- You Will Get 100 Seeds Of Wee Willie Dwarf Sweet William Mixed Colors Dianthus Barbatus Flower Seeds. - Description: - Name: Wee Willie Sweet William. - Other Common Names: Dwarf Sweet William Mix. - Scientific Name: Dianthus Barbatus. - Color: Mixed Colors - Bicolor Blooms In Shades Of Red, Pink, & White. - Plant Seeds: At 60f. - Bloom Time: Spring – Summer. - Hardiness Zone: 2 – 9. - Plant Height: 6 - 12". - Plant Spacing: 6 - 10". - Light Requirements: Sun - Part Shade. - Soil & Water Preferences: Average.