Campanula medium Blue Bell - Canterbury bells seeds
Campanula medium Blue Bell - Canterbury bells seeds
Campanula medium
Canterbury bells, Bellflower, Calycanthema
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Description
Campanula medium is commonly known as Canterbury Bells, likely due to its bell-shaped flowers. As a biennial plant, it completes its life cycle over two years before dying back. It is in the second year that it will produce large clusters of single flowers in various bluish hues, as the seed packet does not contain a single variety but will yield individuals with a certain diversity of shades. Sowing is easy and will produce numerous young plants due to the small size of the seeds. Planted en masse, this Campanula makes a striking impact and will easily find a place within a flower bed, where its tall flowering stems will animate spring and summer. It is also valuable for creating very beautiful bouquets.
Campanula medium is a herbaceous plant from the Campanulaceae family, from which it gets its name. This highly diverse botanical family includes approximately 2000 herbaceous or woody species, spread across nearly all climate zones of the globe. While Campanula is the most well-known genus, Lobelias are equally appreciated in gardens. There are over 250 species of Campanulas, distributed in the temperate zones of the Northern Hemisphere.
Campanula medium is native to southern Europe. This biennial with an erect habit and relatively slow growth forms clumps of narrow leaves. In spring and early summer of the second year, it forms sturdy stems, sometimes over 1 metre in height. They become covered with bell-shaped flowers, with upturned edges, in shades ranging from white to blue through pink, with self-seeding being a source of great genetic variability. There are several horticultural varieties, some shorter than the typical plant, and available in different colours, with single or double bells of variable size.
These Canterbury Bell seeds will produce entirely single flowers, in different shades of light to intense blue. In the first year, a few weeks after sowing, the plant develops a clump whose basal rosette consists of medium to dark green, slightly waffled, hairy leaves, with a wavy, crinkled margin. In the second year, the Campanula produces flowering stems that rise to about 65 cm, or even more, in spring, which become adorned with numerous bluish bell-shaped flowers 3 to 4 centimetres long. Flowering is followed by the formation of capsules containing a great many small seeds (from 5000 to 12000 per gram!) that self-seed easily in the garden.
Sowing your single blue Canterbury Bell seeds will allow you to obtain numerous young plants that you can plant en masse, or in clumps within a mixed border, preferably in slightly moist soil and under light shade. Their utterly romantic charm will pair perfectly with Peonies, with their large, often intricate flowers, as well as with Old Roses, some of which add the pleasure of scent. Also use them for bouquets, mixing them with Baby's Breath to decorate your house in summer.
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Flowering
Foliage
Plant habit
Botanical data
Campanula
medium
Campanulaceae
Canterbury bells, Bellflower, Calycanthema
Campanula medium var. calycanthema
Cultivar or hybrid
Planting and care
Sowing can be done in two ways:
1/ Early in the season, from February to April, under a shelter heated to 18°C or in a propagator. Fill a seed tray with seed compost, sow the seeds on the surface, barely covering them with compost, or better still, with vermiculite, as they need light to germinate. Keep the substrate moist, but not excessively, and ventilate regularly to prevent the development of seedling rot. When the seedlings start to grow, prick them out into 7 cm modules or small 8 or 9 cm pots to grow them on. When the roots have sufficiently filled the compost, plant them in their final position in open ground at a density of about 10 young plants/m².
2/ You can also sow in late spring/early summer directly in open ground in well-prepared and well-loosened soil. Distribute the very fine seeds in furrows, at a depth of 6 mm, spaced 15 cm apart. Prick out the seedlings before they become too developed, spacing them 15 cm apart, in a seed bed. Plant outdoors in their final position, maintaining a distance of 38 cm between each plant.
While not difficult to grow, it is essential to provide this campanulate with rich and deep soil and ensure it does not lack water. Full sun tends to fade its colours; light shade gives the best results.
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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