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Campanula medium Blue Bell - Canterbury bells seeds

Campanula medium
Canterbury bells, Bellflower, Calycanthema

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This pretty Campanula is a biennial plant that first forms a rosette of leaves in its first year, before producing its spectacular flowering in the second year. It then sends up flower stems around sixty centimetres high, covered in bell-shaped flowers in various shades of blue. A traditional plant for cottage gardens, it adds a romantic touch to borders and makes for lovely indoor bouquets. Sow with warmth in very early spring or a little later directly in the ground.
Flower size
3 cm
Height at maturity
65 cm
Exposure
Sun, Partial shade
Germination time (days)
18 days
Sowing method
Direct sowing, Sowing under cover with heat
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Sowing period March to April, June to July
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Flowering time May to August
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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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Campanulas: planting, growing and care
Family sheet
by Alexandra 16 min.
Campanulas: planting, growing and care
Read article

Flowering

Flower colour blue
Flowering time May to August
Inflorescence Spike
Flower size 3 cm
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Deciduous
Foliage colour dark green

Plant habit

Height at maturity 65 cm
Spread at maturity 40 cm
Growth rate normal

Botanical data

Genus

Campanula

Species

medium

Family

Campanulaceae

Other common names

Canterbury bells, Bellflower, Calycanthema

Botanical synonyms

Campanula medium var. calycanthema

Origin

Cultivar or hybrid

Product reference24488

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.

22
7,50 €
6
17,50 €

Sowing period

Sowing period March to April, June to July
Sowing method Direct sowing, Sowing under cover with heat
Germination time (days) 18 days

Intended location

Suitable for Meadow, Woodland edge
Type of use Border, Free-standing, Container
Hardiness Hardy down to -23°C (USDA zone 6a) Show map
Ease of cultivation Amateur
Exposure Sun, Partial shade
Soil pH Any
Soil moisture Moist soil, Deep, rich

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