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Hesperostipa spartea

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Hesperostipa spartea

Common Name: Porcupine Grass

Porcupine Grass is a striking native prairie grass that grows 2 to 4 feet tall, known for its long, needle-like awns on its seeds, which aid in self-planting. It is commonly found in dry prairies, open woodlands, and sandy soils. Porcupine Grass gets its name from the long, pokey seed heads that are shed in the fall season. This deep-rooted perennial helps prevent erosion and supports wildlife by providing cover and food for birds and small mammals. It is well-suited for prairie restorations, dry meadows, and erosion control projects.

Characteristics

Type	Graminoid
Sun	Full Sun, Partial Sun
Soil	Clay, Loam, Sand/Gravel, Calcareous
Moisture	Dry, Mesic, Wet
Average Max Height (inches)	32
Suggested Plant Spacing (inches)	24
Dominance	Medium

Range Maps

Sowing Information

For most homeowners, the recommended method is to hand-broadcast seed at a minimum rate of 16–64 PLS (Pure Live Seed) ounces per acre. To ensure even coverage, broadcast the seed in perpendicular passes across the site. Grass seed should be broadcast first and lightly raked into the soil. Afterward, apply a light mulch layer using clean, seed-free straw or, preferably, our native Little Bluestem straw, available at our retail garden centers. Once mulching is complete, broadcast native wildflower seed over the area without raking it in. A good rainfall or thorough watering will provide sufficient soil contact for successful germination.

Planting Information

Dig a hole in your planting site slightly larger than the plant’s root system. When placing the plant into the hole, ensure that the soil line remains consistent with its original level in the pot. Fill in around the roots with the excavated soil, gently firming it to eliminate air pockets. Water the plant thoroughly the same day to promote successful establishment.

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