Pale Yellow-eyed Grass (Sisyrinchium striatum)

Pale Yellow-eyed Grass

Sisyrinchium striatum

Spiky, grass-like foliage carries cheerful pale yellow blooms. Clumping herbaceous perennial; common name: Pale Yellow-eyed Grass.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; tolerates hot afternoon sun in cool temperate regions, provide afternoon shade in hot arid areas
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Watering Water deeply when the top 2–3 cm of soil is dry; avoid standing water to prevent root rot
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Temperature Hardy to -10°C; thrives in cool to temperate conditions, tolerates mild summer heat up to 30°C
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Characteristics

  • Leaf: Narrow, sword-shaped, grass-like leaves in dense clumps, blue-green to gray-green.
  • Flower: Star-shaped pale yellow blooms with brownish petal stripes, borne on upright rigid stems.
  • Stem: Slender, upright flowering stems rising 10–20 cm above foliage clumps.
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Care Guide

Watering

Keep soil evenly moist during active growth periods

Fertilization

Diluted balanced liquid feed once monthly. Use a low-nitrogen fertilizer to prioritize bloom production over foliage growth

Eggshell powder top-dress:Sprinkle a thin layer of crushed, dried eggshells around the base of clumps; water thoroughly to release calcium into the soil
Pruning
  • Remove spent flower stems after blooming to encourage potential reblooming and tidy clumps
  • Trim back dead foliage to ground level in late winter before new growth emerges
  • Divide overcrowded clumps every 2–3 years in early spring to maintain plant vigor
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA confirms no toxicity to cats

Humans: No known toxicity to humans

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental groundcover, border edge plant, rock garden specimen, and cut flower filler