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Viola 'Roscastle Black' (Viola 'Roscastle Black')
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1 hour care
per year
per year
0.15m
Max height
Max height
0.25m
Max spread
Max spread
2-5 years
To maturity
To maturity
Plant details
Botanical name
Viola 'Roscastle Black'
Other names
Viola 'Roscastle Black', Violet 'Roscastle Black'
Genus
Viola Viola
Variety or Cultivar
'Roscastle Black' _ 'Roscastle Black' is a compact, clump-forming, evergreen perennial with ovate, toothed, dark green leaves and fragrant, velvety, black-flushed, dark purple flowers from spring into autumn.
Viola 'Roscastle Black' is: Evergreen
Habit
Compact, Clump-forming
Flower
Dark-purple, Flushed black in Spring; Dark-purple, Flushed black in Summer; Dark-purple, Flushed black in Autumn
Foliage
Dark-green in All seasons
How to care
Watch out for
Specific pests
Aphids , Glasshouse red spider mite , Slugs , Snails , Violet leaf midge Aphids , Glasshouse red spider mite , Slugs , Snails , Violet leaf midge
Leaf spot , Powdery mildew , Rust , Virus Leaf spot , Powdery mildew , Rust , Virus
General care
Pruning
Deadhead to prolong flowering. Cut back, mulch, and feed after flowering.
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Where to grow
Viola 'Roscastle Black' (Viola 'Roscastle Black') will reach a height of 0.15m and a spread of 0.25m after 2-5 years.
Suggested uses
Beds and borders, Coastal, Containers, Cottage/Informal, Garden edging, Underplanting
Cultivation
Best in moist but well-drained soil in a cool, sheltered, partially shaded site.
Soil type
Clay, Loamy, Sandy
Soil drainage
Moist but well-drained
Soil pH
Acid, Alkaline, Neutral
Light
Partial Shade, Full Sun
Aspect
South, East, West
Exposure
Exposed, Sheltered
UK hardiness Note: We are working to update our ratings. Thanks for your patience.
Hardy (H4)
Companion plants
We do not currently have companion plants added for this plant.
Botanical name
Viola 'Roscastle Black'
Other names
Viola 'Roscastle Black', Violet 'Roscastle Black'
Genus
Viola Viola
Variety or Cultivar
'Roscastle Black' _ 'Roscastle Black' is a compact, clump-forming, evergreen perennial with ovate, toothed, dark green leaves and fragrant, velvety, black-flushed, dark purple flowers from spring into autumn.
Foliage
Evergreen
Habit
Compact, Clump-forming
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Colour
Flower
Dark-purple, Flushed black in Spring; Dark-purple, Flushed black in Summer; Dark-purple, Flushed black in Autumn
Foliage
Dark-green in All seasons
How to care
Watch out for
Specific pests
Aphids , Glasshouse red spider mite , Slugs , Snails , Violet leaf midge
Specific diseases
Leaf spot , Powdery mildew , Rust , Virus
General care
Pruning
Deadhead to prolong flowering. Cut back, mulch, and feed after flowering.
Monthly care advice
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Where to grow
Viola 'Roscastle Black' (Viola 'Roscastle Black') will reach a height of 0.15m and a spread of 0.25m after 2-5 years.
Suggested uses
Beds and borders, Coastal, Containers, Cottage/Informal, Garden edging, Underplanting
Cultivation
Best in moist but well-drained soil in a cool, sheltered, partially shaded site.
Soil type
Clay, Loamy, Sandy
Soil drainage
Moist but well-drained
Soil pH
Acid, Alkaline, Neutral
Light
Partial Shade, Full Sun
Aspect
South, East, West
Exposure
Exposed, Sheltered
UK hardiness Note: We are working to update our ratings. Thanks for your patience.
Hardy (H4)
USDA zones
Zone 9, Zone 8, Zone 7, Zone 6, Zone 5
In order to add a note on this plant, please add this plant to your plant lists.
| This plant likes... | Garden match | |
| Soil types: | Clay, Loamy, Sandy | Tell us... |
| Soil drainage: | Moist but well-drained | Tell us... |
| Soil pH: | Acid, Alkaline, Neutral | Tell us... |
| Light: | Partial Shade, Full Sun | Tell us... |
| Aspect: | South, East, West | Tell us... |
| Exposure: | Exposed, Sheltered | Tell us... |
| Hardiness: | Hardy (H4) | Tell us... |
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