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We have combined these two powerful search tools into a single Find a Plant service searching over 250,000 plant records.
Virtually all of the features of the old searches are still available and in addition we have added several new features to create a more comprehensive and user friendly search experience.
When using this search
Search by plant name, key attributes or both to find plant details and a list of
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.
© RHS 2002
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Other common names
geranium 'Johnson's Blue'
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
'Johnson's Blue' is a clump-forming rhizomatous perennial to 30cm, with deeply lobed leaves and long-stalked flowers 5cm in width, with rounded, dark-veined, lavender-blue petals
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
Aspect South-facing or East-facing or West-facing or North-facing
Exposure Exposed or Sheltered
MoistureMoist but well-drained, Well-drained
SoilSand, Loam, Chalk, Clay
pHAcid, Alkaline, Neutral
Time to ultimate height
Grow in any, moderately fertile soil apart from waterlogged soils. Full sun or partial shade is best but shade is tolerated
Propagate by division in spring or propagate by basal cuttings in early to mid spring and root with bottom heat
Suggested planting locations and garden types
Flower borders and beds Ground Cover Underplanting of Roses and Shrubs Low Maintenance
Cottage & Informal Garden
Pruning Remove flowered stems and old leaves to encourage the production of fresh leaves and flowers
Pests Can get vine weevil, capsid bug and sawflies
May be affected by a downy mildew and powdery mildews
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
geranium 'Johnson's Blue'
Buy from £8.99 at the RHS Plants Shop
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