- Name: East Indies Aster - Scientific Name: Aster Tongolensis - Color: Violet Blue Petals With Yellow Centers - Plant Seeds: Outdoors After Frost / Indoors Weeks Before Last Frost - Bloom Time: Late Summer - Fall - Hardiness Zone: 4 - 9 - Plant Height: 18 - 20” - Plant Spacing: 15 - 18” - Light Requirements: Sun - Part Shade - Soil & Water Preferences: Average - Quantity: 50 Seeds - Other: Attracts Bees, Birds, & Butterflies!