Mondo grass
ophiopogon japonicus
Also known as: ["Dwarf lilyturf","Nippon lilyturf"]
Overview
A low-growing, evergreen perennial with grass-like leaves and small, bell-shaped flowers followed by blue-black berries.
Benefits & Perks
["low maintenance","shade tolerant","drought tolerant","aesthetic foliage"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Liliopsida |
| Order: | Asparagales |
| Family: | Asparagaceae |
| Genus: | Ophiopogon |
| Botanical Name: | Ophiopogon japonicus |
Plant Characteristics
Basic Information
- Category: Leaf Plants
- Suitable Location: indoor pot or shaded garden bed
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"10–30°C"}
- Hardiness: {"zones":"8–11"}
- Misting: rarely required, only if ambient humidity is very low
- Drainage: Fast-draining to prevent waterlogging.
- Soil Type: Well-draining, loamy soil with some organic matter. A cactus or succulent mix amended with compost works well.
Maintenance Level
- Maintenance Level: very low
- Toughness Level: high
- Pruning Frequency: As needed, typically every few months or when dead leaves are noticeable.
- Pruning Intensity: Light pruning only; remove individual leaves or small sections as needed.
Care Details
Ideal Sunlight Coverage:
Bright indirect light for 4–6 hours daily. Can tolerate partial shade; adjust exposure based on intensity and season.
Sunlight Tolerance Tips:
Acclimate gradually to brighter light to prevent leaf burn. Protect from intense midday sun, especially in summer. Indoors, place near an east or north window.
Care Requirements
Care Difficulty
easyeasy
Sunlight
partial shade to full shade
Rotate plant weekly for even growth; use sheer curtains to filter direct sun; avoid placing near hot windows in summer.
Watering
every 7–10 days, allowing soil to dry slightly between waterings
Keep soil consistently moist but not waterlogged; avoid letting it dry out completely; ensure good drainage.
Soil
well-draining, loamy soil with some organic matter
pH: Slightly acidic to neutral, pH 6.0–7.0.
Use a pot with drainage holes; avoid heavy clay soils; check moisture before watering; amend soil if it becomes compacted.
Temperature
Prefers moderate temperatures, 60–75°F (15–24°C). Tolerates cooler conditions but avoid prolonged exposure below 50°F (10°C).
Avoid placing near drafty windows or heating vents; maintain stable temperatures; protect from sudden temperature swings.
Fertilizing
every 4–6 weeks during growing season (spring to summer)
Apply fertilizer after watering to prevent root burn; flush soil occasionally to prevent salt buildup; use a slow-release fertilizer for convenience.
Propagation
Methods
Division of clumps or root cuttings. Division is the most reliable method for home growers.
Step-by-Step Propagation Guide
- Divide clumps into smaller sections with roots attached.
- Plant each section in its own pot.
- Water thoroughly.
- Place in indirect light.
Best Time: Spring or early summer when the plant is actively growing.
Environment
Warm, humid environment with indirect light. Keep soil consistently moist but not waterlogged.
Medium
Standard potting mix with added perlite for drainage.
Hormone
Not typically required for division, but can be used for root cuttings to encourage faster rooting.
Timeline
Division: immediate establishment; root cuttings: roots in 4–6 weeks, mature plant in 3–6 months.
Tools Needed
Sharp, sterile knife or shears, small pots, potting mix, water.
Quick Tips
Divide only healthy, established clumps; ensure each division has roots and foliage; water well after planting.
Pruning & Repotting
Pruning Guide
Method
Snip individual leaves at the base with clean, sharp scissors or pruners.
Pruning Plan
Minimal pruning needed. Remove dead or damaged leaves to maintain appearance and encourage new growth.
Tools
Clean, sharp scissors or small pruning shears.
Checklist
Check for dead or yellowing leaves; use clean tools; prune carefully to avoid damaging healthy foliage; dispose of clippings.
Repotting Guide
Best Season
Spring, before the active growing season begins.
Pot Size
Choose a pot one size larger than the current one, with a diameter about 1–2 inches wider.
Method
Remove the plant gently; trim any dead roots; place in a new pot with fresh soil; water thoroughly after repotting.
Suggestions
Repot every 2–3 years or when the plant becomes root-bound. This helps refresh the soil and provides space for growth.
Checklist
Select appropriate pot size; prepare fresh soil mix; gently remove plant; inspect roots; trim if necessary; repot carefully; water well.
Advanced Care Tips
Watering Mastery
Watering Checklist
Check soil moisture daily; water when top inch is dry; ensure proper drainage; adjust frequency with seasons.
How to Apply Water Properly
Water thoroughly until it drains from the bottom, ensuring even moisture distribution. Water early in the day to allow foliage to dry. Focus on the root zone, avoiding wetting the leaves excessively.
Watering Schedule Tips
Water consistently, allowing the top inch of soil to dry out between waterings. Increase frequency during hot, dry periods; reduce in winter to prevent root rot.
Soil Improvement
Add perlite or coarse sand to improve drainage; incorporate compost for fertility; ensure soil is loose and airy.
Temperature Stress Management
Signs of Temperature Issues
Yellowing or browning leaf tips; stunted growth; wilting despite adequate water; leaf drop.
Cold Stress
Slows growth; may cause leaf discoloration or dieback in prolonged cold. Roots are sensitive to freezing.
Solution: Move to a warmer location; provide frost protection in winter; ensure pots are frost-proof if outdoors.
Hot Stress
Leaves may scorch or turn yellow; growth may slow; soil may dry out too quickly.
Solution: Provide shade during peak heat; increase watering frequency; ensure good air circulation.
Fertilizing Guide
Fertilizing Checklist
Check fertilizer label for NPK ratio; dilute correctly; fertilize during active growth; stop in winter.
Fertilizing Method
Use a balanced liquid fertilizer diluted to half strength every 4–6 weeks during the growing season (spring to early fall). Avoid fertilizing in winter.
Common Problems & Solutions
Toxicity Warning
Cats
Slightly ToxicCats may experience mild gastrointestinal irritation if they consume parts of Ophiopogon japonicus. The saponins in the plant can cause mild digestive upset.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Dogs
Slightly ToxicIn dogs, ingestion of Ophiopogon japonicus can lead to mild gastrointestinal upset due to the presence of saponins. The effects are typically not severe but can cause discomfort.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Humans
Slightly ToxicOphiopogon japonicus contains saponins which can cause mild gastrointestinal distress when ingested in significant quantities. The physiological impact is generally limited to irritation of the digestive tract.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Frequently Asked Questions
Q: Is Mondo grass a true grass?
A: No, it is a member of the lily family, despite its grass-like appearance.
Q: How fast does Mondo grass grow?
A: It grows slowly, spreading by underground rhizomes to form dense clumps over time.
Q: Can Mondo grass be grown indoors?
A: While possible, it prefers outdoor conditions and may struggle indoors unless provided with bright, indirect light and proper humidity.
Quick Reference
| Family: | Asparagaceae |
| Care: | easy |
| Light: | partial shade to full shade |
| Water: | every 7–10 days, allowing so |
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