Fiber Optic Grass
Isolepis cernua (syn. Scirpus cernuus)
Grasses & Groundcovers Difficulty: Easy
📖 About this plant
A charming, diminutive ornamental grass named for its resemblance to fiber optic cables — tiny, silvery-white flower tufts sit at the tips of slender, hair-like, bright green stems that cascade outward. Its unique texture and playful form make it a popular choice for containers, hanging baskets, terrariums, and water garden edges.
🧑🌾 Care requirements
☀️
Light
Partial shade to full sun (4-6 hrs)
💧
Water
Every 2-3 days
💨
Humidity
Moderate to high (50-70%)
🌡️
Temperature
10-25°C
🪴
Soil
Moist to wet, well-draining, peat-based potting mix; tolerates boggy conditions; not drought-tolerant
🧪
Fertilizer
Diluted balanced liquid fertilizer every 2-3 weeks during the growing season
📋 Plant facts
- 🌍 Origin
- Widespread in tropical, subtropical, and temperate wetlands worldwide — Americas, Africa, and Australasia
- 📏 Max height
- 15-30 cm
- 📐 Spread
- 15-30 cm
- 🕰️ Bloom time
- Summer
- 🎨 Bloom color
- Brown
- 🍃 Foliage color
- Green
- ⏳ Lifespan
- Perennial
- 📈 Growth rate
- Moderate
- ☠️ Toxicity
- Non-toxic to humans and pets
- 🌱 Propagation
- Division of clumps in spring; seed sowing on moist surface; stem cuttings in water
🛡️ Health & Safety
🐾 Pet safe
✅ Non-toxic
Non-toxic to humans and pets
Common issues
- Root rot from overwatering, Brown tips from dry conditions, Spider mites, Crown rot
💡 Care tips
- Tiny flower heads at the tips of thin blades resemble fiber optic lights,Excellent for containers and water features as it tolerates wet feet,Low-growing and compact perfect for edging and fairy gardens,Non-toxic and safe for households with curious pets
🪴 Add to My Plants
One click — added instantly. Watering every 3 days, fertilizing every 18 days.
