Primula japonica Mixed
Primula japonica Mixed
Primula japonica Mixed
Japanese Primrose
Like any seed, we have high hopes for the outcome ...
Corine B., 07/03/2018
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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.
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Description
The Primula japonica Mixed selection, or Japanese primrose, is a carefully hand-prepared mix of seeds. It brings together fascinating candelabra primroses, with upright flower stalks carrying flowers in white, pink, red or violet shades, often marked with a contrasting eye, arranged in whorls. These hardy perennial plants thrive in the sun or shade in cool to moist soil. They are perfect for bordering water features or in damp woodland areas.
The Japanese primrose, also known as Primula japonica section Candelabra, is a relatively unknown, reliable, and robust plant in the primrose family, yet it is rarely used in gardens. It is a vigorous deciduous herbaceous perennial species native to wet and wooded areas of Japan. The selection we offer gathers various cultivars derived from this plant. They form rosettes from which upright flower stalks emerge in late spring or summer, reaching heights of 30 to 60 cm (12 to 24in) with a spread of 30 to 40 cm (12 to 16in). The lanceolate, deciduous foliage is light green, with toothed leaves measuring 10 to 30 cm (4 to 12in) in length and crinkled. Flowering occurs from May to June in the form of tall vertical stalks producing several whorls of flowers forming tiers. Depending on the plants, the flowers are white, pink, red or violet, often marked with a darker and contrasting centre. They measure 1 to 2 cm (0 to 1in) in diameter.
Candelabra primroses are useful for flowering shady and damp gardens and thrive at the edge of watercourses in fertile, always cool, moist soil. They can be associated with astilbes, hostas, persicarias and rodgersias. Plant them in vigorous groups for greater impact. They are very robust and have a good lifespan if they are never short of water. This selection also allows for beautiful borders, filling shaded rockeries, and performs well in pots and planters.
Flowering
Foliage
Plant habit
Botanical data
Primula
japonica
Mixed
Primulaceae
Japanese Primrose
Cultivar or hybrid
Planting and care
Sowing:
The seeds of Japanese primroses germinate at 15-20 °C (59-68°F); higher temperatures can hinder germination. Sow on the surface of a moist, well-drained special sowing compost. Cover with a very fine pinch of vermiculite without completely covering the seeds. Place everything in a mini-greenhouse or a transparent plastic bag in a shaded area. Keep the compost moist but not waterlogged. Germination usually takes 10 to 30 days. Once some seeds have emerged, sprinkle the compost with a thin layer of sieved soil to facilitate the rooting of the seedlings.
Transplant the young plants when they are large enough to handle, into 8 cm (3in) pots. Grow them in a cooler environment, giving them plenty of water. Plant them outside, with a spacing of 23cm (9in).
Cultivation:
Candelabra primroses prefer moist to even marshy soils, a location near water would be perfect for them. Ideally, plant them in the shade, in a cool understory, for example. Ideally, the soil should be deep, humus-rich, neutral, slightly acidic, and even peaty. You can plant them in cooler regions in full sun, but only if the soil is moist throughout the year. Growing these species in pots and containers, in a mixture of compost and peat kept moist throughout the year is also possible. Place the pot in the shade, facing east or north.
Remove the foliage and faded flower spikes once a year, and divide clumps that have become too large. It is recommended to repot potted plants every two years to renew the substrate.
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).
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.
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