Primula vulgaris Porcelain Blue F1 - English Primrose
Primula vulgaris Porcelain Blue F1 - English Primrose
Primula x vulgaris Porcelain Blue
Primrose, Common Primrose, English Primrose
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Description
Primula ‘Porcelain Blue’ F1 is a primrose from the Spéciales compactes F1 range bearing very pale lavender blue, almost milky flowers, lit by a bright yellow centre. Its corollas have a cool, soft colour that is easy to match with whites and pale pinks. Plant it in a pot, a window box, or in rows along a small shady border.
This primrose belongs to the Primulaceae family. 'Porcelain Blue' F1 is a horticultural selection from the Spéciales compactes F1 range, developed for pots, with a naturally low habit and medium-sized flowers sporting unusual colours. F1 means that the young plants come from a controlled cross-breeding between two selected lines, in order to obtain uniform plants. This variety is grown as a short-lived perennial, most often as a biennial or seasonal plant. It forms a low, dense clump of puckered leaves, and in a few weeks will reach 10 to 20cm in height when in flower, 15 to 25cm in spread. Dimensions suited to small pots and window boxes. The leaves are ovate to spatulate, crinkled on the edges, strongly veined, light green to medium green. The foliage remains decorative, but can be more or less deciduous in summer drought or during hard frosts. The single flowers open just above the foliage, at the top of short peduncles. Each shows five rounded lobes, slightly crinkled on the edge. Their colour is a mix of very pale porcelain blue and lavender blue in the folds of the petals. Fine light veins are visible up close. The centre forms a bright yellow star around a small green eye. Flowering occurs in January and February in pots in a cold greenhouse, and continues until March outdoors. ‘Porcelain Blue’ is a pastel shade, close to the cool blues of old porcelain.
‘Porcelain Blue’ F1 is superb in a window box or a low pot, placed near a window so that its refined flowers can be admired up close. You can also plant it in a ribbon at the front of a slightly damp border. Plant it alone or in a mix with Rambo F1 White primrose, pure white with an orange-yellow centre, and 'Belarina Baltic Blue', double, sky blue veined with deeper blue. For pansies, choose Viola cornuta 'Sorbet XP Coconut Swirl', with small white flowers edged in black-blue, and Ultima Morpho F1 pansy, light blue and lemon yellow, which picks up the yellow centre of the primrose.
Primula vulgaris Porcelain Blue F1 - English Primrose in pictures
Flowering
Foliage
Plant habit
Botanical data
Primula
x vulgaris
Porcelain Blue
Primulaceae
Primrose, Common Primrose, English Primrose
Cultivar or hybrid
Planting and care
Plant Primroses Porcelain Blue F1 in containers and planters or directly in open ground in finely prepared, enriched soil. If possible, plant them as soon as you receive them, in September-October or March-April. If the intended location is not yet ready or conditions are unfavourable for planting, you can grow them on in pots for 4 to 6 weeks.
In containers and planters, use a good potting compost for flowering plants (such as geranium compost) enriched with clay and a slow-release fertiliser, light and well-draining. The top of the root ball should be level with the compost. Water generously at planting and for the following weeks, as plug plants can dry out quickly. However, be careful not to overwater! Ensure containers have drainage holes and empty the saucer 10 minutes after watering. Remember to water even during winter if there is no rain or if the container is in a spot sheltered from rainfall. Do not water when it is freezing.
Primroses are floriferous and fast-growing, hungry plants. From the resumption of growth at the end of February, beginning of March, and throughout the flowering period, apply a liquid fertiliser for flowering plants containing iron and trace elements 1 to 2 times per week with watering water. Remove faded flowers to encourage new blooms. Once flowering is over, plants in containers can be replanted in the garden in partial shade.
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).
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.