BIG BLUESTEM. Original American Native Prairie Grass. This colorful grass can reach 96" tall and forms clumps, which makes it great for the garden or large containers. Bluish in the spring, slowly turns red through the summer, and burgundy in fall and winter. Adding color to a winter landscape. Drought tolerant. Long life span 20+ years. Pretty much carefree after established. Hardy to -30F. Thank You! Andropogon gerardii. Perennial. Full sun / Part sun. Spring, soil temp 70F+. SOW - Broadcast thinly on surface, cover lightly. Keep moist. Germination in 30-45 days. Thin to 20". Height 36 - 96" x 20" Wide. Growth is slow 1st year while developing deep root system. Medium water. Flowers are purple. Blooms from June through September.