Overview
Viola x wittrockiana 'Ultima Silhouette Supreme Formula Mix' (Supreme Series) is a clump forming herbaceous perennial in the genus Viola, part of the Violaceae family, with evergreen, semi evergreen foliage. Viola x wittrockiana 'Ultima Silhouette Supreme Formula Mix' (Supreme Series) 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 x wittrockiana 'Ultima Silhouette Supreme Formula Mix' (Supreme Series) is a clump-forming herbaceous perennial belonging to the Viola genus, known for its distinctive five-petalled flowers. This cultivar features evergreen to semi-evergreen foliage and thrives in full sun or partial shade, favouring south, west, or east-facing aspects. It grows well in a variety of soil types, including chalk, clay, loam, and sand, with a preference for moist but well-drained conditions. Hardy to UK zone H5, it is suitable for use in cottage gardens, patios, city gardens, flower borders, and as underplanting for roses and shrubs, with interest from spring through to autumn.
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 x wittrockiana 'Ultima Silhouette Supreme Formula Mix' (Supreme Series) 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 x wittrockiana 'Ultima Silhouette Supreme Formula Mix' (Supreme Series)
- 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 x wittrockiana 'Ultima Silhouette Supreme Formula Mix' (Supreme Series)?
Viola x wittrockiana 'Ultima Silhouette Supreme Formula Mix' (Supreme Series) prefers full sun and partial shade. It suits exposed and sheltered positions.
What soil does Viola x wittrockiana 'Ultima Silhouette Supreme Formula Mix' (Supreme Series) need?
Viola x wittrockiana 'Ultima Silhouette Supreme Formula Mix' (Supreme Series) 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 x wittrockiana 'Ultima Silhouette Supreme Formula Mix' (Supreme Series) hardy in the UK?
Viola x wittrockiana 'Ultima Silhouette Supreme Formula Mix' (Supreme Series) 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 x wittrockiana 'Ultima Silhouette Supreme Formula Mix' (Supreme Series)?
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)