Geranium magnificum Rosemoor
Geranium magnificum Rosemoor
Geranium magnificum Rosemoor
Geranium magnificum Rosemoor
Geranium magnificum Rosemoor
Geranium magnificum Rosemoor
Geranium magnificum Rosemoor
Geranium x magnificum Rosemoor
Magnificent Cranesbill, Hardy Geranium
Little Rosemoor geranium that seems to be thriving where I planted it.
Nath44, 23/04/2025
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Description
The magnificum 'Rosemoor' perennial geranium is a robust and vigorous plant that forms a lush and regular clump and displays beautiful autumnal hues. It disappears in summer under its bright purple-veined mauve flowers. It is a sturdy and easy-to-grow plant. It gracefully withstands winter cold and occasional drought, showing little demands regarding soil type.
Geranium x magnificum 'Rosemoor' belongs to the geranium family. It is a hybrid, inheriting its large cordate and villous leaves from one parent, and its large intense blue-violet flower from the other. It stands out as a giant in the world of perennial geraniums, with its dome reaching 60 cm (24in) in height and 50 cm (20in) in diameter, and its growth is quite rapid. Flowering occurs in June-July, transforming the plant into a ball of flowers. The five-petaled cup-shaped flowers measure 4 cm (2in) in diameter, in finely purple-veined bluish violet. They are grouped in compact cymes. The foliage is deciduous, medium green, and takes on lovely colors in autumn. It is composed of broad, pubescent, lobed, and dentate leaves, overlapping each other. It is worth noting that all magnificum hybrids are sterile therefore, you will not obtain any seeds.
Geranium x magnificum 'Rosemoor' is suitable for all types of gardens, from wild to herb gardens, as well as well-maintained plant beds. It grows very well in large pots, on the terrace or balcony. It will be nicely complemented by orange flowers, such as those of daylilies, Chinese bellflower, and Alstroemeria aurantiaca.
Geranium magnificum Rosemoor in pictures
Flowering
Foliage
Plant habit
Botanical data
Geranium
x magnificum
Rosemoor
Geraniaceae
Magnificent Cranesbill, Hardy Geranium
Cultivar or hybrid
Planting and care
The perennial geranium magificum 'Rosemoor' prefers the sun, but never scorching, it also grows in partial shade. Ideally, plant it in ordinary soil, moist, humus-rich, not too acidic, well-drained. In clay soil, it is advisable to lighten the soil with coarse sand or leaf compost. It particularly fears waterlogged soils in winter, especially during its youth. This species tolerates difficult conditions, such as occasional drought periods, which will then stop the flowering. But it will never be as beautiful as in the sun, in rich and moist soil. Plant it early in spring or in autumn. Water regularly to help the plants establish. Regularly cutting off faded flowers promotes reblooming. Dividing clumps every three years in spring rejuvenates the plant. Easy to grow, it requires little maintenance.
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).
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.
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