Pet Safe
moderate Care
big blue stem
Andropogon gerardii 'Blackhawks'
Big Blue Stem, or Andropogon gerardii 'Blackhawks', is a remarkable native grass with a captivating appearance. Its stunning black leaves give a bold contrast to the light tassel-like flower stems that appear in late summer. Its drought- and fire-resistant ability make it a great hardy choice for gardens with low maintenance needs. The majestic grass is attractive to both birds and butterflies that visit the garden. Its ornamental character and deep roots help fight soil erosion and absorb excess moisture. The big blue stem is truly a wonderful addition to any garden and an amazing sight to behold.
Sunlight
Partial Shade
Water Needs
medium
USDA Hardiness Zones
Zone 4Zone 5Zone 6Zone 7Zone 8Zone 9
Hardiness Map
Green areas show climates worldwide where this plant can grow.
Zone 4Zone 5Zone 6Zone 7Zone 8Zone 9
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Water Every
"7-10" days
Sun Needs
partial-shade
Growth
High
Care Level
Low
Watering Schedule
Frequency
Day 1"7-10" daysDay NaN
💧 Water every "7-10" days
Seasonal Adjustments
Adjust watering frequency based on temperature, humidity, and season. Water more frequently in summer and less in winter.
Pro Tip: Check soil moisture before watering. Stick your finger 1-2 inches into the soil—if it's dry, it's time to water!
Season
Fall
Sep Oct Nov
Winter
Dec Jan Feb
Spring
Mar Apr May
Summer
Jun Jul Aug
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
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Harvest Fruit
Harvest Fruit
Harvest Fruit
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Pruning Time
Fruiting
How to Propagate
Division
Divide root ball in spring, replant sections immediately
Cutting
Take 4-6" cuttings in spring, root in water or moist soil
Seed Propagation
Start seeds indoors 6-8 weeks before last frost date
Root Suckering
Propagate via Root Suckering for best results
Layering Propagation
Bend stem to soil surface, cover lightly, roots form in 4-6 weeks
Plant Characteristics
Drought Tolerant
Is This Plant Right for You?
Good For:
- •Forgetful waterers
- •Homes with pets
- •Low-maintenance gardens
Consider Carefully:
- •Indoor growing
Bloom Seasons
Care Tips
Light Requirements
Enjoys dappled or limited direct sun—about 2–4 hours of morning or late afternoon light and protection during peak midday sun.
Watering
Keep soil consistently moist but not waterlogged. Water when top inch of soil is dry.