Campanula portenschlagiana
Campanula portenschlagiana
Campanula portenschlagiana
Campanula portenschlagiana
Campanula portenschlagiana
Campanula portenschlagiana
Campanula portenschlagiana
Campanula portenschlagiana
Wall Bellflower
The campanula I received appears healthy. Planted in the ground, I'm now patiently awaiting its spring recovery...(or not?).
t, 05/11/2025
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Description
Campanula portenschlagiana also known as the wall bellflower or Campanula muralis, is a creeping perennial plant that forms beautiful long-lasting blankets of bright blue-violet flowers in spring and early summer, and sometimes again in September. Renowned for its robustness and adaptability, it is a classic in gardens. This wonderful, floriferous ground cover deserves a prominent place in rockeries, above a wall or in a planter from which it will happily cascade.
Campanula porscharskyana belongs to the campanula family. It is a small, very hardy perennial plant, native to the mountains of the Balkans. In the wild, it can be found in rock crevices and high mountain scree slopes. The plant forms a cushion 20 cm (8in) high, with a minimum spread of 60 cm (24in). It spreads through stems that root upon contact with the ground, allowing it to occupy an increasingly larger surface area. The flowering begins in late spring and continues throughout the summer, more prominently in cool climates. It is common for it to pause in summer, when it is dry and hot, followed by a resurgence in autumn. The star-shaped flowers measure 2 to 2.5 cm (1in) in diameter and are carried in loose panicles along hairy stems. The foliage is semi-evergreen to evergreen depending on the climate, composed of small, velvety, bright green leaves with long petioles, heart-shaped and toothed along the edges.
The wall bellflower is a mountain plant, it does not like very hot or dry climates, or hot nights. It thrives in light, not too dry, soil but dislikes stagnant humidity that can cause root rot. It is easy to provide these conditions in a sunny or semi-shaded rockery. It will quickly fill cracks in paving stones and cover old and low walls. Planted in a line, it will create adorable little, neat borders. It is suitable for wild gardens and pot planting, in a light and well-drained substrate. It can also be planted at the base of roses, small deciduous shrubs, or a hedge. In hanging baskets, it will cascade in small luminous curtains: combine it with a pink Diascia, a white-flowered annual euphorbia Diamond Frost or a lemon yellow Coreopsis, for example.
Campanula portenschlagiana in pictures
Flowering
Foliage
Plant habit
Botanical data
Campanula
portenschlagiana
Campanulaceae
Wall Bellflower
Central Europe
Planting and care
Campanula porscharskyana likes light, moist soils, but dislikes stagnant water that can cause the roots to rot. It needs well-drained soil, even limestone, but still slightly moist to thrive. Plant it in non-scorching sun, or partial shade, sheltered from strong winds that dry it out. This mountain plant does not like hot climates or nights where the temperature remains high. It develops well during hot days of a moderate summer tempered by short nights. Its spread can be easily controlled by cutting the creeping stems. Clean the foliage at the end of flowering and in spring. In pots, regularly provide organic fertilizer to support flowering.
Planting period
Intended location
Care
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).
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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 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.
The planting period indicated on our website applies to regions in USDA Zone 9a (East Coast and Midlands: Dublin, Wexford, Waterford, Kilkenny, Portlaoise). It will vary depending on where you live:
- On the west coast and in the north-west (Galway, Limerick, Sligo, Donegal, Westport), delay planting by 1 to 2 weeks in spring and bring it forward by 1 to 2 weeks in autumn compared to the dates given, preferably choosing periods without strong winds.
- In the inland hills and plateaus (Wicklow Mountains, Macgillycuddy’s Reeks, Connemara, Killarney), it is best to plant in spring (April–May) or autumn (September–October), avoiding periods of waterlogged soil in winter and strong winds, which pose the main risk to newly planted trees in these areas.
The flowering period indicated on our website applies to regions in USDA Zone 9a, such as the East Coast and Midlands, including Dublin, Wexford, Waterford, Kilkenny and Portlaoise.
This will vary depending on where you live:
- On the west coast and in the northwest (Galway, Limerick, Sligo, Donegal and Westport), it will be delayed by one to two weeks compared to the given dates, due to stronger Atlantic winds and less spring sunshine.
- In the inland hills and plateaus (the Wicklow Mountains, the Macgillycuddy's Reeks, Connemara and Killarney), flowering will be delayed by two to three weeks. Flowering mainly occurs between May and July, with the limiting factors being less frost and more of the excessive humidity, strong winds and lack of sunshine that are characteristic of these areas.