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botanical name:
Viola cornuta 'Callisto Black Duet'
Viola cornuta 'Callisto Black Duet' © Deeproot Plant Base
family:  Violaceae
characteristics: perennial, evergreen
height: 0.15m
width: 0.40m
growth rate: medium
growth habit:
leaf colour: green
flower colour: violet
main season: Spring
aspect: full sun, part shade
conditions: moist soil, sandy soil
preferred soil pH: neutral-acid
minimum temp: -18°C
USDA zone: 7 to 9
Small flowers of blue-violet with dark blackish purple upper petals, over a long period in spring and summer. Dense low growing evergreen foliage.

Moist, well drained, reasonably fertile soil in sun or part shade.
Dead-head to prolong flowering.
Cut back after flowering to keep tidy.

Borders, bedding or containers.

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