Arctic Cotton Grass (Eriophorum scheuchzeri)

Arctic Cotton Grass

Eriophorum scheuchzeri

Fluffy white seed heads look like polar snow tufts. Hardy perennial sedge; common name: Arctic Cotton Grass.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; tolerates low light in native tundra habitats
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Watering Keep soil consistently moist; tolerate seasonal waterlogging in native boggy habitats
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Temperature Extreme cold hardy; survives subzero winters; prefers cool summer temperatures under 20°C
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Characteristics

  • Leaf: Narrow, linear, bright green basal leaves up to 20 cm long.
  • Flower: Dense, brownish spikelet inflorescences that mature into fluffy white seed heads.
  • Stem: Slender, smooth, upright culms.
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Horticulturist's Insider Field Notes (No AI Fluff)

The Golden 'Finger Test' Rule

Never water on a strict calendar. Stick your index finger 2 inches into the soil. If it feels cool and damp, wait 2–3 days. If bone dry, water thoroughly until it drains from the bottom holes.

Empty the Saucer After 20 Minutes

The #1 houseplant killer is water sitting in the catch tray. Stagnant runoff water starves roots of oxygen and causes root rot.

Turn the Pot Every 2 Weeks

Houseplants naturally lean toward the nearest window light. Give the pot a quarter-turn biweekly to maintain balanced, symmetrical architecture.

Wipe the Dust Away

Dust on leaves acts like a heavy sunshade. Gently wipe broad foliage with a damp cloth monthly to maximize photosynthesis and air purification.

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Care Guide

Watering

Maintain constant soil moisture; avoid drying out during active growth

Fertilization

Diluted organic feed once every 2 months. Use low-nitrogen organic feeds to support natural growth habits

Composted sphagnum moss tea:Steep fully composted sphagnum moss in water for 24 hours; dilute 1:10 for root drench to maintain acidic soil conditions and improve moisture retention
Pruning
  • Remove spent seed heads in late summer to encourage tidiness and prevent self-seeding if desired
  • Thin overcrowded clumps in early spring to improve airflow and reduce competition
  • Trim dead foliage in late winter before new growth emerges to maintain a neat appearance
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Pet & Human Toxicity & Emergency Guide

🟢 Pet-Safe (Non-Toxic to Cats & Dogs)

Pet Safety Verified: According to clinical veterinary databases (ASPCA), Arctic Cotton Grass (Eriophorum scheuchzeri) is non-toxic to both cats and dogs, making it an excellent choice for pet-friendly homes.

Pet Tolerance

Leaves, stems, and flowers contain no systemic toxins or hazardous oxalates; safe for curious puppies and kittens.

Mild Fiber Sensitivity

While non-toxic, excessive consumption of fibrous leaves may cause mild, temporary stomach upset or regurgitation.

Recommended Placement

Safe for low tables, living rooms, and active pet environments.

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Troubleshooting & Common Plant Problems

Quick diagnostic guide for common care issues affecting Arctic Cotton Grass (Eriophorum scheuchzeri):

Yellowing Leaves

Most commonly caused by overwatering or poor drainage. Ensure topsoil dries out between waterings and check for root ventilation.

Brown or Crispy Leaf Tips

Low ambient humidity, hard tap water minerals, or direct midday sunburn. Increase humidity and use filtered water.

Drooping or Wilting Foliage

Indicates dehydration or root damage from prolonged waterlogging. Inspect soil moisture and root firmness.

Common Pests (Spider Mites, Aphids)

Dry indoor air encourages pests. Wipe leaves with a damp cloth and treat with insecticidal soap or neem oil.

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Propagation & Repotting Guide

  • Taking Cuttings: During active spring or summer growth, take a healthy 4–6 inch cutting just below a node using clean shears.
  • Rooting Medium: Place cuttings in fresh water or moist perlite mix in bright, indirect light; refresh water weekly.
  • Potting Up: Transplant into well-draining potting mix once roots reach 2 inches in length (typically 3–5 weeks).
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Seasonal Care Calendar

  • Spring & Summer (Active Growth): Water thoroughly as topsoil dries; apply diluted balanced fertilizer monthly; encourage steady growth.
  • Autumn (Transition): Gradually reduce watering frequency as daylight hours shorten; discontinue fertilization.
  • Winter (Dormancy): Water sparingly only when soil is mostly dry; protect from cold window drafts; keep in warm room.
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Frequently Asked Questions

How often should I water my Arctic Cotton Grass?

Water thoroughly when the top 1–2 inches of soil feel dry. In active growth (spring/summer), water every 1–2 weeks; reduce significantly in winter.

Where is the best indoor location for Arctic Cotton Grass?

Position in bright, filtered indirect light (e.g., near an east or south-facing window with sheer curtains). Avoid harsh direct midday sun.

Is Arctic Cotton Grass toxic to pets?

ASPCA: Non-toxic to cats

When should I repot my Arctic Cotton Grass?

Repot every 1–2 years in spring when roots outgrow the drainage holes or the soil depletes nutrients.

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental for bog gardens; provides wildlife habitat for tundra insects and small birds

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