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AGM plants have been through a rigorous trial and assessment programme. They are:
This plant will provide nectar and pollen for bees and the many other types of pollinating insects.
It is included in an evolving list of plants carefully researched and chosen by RHS experts. Divided into 3 groups these lists, linked below, are maintained by a team of RHS staff and are reviewed annually.
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Other common names cranesbill [Rothbury Gem]
Synonyms Geranium cinereum Rothbury Gem Geranium cinereum 'Gerfos'
Family Geraniaceae
Genus Geranium can be annuals, biennials and perennials, herbaceous or evergreen, with rounded, usually palmately lobed or divided leaves, and lax inflorescences of rounded, 5-petalled flowers
Details 'Rothbury Gem' is low-growing, forming dense cushions of rounded grey-green leaves, to 12cm high, spreading to 30cm. Pink flowers with darker veins and deep red-magenta eyes, to 4cm across, start appearing in late spring, and may rebloom at times all summer
Foliage Deciduous
Habit Mat forming
Hardiness
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H5
Full Sun
Partial Shade
Aspect South-facing or West-facing or East-facing
Exposure Exposed or Sheltered
Loam
Chalk
Sand
MoistureWell-drained, Moist but well-drained
SoilLoam, Chalk, Sand
pHAcid, Alkaline, Neutral
Ultimate height 0.1-0.5 metres
Ultimate spread 0.1-0.5 metres
Time to ultimate height 2-5 years
Cultivation Performs best with good drainage and sunlight. Effective ground cover plant
Propagation Propagate by basal cuttings
Suggested planting locations and garden types Garden Edging Cottage & Informal Garden Rock Garden Gravel Garden
Pruning Remove flowered stems and old leaves to encourage the production of fresh leaves and flowers
Pests May get vine weevil, capsid bug and sawflies
Diseases May be affected by downy mildews and powdery mildews
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
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