Overview
Geranium robertianum subsp. maritimum 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 robertianum subsp. maritimum 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 robertianum subsp. maritimum is a clump-forming and mat-forming perennial cultivar within the Geranium genus, known for its trailing and carpet-forming habit. It features light to bright green, silvery, and dissected foliage, typical of geraniums which have rounded, palmately lobed or divided leaves. This cultivar thrives in full sun on well-drained, neutral loam soil and is hardy to UK zone H5. Suitable for borders, cottage gardens, rock gardens, woodland beds, and containers, it is best grown in sheltered, south-, west-, or east-facing aspects during the summer season.
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 robertianum subsp. maritimum 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 robertianum subsp. maritimum
- 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 robertianum subsp. maritimum?
Geranium robertianum subsp. maritimum prefers full sun. It suits sheltered positions.
What soil does Geranium robertianum subsp. maritimum need?
Geranium robertianum subsp. maritimum grows best in loam soil. It prefers neutral soil. Aim for soil that stays well-drained.
Is Geranium robertianum subsp. maritimum hardy in the UK?
Geranium robertianum subsp. maritimum 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 robertianum subsp. maritimum?
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'