Keep in mind when planting that Sweet Viola is thought of as hardy, so this plant will survive close to or on freezing temperatures.
By our calculations, you should look at sowing Sweet Viola about 90 days before your last frost date.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Sweet Viola is a hardy plant.
Sweet Violet, Sweet Viola ‘Scottish Strain’
Scottish Strain, UK Strain, Parma Violet, Violettes de Toulouse, Devon Violets