Geranium 'Rozanne'
Cranesbill
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Supplied as an established plant in a 3 litre pot
Aspect
Full sun to partial shade
Hardiness
Fully hardy in most parts of the UK.
Flowers
Summer to autumn
Soil
Loam, sand, clay, chalk
About this plant
The hardy geranium that simply will not stop
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Description
Geranium 'Rozanne' is a vigorous, mound-forming hardy geranium producing an exceptionally long succession of large, saucer-shaped flowers in a rich violet-blue with a white centre and delicate darker veining. It begins flowering in early summer and continues with remarkable persistence until the first autumn frosts, far outlasting most other hardy geraniums. The foliage is deeply divided and attractive in its own right, taking on warm russet and orange tints in autumn before dying back. It is an outstanding pollinator plant and one of the most celebrated and widely planted hardy geraniums in cultivation. -
Why we like it
Specs & details
The particulars
- Botanical name
- Geranium 'Rozanne'
- Common name
- Cranesbill
- Supplied as
- 3 litre pot
- Flower colour
- Purple
- Eventual height
- 40–50 cm
- Eventual spread
- 60–90 cm
- Flowering period
- Summer to autumn
- Habit
- Sprawling mound-forming perennial
- Life cycle
- Herbaceous perennial
- Hardiness
- Fully hardy in most parts of the UK.
- Aspect
- Full sun to partial shade
- Soil type
- Loam, sand, clay, chalk
- Moisture
- Moist but well-drained to well-drained
- Position
- Front of border, mid-border, ground cover, patio container
- Plant spacing
- 3 plants per m²; or allow 60–90 cm between plants
- Growing skill
- Easy to grow
Plant calendar
When to plant, when it performs
Planting & care
Help it thrive
Planting guide
Geranium 'Rozanne' is tolerant of a wide range of soils and aspects, making it one of the most straightforward perennials to establish. Plant in spring or early autumn, setting the crown at soil level and spacing plants around 60–75 cm apart to allow for the generous spread. It performs well in sun or partial shade, though flowering is most prolific in a position that receives at least a few hours of direct sun each day. On very heavy, waterlogged soils, incorporate grit and compost to improve drainage before planting. It also grows well in large containers filled with a good loam-based compost, though container plants will need more regular watering than those in the ground.
Care tips
Geranium 'Rozanne' is one of the least demanding border perennials. Once established it needs little attention beyond an annual cut-back. If the plant begins to look tired or flowering slows during a hot spell in midsummer, cut the whole plant back to within a few centimetres of the ground; it will regenerate quickly and produce a fresh flush of flowers within a few weeks. In late autumn or early spring, cut all the stems back to ground level. No regular feeding is required on reasonably fertile soils; an occasional top-dressing of garden compost in spring is sufficient. Avoid disturbing the rootstock unnecessarily, as established clumps flower more freely when left in place.
Winter care
Geranium 'Rozanne' is fully hardy and requires no winter protection anywhere in the UK. The plant dies back to a woody rootstock after the first frosts. Cut back all the old stems and foliage to ground level in late autumn or early spring, whichever is more convenient. In mild winters some foliage may persist at the base; remove any that looks tatty in early spring as new growth begins to emerge. No division is necessary unless you wish to propagate, as established plants perform better when left undisturbed.