Dynamic foliar color is the hallmark of this gorgeous bluestem which emerges soft blue-green, changes to vibrant green with purplish-red highlights during summer, then matures to burgundy-black for autumn. ‘Blackhawks’ is a sturdy drought resistant grower, staying upright and thriving in most well drained soils. It can be used as a specimen, backdrop, or companion to shorter grasses and perennials. 2026 Perennial Plant of the Year.
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Details
Hardiness Zone:
3
Blossom Color:
Tan to Brown
Growth Habit:
Clump Forming
Max Height:
5'
Texture:
Fine Texture
Recommended Spacing:
12" to 2'
We sell this plant in these containers:
#2 Pot
Special Characteristics
Cuttings
Seasonal Effect
Moderate Area
Salt Tolerant
Drought Tolerant
Large Area
Deer Resistant
Sandy Soil Tolerant
Controls Erosion
Native Cultivar
Award Winning
Features
Dynamic foliar color is the hallmark of this gorgeous bluestem which emerges soft blue-green, changes to vibrant green with purplish-red highlights during summer, then matures to burgundy-black for autumn.
Landscape Value
It can be used as a specimen, backdrop, or companion to shorter grasses and perennials.
Care
Watering:
'Blackhawks' Big Bluestem is very drought tolerant and typically only needs watering during the hottest days of summer.
Fertilizing:
'Blackhawks' Big Bluestem needs little fertilizer, but benefits from a single springtime or fall topdressing (about 1 inch deep) of organic compost or well rotted leaves. Alternatively, a springtime application of a slow release fertilizer with a 3-1-2 ratio (such as a 15-5-10) can be applied at a rate of about 10 pounds per 1000 square feet.
Pruning:
'Blackhawks' Big Bluestem should be enjoyed all winter long, then, during early April before it begins to grow again, it should be pruned or mowed back to ground level.
