Rough Bluegrass (Poa trivialis)

Rough Bluegrass

Poa trivialis

Soft, fine-bladed turf that spreads steadily. Cool-season grass; common name: Rough Bluegrass.

Partial sun
2–3/week
Beginner
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Plant Needs

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Sunlight Tolerates partial shade and low-light lawn areas; grows best with 4–6 hours of indirect daily sun
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Watering Keep soil consistently moist; tolerates temporary waterlogging better than most cool-season turf grasses
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Temperature Hardy to -15°C; prefers cool, damp conditions; may go dormant during hot, dry summer periods
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Characteristics

  • Leaf: Flat, bright green blades with a boat-shaped tip; finely serrated margins
  • Stem: Slender, creeping stolons that root at nodes to form dense mats
  • Inflorescence: Loose, open panicle with small greenish-white spikelets
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Care Guide

Watering

Keep soil evenly moist to support active growth; avoid drought stress

Fertilization

Apply balanced slow-release fertilizer once. Use low-nitrogen fertilizer to reduce excessive top growth and stolon spread

Banana peel compost tea:Compost banana peels for 2–3 weeks, steep in water for 24 hours, dilute 1:20 for root application; avoid raw peels to prevent pest infestations
Pruning
  • Mow to a height of 2–4 cm to maintain turf density and prevent seed head formation
  • Dethatch annually in early spring to improve soil airflow and reduce matting
  • Trim back overgrown stolons to contain spread into unwanted lawn areas
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats; no reported toxicity

Humans: Non-toxic to humans; no known adverse health effects from ingestion or contact

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Garden Uses & Culture

Culture: N/A

Usage: Turf grass for damp, shaded lawn areas; erosion control for sloped, wet sites