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Duo for a white and blue flowering low wall

Campanula, Helianthemum

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Collection contains 5 plants

  • 3 x Campanula portenschlagiana
  • 2 x Helianthemum The Bride - Rock Rose

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This plant carries a 12 months recovery warranty

More information

A duo designed to adorn low walls or rockeries with graceful and abundant flowerings. The campanula, in an intense blue, elegantly climbs or cascades, while the 'The Bride' helianthemum illuminates the setting with its pure white. These two perennial plants withstand cold well (down to -15°C) and thrive in the sun in well-drained soil. Ideal for greening up confined spaces while adding a touch of freshness and naturalness.
Exposure
Sun
Hardiness
Hardy down to -15°C
Soil type
Chalky (poor, alkaline and well-drained), Silty-loamy (rich and light), Stony (poor and well-drained)
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Best planting time March, October
Recommended planting time February to May, September to November
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Flowering time May to September
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Collection items (5 plants)

Description

The Duo "for a white and blue flowered low wall" brings together two robust and elegant perennials, perfect for beautifying sunny walls, rockeries or borders. The campanulate bellflower (Campanula portenschlagiana) is a ground-covering plant that carpets the ground or gently cascades over stones, its small blue flowers forming a dense carpet throughout the summer. Alongside it, the 'The Bride' rock rose, with its delicate white flowers, offers a bright flowering in early summer. These two varieties thrive in the sun, require little maintenance, and tolerate cold winters well.

 
The duo consists of 5 plants:

3 Campanula portenschlagiana: also known as wall bellflower, this perennial forms a 15-20 cm high carpet. Its bell-shaped blue flowering spreads from May to September. With its evergreen dark green foliage, it maintains a beautiful appearance even in winter.

2 Helianthemum 'The Bride': this cultivar of rock rose is appreciated for its white flowers that generously bloom from May to July. it is small (20 cm high) and particularly bright. Its evergreen silvery-grey foliage adds a touch of softness to the garden, even when not in bloom.

Plant this duo in spring or early autumn, in light, well-drained soil and in full sun. On a low wall, cascade the Campanula portenschlagiana over the upper edge or at the base of the wall, 30 cm apart. The rock roses will be perfect in the front, to form low and compact cushions. Plan for 5 to 6 plants per m² for a beautiful mass effect. Good drainage is essential to prevent root rot in winter.

Pair this duo with Lavandula angustifolia 'Hidcote', for a harmony of violet and white tones, by placing 3 lavender plants (spaced 40 cm apart) behind the bellflowers to add volume and fragrance. Add 5 dwarf wormwood plants (Artemisia schmidtiana 'Nana'), its silvery foliage blends well with that of the rock rose and accentuates the colour contrast. Finally, introduce 4 snow-in-summer plants Cerastium tomentosum 'Yo Yo' to carpet the ground between the rock roses and enhance the bright effect. This ensemble occupies approximately 5 m² and creates a balanced and refined scene.

 

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Flowering

Flower colour two-tone
Flowering time May to September

Foliage

Foliage persistence Evergreen

Plant habit

Height at maturity 20 cm
Growth rate normal

Botanical data

Genus

Campanula, Helianthemum

Family

Campanulacées, Cistacées

Product reference22793

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Planting and care

The plants of the duo for a white and blue flowering low wall appreciate full sun, in well-drained, poor to moderately fertile soil. They thrive perfectly in rocky, sandy, even slightly chalky soil. Once established, they tolerate drought well and require little watering. It is important to ensure that the soil is never waterlogged, especially in winter, as excess moisture can cause root rot. They withstand cold temperatures down to -15°C, allowing them to be grown in many regions.

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Planting period

Best planting time March, October
Recommended planting time February to May, September to November

Intended location

Suitable for Rockery
Type of use Slope
Hardiness Hardy down to -15°C (USDA zone 7b) Show map
Ease of cultivation Beginner
Planting density 5 per m2
Exposure Sun
Soil pH Any
Soil type Chalky (poor, alkaline and well-drained), Silty-loamy (rich and light), Stony (poor and well-drained)
Soil moisture Dry soil, Moist soil, well-drained, rocky or stony

Care

Pruning instructions For the campanula, light pruning after flowering stimulates a new wave of flowers and helps maintain a compact shape. For the helianthemum, lightly prune it after the summer flowering to remove faded flowers and maintain a dense and harmonious silhouette. This also prevents the plant from becoming too bare at the base. It is advisable to avoid severe pruning, as helianthemums do not like to be cut into old wood.
Pruning Pruning recommended once a year
Disease resistance Good
Overwinter Can be left in the ground

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