Viola riviniana (Common Dog-Violet)
Botanical Information
| Family | Violaceae |
| Genus | Viola |
| Species | riviniana |
| Category | Wildflowers & Weeds |
| Origin | Europe, North Africa. |
Details
| USDA Hardiness Zone | 6 |
| USDA Hardiness Ref. | |
| Canadian Hardiness Zone | 6a - 6b |
| Canada Hardiness Ref. | |
| RHS Hardiness Zone | H7 |
| RHS Hardiness Ref. | |
| Height | 10 cm |
| Spread | 10 - 50 cm |
| Growth | Medium |
| Flowering Period | April |
Description and Growing Information
| General Description | A matforming wildflower with heart shaped leaves. V. riviniana is a rhizomatous perennial native to much of Europe. |
| Shape | Matforming. |
| Landscape | Wildflower gardens, flower beds, flower borders. |
| Propagation | Propagate by seed. |
| Cultivation | Excellent for wild or woodland garden. Grow in moist but well-drained soil. |
| Pests | Susceptible to slugs, snails, violet gall midge, glasshouse red spider mites, pansy leaf spot, and powdery mildew. |
| Notable Specimens | St Agnes Head, Cornwall, United Kingdom. |
| Habitat | May be found in all types of soils, excluding acidic or very wet. |
| Leaf Description | Light green, heart-shaped leaves that grow at the base of the plant. |
| Flower Description | Purple, five-petaled that curve downwards as it grows from the stem. |
Photographs
Viola riviana, form. St Agnes Head, Cornwall, United Kingdom. 24/04/2019.
Scanning electron microscope image of pollen grain.
Viola riviniana 'Alba'.