Overview
Viola nephrophylla is a clump forming herbaceous perennial in the genus Viola, part of the Violaceae family, with evergreen, semi evergreen foliage. Viola nephrophylla grows best in full sun and partial shade, and tolerates most soils and any pH. Its UK hardiness is rated H5. Suggested uses include cottage and informal garden, patio and container plants, city and courtyard gardens, flower borders and beds and underplanting of roses and shrubs.
About
Viola nephrophylla, known as northern bog violet, is a clump-forming herbaceous perennial within the Viola genus, which includes a variety of growth forms with distinctive five-petalled flowers. This cultivar features evergreen to semi-evergreen foliage and thrives in moist, humus-rich soil, preferring dappled shade but tolerating dry shade once established. It is suitable for a range of garden settings including cottage and informal gardens, patios, city courtyards, and flower borders. Flowering in spring, it is hardy to UK zone H5 and can be propagated from seed sown in late winter or early spring.
Growing conditions
Best soil and position for Viola
- Sunlight
- Full sun, Partial shade
- Soil type
- Chalk, Clay, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- South-facing, West-facing, East-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H5
Plant details
Viola nephrophylla size, habit and characteristics
- Plant type
- Herbaceous Perennial
- Habit
- Clump forming
- Foliage
- Evergreen, Semi evergreen
- Suggested uses
- Cottage and informal garden, Patio and container plants, City and courtyard gardens, Flower borders and beds, Underplanting of roses and shrubs
Care notes
Pruning and caring for Viola nephrophylla
- Propagation
- Seed sown in late winter or early spring
- Pest resistance
- Slugs, Snails, Aphids, Glasshouse red spider mite, Violet gall midge
- Disease resistance
- Powdery mildews, Pansy leaf spot, A virus, A rust
Frequently asked questions
Where is the best place to plant Viola nephrophylla?
Viola nephrophylla prefers full sun and partial shade. It suits exposed and sheltered positions.
What soil does Viola nephrophylla need?
Viola nephrophylla is adaptable and grows happily in most soil types, including chalk, clay, loam and sand. It is happy in soil of any pH. Aim for soil that stays moist but well-drained.
Is Viola nephrophylla hardy in the UK?
Viola nephrophylla 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 Viola nephrophylla?
Seed sown in late winter or early spring.
More in the Viola genus
- Viola 'Imperial Antique Shades'
- Viola 'Ab5131'PBR
- Viola 'Alice Witter' (Vt)
- Viola 'Beatrice' (Vtta)
- Viola 'Black Knight'
- Viola 'Caroline' (Va)
- Viola 'Cinders' (Vtta)
- Viola 'Clover' (Va)