Pratia pedunculata
Pratia pedunculata
Pratia pedunculata
Pratia pedunculata
Blue-star Creeper
Just like the pratia angulata bought at the same time, the young plant was devoured by slugs. There is nothing left of it. A shame, as I'm looking for a groundcover and this one really appealed to me.
Anne-Laure , 27/10/2025
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Description
Isotoma fluviatilis, also known as Pratia pedunculata, is a perfectly hardy spreading evergreen perennial. Its abundance of small pale-blue star-shaped flowers has the power to illuminate and enliven your garden, even in shady areas.
Isotoma fluviatilis belongs to the Campanulaceae family and is native to Australia and New Zealand, where it thrives in moist and shaded areas. However, this perennial adapts perfectly to our more continental climates. It is much more tolerant and resistant than helxine, with which it can still be associated, as it accepts both partial shade and full sun, humus-bearing soils and dry ones, and even frost (-10°C (14°F)).
This low-growing ground cover plant, not exceeding 5cm (2in) in height, will quickly form an elegant flowering carpet, especially among Japanese slabs or pavements that will emphasise its delicate variegated foliage and its 5-petal flowers that bloom from May to August. We recommend planting in autumn or spring, ensuring that the soil remains moist during its establishment and is free of weeds. Protect it from slugs and snails. We suggest planting it in voluptuous masses with shade-loving perennials to create a contemporary, minimalist scenography with a Japanese touch (for example, use horsetails as a dynamic backdrop, animated by ferns and some elfin plants mixed with helxine), or with sun-loving perennials to animate and dress an English garden path (such as wild rose, climbing iceberg or sombreuil roses perched on chestnut supports, and clumps of grasses punctuated by scabiosa, sage, and echinacea adorned with some erectums).
Pratia pedunculata in pictures
Flowering
Foliage
Plant habit
Botanical data
Pratia
pedunculata
Campanulaceae
Blue-star Creeper
Australia
Planting and care
They like moist soils, but we grow them in a rockery. We have mixed half our clayey soil with gravel to a depth of 10cm (4in) to provide them with a draining "mattress" to limit winter moisture. Experts believe they are not very hardy, but we have been cultivating them for about fifteen years without any problems. Normally evergreen, the foliage dies in harsh winters. In cold regions, it might be prudent to shelter these young plants in winter. Plant in any moist but well-drained soil. Do not mix them with large plants as they do not tolerate competition.
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).
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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