Family: Violaceae (vy-oh-LAY-see-ee) (Info)
Genus: Viola (vy-OH-la) (Info)
Species: riviniana (riv-in-ee-AH-nuh) (Info)
 3 members have or want this plant for trade.
Category:
Alpines and Rock Gardens
Perennials
Height:
under 6 in. (15 cm)
6-12 in. (15-30 cm)
Spacing:
9-12 in. (22-30 cm)
12-15 in. (30-38 cm)
15-18 in. (38-45 cm)
Hardiness:
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
Sun Exposure:
Sun to Partial Shade
Light Shade
Partial to Full Shade
Danger:
Unknown - Tell us
Bloom Color:
Blue-Violet
Bloom Time:
Late Spring/Early Summer
Mid Summer
Foliage:
Evergreen
Deciduous
Smooth-Textured
Veined
Other details:
May be a noxious weed or invasive
Average Water Needs; Water regularly; do not overwater
Self-sows freely; deadhead if you do not want volunteer seedlings next season
Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Patent Information:
Unknown - Tell us
Propagation Methods:
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; sow indoors before last frost
From seed; direct sow after last frost
Seed Collecting:
Allow pods to dry on plant; break open to collect seeds
Properly cleaned, seed can be successfully stored
| 
