- You Will Get 300 Seeds Of Ornamental Big Bluestem Beardgrass Andropogon Gerardii Grass Seeds. - Description: - Name: Big Bluestem Grass. - Other Common Names: Turkeyfoot Grass / Beardgrass. - Scientific Name: Andropogon Gerardii. - Color: Blue & Then Burgundy Red In The Fall. - Plant Seeds: Outdoors After Frost / Indoors Weeks Before Last Frost. - Plant Height: 36 - 96". - Plant Spacing: 18 - 36". - Bloom Time: July – Aug. - Hardiness Zone: 3 – 9. - Light Requirements: Sun - Part Shade. - Soil & Water Preferences: Average – Dry.