Overview
Geranium 'Blue Thunder' is a clump-forming, mat-forming, trailing, carpet-forming herbaceous perennial in the genus Geranium, part of the Geraniaceae family, with light green, bright green, silvery, dissected, patterned foliage. Geranium 'Blue Thunder' grows best in full sun, and tolerates loam soils and neutral pH. Its UK hardiness is rated H5. Suggested uses include borders, cottage gardens, rock gardens, woodland beds and containers.
About
Geranium 'Blue Thunder' is a cultivar of the Geranium genus, which includes a range of herbaceous or evergreen plants with rounded, often palmately lobed leaves and five-petalled flowers arranged loosely. This cultivar forms clumps and mats, trailing to create a carpet-like effect. It features bright green foliage and thrives best in full sun on well-drained, neutral loam soil, ideally in a sheltered, south-, west- or east-facing aspect. Hardy to UK zone H5, it is suitable for borders, cottage and rock gardens, woodland beds, and containers, offering summer interest with relatively undemanding cultivation requirements.
Growing conditions
Best soil and position for Geranium
- Sunlight
- Full sun
- Soil type
- Loam
- Soil pH
- Neutral
- Soil moisture
- Well-drained
- Aspect
- South-facing, West-facing, East-facing
- Exposure
- Sheltered
- UK hardiness
- H5
Plant details
Geranium 'Blue Thunder' size, habit and characteristics
- Plant type
- Herbaceous Perennial
- Habit
- Clump-forming, Mat-forming, Trailing, Carpet-forming
- Foliage
- Light green, Bright green, Silvery, Dissected, Patterned
- Suggested uses
- Borders, Cottage gardens, Rock gardens, Woodland beds, Containers
Care notes
Pruning and caring for Geranium 'Blue Thunder'
- Propagation
- Seed, Division, Cuttings
- Pest resistance
- Aphids, Vine weevil, Caterpillars, Thrips
- Disease resistance
- Grey moulds
Frequently asked questions
Where is the best place to plant Geranium 'Blue Thunder'?
Geranium 'Blue Thunder' prefers full sun. It suits sheltered positions.
What soil does Geranium 'Blue Thunder' need?
Geranium 'Blue Thunder' grows best in loam soil. It prefers neutral soil. Aim for soil that stays well-drained.
Is Geranium 'Blue Thunder' hardy in the UK?
Geranium 'Blue Thunder' has an RHS hardiness rating of H5, meaning it is hardy in most of the UK, tolerating -15 to -10°C.
How do I propagate Geranium 'Blue Thunder'?
Seed, Division, Cuttings.
More in the Geranium genus
- Geranium 'Brookside'Geranium
- Geranium 'Copper Tiger'Hardy Geranium
- Geranium 'Nimbus'Geranium
- Geranium 'Orion'
- Geranium 'Patricia'
- Geranium 'Purple Rain'cranesbill 'Purple Rain'
- Geranium 'Red Dwarf'
- Geranium 'Rozanne'
