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Campanula medium Big Ben White Improved coated seeds - Canterbury bells

Campanula medium 'Big Ben White' Improved
Bellflower, Calycanthema

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This white campanula is part of a series of cultivars selected for their large, erect bell-shaped flowers, borne on 60–70 cm stems. Very floriferous and fast-growing, it flowers from spring to summer in temperate climates. The coated seeds make sowing easier. It is hardy and performs well in borders or in vases. Sow from January to May under heated cover (20–22 °C) or in July–August in a nursery bed for flowering the following spring.
Flower size
4 cm
Height at maturity
65 cm
Exposure
Sun, Partial shade
Germination time (days)
18 days
Sowing method
Direct sowing, Sowing under cover, 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 F1 ‘Big Ben White Imp.’ is a selection of campanula that provides stems covered with white bells, facing upwards, highly sought after for flower beds and cut flowers. The 'Big Ben' series is distinguished by its floribundity, regularity and short growing cycle: it offers a beautiful, bright note in the garden, from late spring to summer.
Sowing is less tricky with coated seeds: the very fine seed is surrounded by a layer of clay or neutral material that gives it volume. It is easier to handle and sow individually.

Belonging to the Campanulaceae family, Campanula medium is the botanical species at the origin of this F1 hybrid cultivar. The Big Ben series is a creation of “Evanthia Genetics”, offered in raw or coated seeds; the mention “White Imp.” means an improvement of the white form. Compared to the type species, Big Ben provides larger, well-erect flowers, better growth uniformity and very good performance in transport and in the vase. The flower stems reach 60–70cm
The botanical species C. medium is native to South-Western Europe, naturally present on sunny slopes and rocks in south-eastern France as well as in northern and central Italy. In nature, the plant behaves as a robust biennial: leafy rosette in the first year, flowering in the second. It can be grown as an annual when sown early. 

In 'Big Ben White imp.', the flower stalks bear numerous erect, campanulate corollas 4 to 5 cm wide, with five lobes. The foliage is medium to dark green; the basal leaves are broader and petiolate, the upper ones are lanceolate and sessile. The stiff stems are suitable for cutting and last several days in a vase. The root system of this campanula is a taproot; the plant does not tolerate repotting late. Flowering spans from May to July.

In British cottage gardens, "Canterbury bells" have been grown for centuries for their bell-like flowers; in Italy and Provence, they are still found growing wild on sunny rocky embankments.

‘Big Ben White Imp.’ brings light and elegance to mixed borders, natural-style flower beds and cut-flower beds. Plant it in groups of 5 to 7 plants in the middle of the flower bed, in front of light shrubs, in deep, rich, well-drained soil, in non-scorching sun. To enjoy it longer in the garden or in a vase, sow this campanula at the end of winter and again at the end of summer. Combine it with light blooms: Digitalis purpurea ‘Snow Thimble’ in the background, Delphinium 'Sky Blue-White Bee' for a cool note, Nigella damascena ‘Miss Jekyll Alba’ as a cloud, and Gypsophila paniculata ‘Bristol Fairy’ to lighten both bouquets and flower beds. In a 5 to 7 litre pot, provide a draining substrate and regular watering without excess; the flower stalks will be slightly shorter, but just as generous.

 

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Campanulas: planting, growing and care
Family sheet
by Alexandra 16 min.
Campanulas: planting, growing and care
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Flowering

Flower colour white
Flowering time May to August
Inflorescence Spike
Flower size 4 cm
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Deciduous
Foliage colour green

Plant habit

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

Botanical data

Genus

Campanula

Species

medium

Cultivar

'Big Ben White' Improved

Family

Campanulaceae

Other common names

Bellflower, Calycanthema

Botanical synonyms

Campanula medium var. calycanthema

Origin

Cultivar or hybrid

Product reference24959

Planting and care

Sowing Campanula medium 'Big Ben White' F1 can be done in two ways:

1/ early in the season, from February to April, under cover heated to 18°C using a seed tray placed under a mini greenhouse. Fill it with special seed compost, sow the seeds on the surface, barely covering them with compost, or better, with vermiculite, as they need light to germinate. Keep the substrate moist but not waterlogged and aerate regularly to prevent damping off. When the seedlings start to grow, prick them out into 7 cm pots or small 8 or 9 cm pots to raise them. When the roots have sufficiently filled the volume of compost, plant them in their final position in open ground at a density of about 10 plants per square metre.

2/ you can also sow in late spring/early summer in open ground in well-prepared and well-loosened soil. Sow the seeds in furrows, at a depth of 6 mm, spaced 15 cm apart. Transplant the seedlings before they become too developed, with a spacing of 15 cm, in a border reserved for their cultivation. Plant outdoors with a distance of 38 cm between each plant, in the final position.

Its cultivation is not difficult, but it is essential to give this campanula a rich and deep soil. Also ensure it does not lack water. Full sun tends to fade its colours; light shade gives the best results.

Sowing period

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

Intended location

Suitable for Meadow, Woodland edge
Type of use Border, Edge of border, Free-standing, Cut flowers, Container
Hardiness Hardy down to -18°C (USDA zone 7a) Show map
Ease of cultivation Amateur
Exposure Sun, Partial shade
Soil pH Any
Soil moisture Moist soil Deep, rich

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