How to Grow Bluestem
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Bluestem
Andropogon gerardii
grassBluestem, also called Big Bluestem, is a native warm-season perennial grass that can reach 4-8 feet tall and is a dominant species in North American tallgrass prairies. It features distinctive three-pronged seed heads that resemble a turkey foot and develops striking blue-purple coloration at the stem base during fall and winter. This deep-rooted grass is highly valued for prairie restoration, erosion control, and wildlife habitat.
When should you plant Bluestem in your zone?
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Example Bluestem timeline · Pittsburgh, PA (Zone 6b)
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Plant Bluestem
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Bluestem
Late summer into fallBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact Bluestem dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-9, especially zones 4-8
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Germination & Seedling
3-4 weeksSeeds germinate in spring when soil temps reach 60°F+. Seedlings are thin and grass-like, appearing 1-3 inches tall.
Keep soil consistently moist (not waterlogged) for 4-6 weeks. Mulch lightly to retain moisture. Protect from foot traffic.
Establishment Year
5-6 monthsPlants develop extensive root systems while above-ground growth remains modest, typically 12-24 inches tall in first year.
Water deeply but infrequently to encourage deep rooting. Avoid high nitrogen fertilizer. Remove competing weeds. Do not harvest.
Vegetative Growth
Spring-summer, months 4-8In years 2-3, plants develop fuller clumps and taller stems. Fine-textured green foliage expands significantly.
Begin light harvesting or mowing if desired. Continue regular weeding if in garden setting. Plants become more competitive.
Flowering & Seed Head Development
August-NovemberDistinctive three-pronged 'turkey foot' seed heads emerge in late summer/fall. Stems develop blue-purple color at bases in cool weather.
Do not mow or harvest during seed development to allow seed maturation. Allow seed heads to persist through winter for wildlife food.
Winter Dormancy
December-MarchFoliage turns tan/bronze and persists through winter. Plant is dormant but seed heads remain attractive and functional.
Leave standing to provide wildlife habitat and winter structure. Burn or cut back in early spring before new growth (optional; promotes vigor).
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Rarely problematic in native prairie settings. Monitor for damage. Encourage natural predators. Chemical control usually unnecessary.
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Rarely cause significant damage to established plants. Remove affected plants if severe. Encourage birds and natural parasitoids.
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Normally not damaging to established plants. Leave standing for wildlife predators. Remove if outbreak occurs in nursery setting.
Uses
Prairie Habitat & Food Source
WildlifeBluestem is foundational for native prairie restoration and provides essential habitat for grassland birds, pollinators, and beneficial insects. Seed heads provide critical fall and winter food for wildlife. [source]
Erosion Control & Slope Stabilization
HouseholdThe extensive deep root system (reaching 12+ feet) binds soil effectively and prevents erosion on slopes, streambanks, and disturbed areas. Often used in bioengineering and land restoration projects. [source]
Ornamental & Landscape Design
CraftValued for naturalistic landscapes, rain gardens, and pollinator gardens. Striking fall colors and persistent seed heads provide 3-4 seasons of visual interest. [source]
Biomass & Biofuel
HouseholdBluestem is researched and used as a sustainable source for biofuel and biomass energy production, requiring minimal inputs and providing carbon sequestration. [source]
Livestock Forage
CulinaryHistorically and currently used as high-quality grazing and hay forage for cattle and other livestock, particularly valued for nutritional content and palatability. [source]
Harvest Tips
Bluestem is typically not harvested like a food crop. For ornamental/habitat use: allow seed heads to mature fully (September-October) before cutting or burning. Seeds can be collected by stripping dried seed heads into a bag. For biomass/hay: cut in late fall after dormancy or early spring before growth begins.
Fun Facts
- 🌱 The common name 'turkey foot' refers to the three-pronged seed head resembling a wild turkey's footprint—this distinctive feature makes identification unmistakable.
- 🌱 Big Bluestem can develop root systems extending 12-15 feet deep, among the deepest of any North American grass, allowing it to access water and nutrients far below the soil surface.
- 🌱 A single mature bluestem plant can produce over 10,000 seeds annually, making it a prolific reproducer in prairie ecosystems.
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