From Carole B.
HollyBee's Violets, blue & white streaks Care Instructions
Common blue violet normally grows to a mature height of 20.0 cm (that's 7.8 inches imperial) so ensure you have enough space in your garden for this plant.
Remember to water moderately.
Your garden's USDA Hardiness Zone (5b) is within the ideal range for Common blue violet. The recommended range is between Zone 4 and 8.
Common blue violet requires a soil ph of 5.6 - 7.5 meaning it does best in acidic to alkaline soil.
More information about Violets, blue & white streaks is available in the Folia gardener's wiki. All Violets, blue & white streaks Care Instructions have been kindly provided by our members.