- You Will Get 250 Seeds Of Ornamental Indian Sorghastrum Nutans Native Grass Seeds. - Description: - Name: Indian Grass. - Scientific Name: Sorghastrum Nutans. - Color: Blue-Green That Turns Red-Orange In Fall. - Plant Seeds: Outdoors After Frost / Indoors Weeks Before Last Frost. - Plant Height: 60 - 84". - Plant Spacing: 24 - 36". - Bloom Time: July – Aug. - Hardiness Zone: 3 – 9. - Light Requirements: Sun - Part Shade. - Soil & Water Preferences: Average – Dry.