Andropogon gerardii is a tough, dryland, prairie grass native from southern Canada through southern United States. 'Blackhawks' is an exciting new introduction of Big Bluestem and one of the first to start the fall grass season. 'Blackhawks emerges deep green to dark purple in late summer and deepens to nearly black by fall. This grass offers amazing design possibilities because of its gorgeous coloured foliage and its compact and upright habit.