
How to plant and care for Hardy Geranium (Rozanne)
Geranium 'Rozanne'
🌸 Flower
🔁 Perennial
The plant of the centenary: violet-blue, white-eyed flowers from June to November, rambling between other plants. Easy in sun or part shade.
When to plant and care for it
JanFebMarAprMayJunJulAugSepOctNovDec
Flowers
Timed for a typical UK garden (last frost mid-April). The app uses your own town's frost dates.
Growing Hardy Geranium (Rozanne): what it needs
- Light
- Part shade · 6+ hours a day
- Watering
- Water well until established, then in dry spells
- Soil
- Fertile, well-drained soil
- Spacing
- 60 cm
- Height
- 50 cm
- In pots
- Grows well in containers
- Feeding
- A little general feed in spring
- Hardiness
- USDA zones 5–8
Step by step
- On planting day
Plant
Plant at the same depth as it was in its pot, 60 cm apart, and firm in.
- 0–1 days after “Plant”
Water In Well
Give a full can of water, then keep moist for the first few weeks while roots establish.
- 7–14 days after “Water In Well”
Mulch Around the Base
Spread 5 cm of compost or bark around the plant, keeping it off the stems.
Every year
- JulyIn Flower
Violet-blue flowers for months.
- JulyMidsummer Trim (Optional)
If it sprawls, cut it back by half in midsummer; it regrows and flowers again in weeks.
- NovemberCut Back
Cut the old stems back to the central crown.
More flowers to grow
Photo: Dominicus Johannes Bergsma / Wikimedia Commons (CC BY-SA 3.0)





