Lemongrass
Cymbopogon citratus
Family: Poaceae
Lemongrass (Cymbopogon citratus) is a fragrant tropical grass used extensively in Asian cooking. Its citrusy stalks flavor soups, curries, and teas, while the plant itself naturally repels mosquitoes.
Complete Care Guide
Light Requirements
Needs several hours of unfiltered sunlight daily. South-facing windowsill or sunroom is ideal.
Watering
Water when the top 1-2 inches of soil feel dry. Consistent moisture is preferred but brief dry periods are tolerated.
Typical schedule: every 3 days (adjust for season and environment).
Humidity
This plant loves moisture in the air. Keep humidity above 50-60% using a humidifier, pebble tray, or by grouping plants together. Bathrooms with natural light are often ideal.
Temperature
Keep between 55–95°F (13–35°C). Avoid cold drafts, heating vents, and sudden temperature changes.
Size & Growth
Mature size: approximately 48 inches tall × 24 inches wide. Growth rate is fast. Habit: bushy. Will need floor space as it matures.
Difficulty Level: 2/5
Easy to moderate care. Forgiving of minor mistakes but benefits from consistent attention. Good for beginners ready for a small step up.
Quick Tips
- ✓Full sun and warm temperatures required
- ✓Keep soil consistently moist
- ✓Harvest outer stalks when 12+ inches tall
- ✓Bring indoors before frost in cold climates
- ✓Feed monthly during growing season
Common Problems & Solutions
Brown leaf tips
Cause: Low humidity, inconsistent watering, or mineral buildup from tap water
Fix: Increase humidity with a pebble tray or humidifier. Use filtered water. Water on a consistent schedule.
Pale or leggy growth
Cause: Insufficient light — plant is stretching toward the nearest light source
Fix: Move to a brighter location. Rotate plant quarterly for even growth.
Drooping or wilting
Cause: Usually underwatering or sudden temperature change
Fix: Water thoroughly and ensure consistent moisture. Avoid cold drafts and heating vents.
Crispy leaf edges
Cause: Humidity too low for this tropical plant
Fix: Group plants together, use a humidifier, or place on a pebble tray. Bathrooms often provide ideal humidity.
Toxic to Pets
Lemongrass is toxic to cats and dogs. Ingestion may cause oral irritation, excessive drooling, vomiting, and difficulty swallowing. Keep this plant out of reach or consider a pet-safe alternative.
Browse pet-safe alternatives →Best For
Frequently Asked Questions
Is Lemongrass safe for cats and dogs?▼
No — Lemongrass is toxic to both cats and dogs. If ingested, it may cause oral irritation, drooling, vomiting, or difficulty swallowing. Keep out of reach of pets or choose a pet-safe alternative.
How often should I water Lemongrass?▼
Water approximately every 3 days, but always check the soil first. Water when the top 1-2 inches of soil feel dry. Consistent moisture is preferred but brief dry periods are tolerated. Adjust frequency based on season — less in winter, more in summer.
How much light does Lemongrass need?▼
Lemongrass prefers direct sun conditions. Needs several hours of unfiltered sunlight daily. South-facing windowsill or sunroom is ideal.
How big does Lemongrass get?▼
Indoors, Lemongrass typically reaches about 48 inches (122 cm) tall with a spread of around 24 inches. Growth rate is fast. Size depends on pot size, light, and care.
Is Lemongrass good for beginners?▼
Yes! With a difficulty rating of 2/5, Lemongrass is very forgiving and suitable for beginners. It tolerates imperfect conditions and bounces back from mistakes.
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