- Name: Cardinal Dianthus - Scientific Name: Dianthus Caryophyllaceae - Color: Scarlet Red - Plant Seeds: Outdoors After Frost / Indoors Weeks Before Last Frost - Bloom Time: Summer - Hardiness Zone: 3 - 8 - Plant Height: 8 - 15" - Plant Spacing: 6 - 9" - Light Requirements: Sun - Soil & Water Preferences: Average - Quantity: 100 Seeds - Other: Fragrant  These Miniature Carnations Bloom All Summer Long And Make An Excellent Cut Or Dried Flower. They Attract Bees, Birds, Butterflies, And Even Hummingbirds!