Geranium Rozanne
Geranium Rozanne
Geranium Rozanne
Geranium Rozanne
Geranium Rozanne
Geranium Rozanne
Geranium Rozanne
Geranium Rozanne
Geranium Rozanne
Geranium 'Gerwat' Rozanne
Cranesbill, Storksbill, Hardy Geranium
I've just received my young plants. I'm perplexed by the geraniums because I can't even see them in their pots. I don't know what to make of this.
Michèle, 26/02/2026
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This plant carries a 12 months recovery warranty
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We guarantee the quality of our plants for a full growing cycle, and will replace at our expense any plant that fails to recover under normal climatic and planting conditions.
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Description
The Perennial Geranium Rozanne is a two-tone flowering plant that boasts uninterrupted blooms for months and is highly successful worldwide. It was even named "Plant of the Century" at the 2013 Chelsea Flower Show.
Perennial geraniums with two-tone flowers that are easy to grow are quite rare. The best-known variety, Geranium wallichianum, has remarkable blue flowers with white centres but can be challenging to cultivate. It thrives only in light soils and doesn't tolerate excess water. However, Geranium Rozanne shares the same characteristics, producing blue flowers with white centres approximately 5 cm (2 inches) in diameter. It blooms from late spring to autumn without interruption and boasts large, apple-green leaves with slight dark green markings in the centre. It has a creeping habit, spreading to form semi-bushy mats 20 to 30 cm (11.8 in) in height and 50 cm (19.7 in) in width.
This plant is unique in its ease of cultivation. It can grow in full sun or partial shade and still thrive. Interestingly, when grown in partial shade, its flowers appear more vibrant. It is a hardy plant that can withstand cold weather, even when damp, down to -16°C. It is not affected by heavy soils and excess water but prefers to grow in light, moist, and nutrient-rich soils.
It is also versatile and can be used to landscape slopes without requiring excessive watering. It can also be used as a border for flower beds alongside other easy-to-grow perennials like Nepeta 'Six Hill Giant', heucheras, and Phlox paniculata. Additionally, it can be used to fill the base of old shrub roses, adding interest to your garden during the summer.
Geranium Rozanne in pictures
Flowering
Foliage
Plant habit
Botanical data
Geranium
'Gerwat' Rozanne
Geraniaceae
Cranesbill, Storksbill, Hardy Geranium
Geranium 'Gerwat', Geranium Rozanne
Cultivar or hybrid
Planting and care
When planting Geranium 'Rozanne', work the soil to a depth of 20 cm (7.9 inches). Break up the ground well and sprinkle blood, fish and bone in the planting hole. Take the young plant out of its pot and position it, covering the top of the root ball with 3 cm (1.2 inches) of soil. Fill the hole and water generously to get rid of any air pockets. It's important to water regularly for a few weeks in dry weather to help the roots grow.
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.