Andropogon gerardii Blackhawks
Andropogon gerardii 'Blackhawks' photo courtesy of Walters Gardens

Big Bluestem

About This Grass

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.

  • Height: 121-150 cm (4-5 ft)
  • Spread: 60 cm (24 in)
  • Cold Hardiness: Zone 3-9
  • Sun or Shade: minimum 6 hours direct sum
  • Bloom Time: late summer
  • Leaf Colour: black green darkening to black
  • Bloom Colour: tan to brown
  • Critter Resistance: deer and rabbits
  • Nature Attraction: birds

Growing and Maintenance Tips

Andropogon is not a fussy grower. It will tolerate just about any soil or moisture level as long as full sun is provided. Lean to average soils are best, as too much fertility will cause the plants to be more open and floppy in habit. It is very low maintenance and long lived once established.


New for 2021