brise d'Anjon in pictures
Flowering
Foliage
Plant habit
Botanical data
Polemonium
caeruleum
Brise d'Anjou (Blanjou)
Polemoniaceae
Jacob's Ladder, Greek Valerian
Cultivar or hybrid
Planting and care
Polemonium caeruleum Brise d'Anjou is easy to grow. It should be planted in a soil that remains moist but well-draining, in full sun or partial shade. Polemoniums do not tolerate the combination of high heat and humidity in regions with hot summers. The foliage can scorch under intense sunlight. The best results are achieved in regions with cooler summers. To prevent excessive spreading of the plant, be sure to remove faded flowers to avoid spontaneous sowing, in order to obtain a second flowering and better foliage. Prune the plant in autumn. Polemoniums generally do not need to be divided and they do not tolerate transplanting.
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).
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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.