Southern Cutgrass Plant Care
Leersia hexandra Sw.
Updated · Sources · How we source care data
Leersia hexandra is a species of grass known by the common names southern cutgrass, clubhead cutgrass, and swamp rice grass. It has a pantropical distribution.
Every 3–5 days
Partial to full shade
60–75°F
50–70%
At a glance
How do you care for Southern Cutgrass?
Water Southern Cutgrass every 3–5 days, letting the top layer of soil dry out between waterings, and give it partial to full shade. It prefers temperatures of 60–75°F (16–24°C) and 50–70% humidity.
What Is the Southern Cutgrass?
Southern Cutgrass (Leersia hexandra) belongs to the Poaceae family within the Leersia genus. Southern Cutgrass is also known as Rice Grass.
Southern Cutgrass displays a low rosette, spreading growth habit, reaching up to 0.5 ft tall with a spread of approximately 1 ft. Southern Cutgrass produces small inconspicuous flowers.
Leaf size: approximately 4 inches.
How Often Should You Water a Southern Cutgrass?
Leersia hexandra requires watering every 3–5 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 3–5 days
Let soil partially dry between waterings
What Light Does the Southern Cutgrass Need?
Southern Cutgrass thrives in partial to full shade. The optimal light range is 50–200 lux. Avoid placing Southern Cutgrass in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Partial to full shade
50–200 lux
What Temperature and Humidity Does the Southern Cutgrass Prefer?
Leersia hexandra grows best at temperatures of 60–75°F. Southern Cutgrass prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.
Temperature
60–75°F
Humidity
50–70%
What Soil Mix Works Best for a Southern Cutgrass?
Moist, fertile soil with good drainage. Good drainage is essential for Southern Cutgrass to prevent waterlogging, which leads to root rot and fungal issues.
How Do You Repot a Southern Cutgrass?
Repot every 1-2 years in early spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Southern Cutgrass?
Southern Cutgrass can be propagated through division, spores. Similar propagation techniques also apply to rice cutgrass plant care, which shares the same genus.
Is the Southern Cutgrass Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Southern Cutgrass, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Southern Cutgrass?
Southern Cutgrass is susceptible to slugs, snails, aphids. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the Southern Cutgrass Need?
Southern Cutgrass grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. In cooler regions, grow Southern Cutgrass as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13a
Keep exploring plants
Southern Cutgrass is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Leersia genus — compare its care with other Leersia species on PlantoScan.
Leersia is part of the Poaceae plant family — browse all Poaceae genera and species.
Southern Cutgrass copes with lower light than most plants — browse the full list of low-light plants.
Related Plant Care Guides
Closely related plants with similar care requirements:
Sources
- Scientific name & taxonomy: Leersia hexandra Sw., family Poaceae (first published in Prodr. Veg. Ind. Occ. : 21 (1788)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Southern Cutgrass, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Hardiness zone: USDA Zone 13a, calculated from the plant's minimum temperature.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
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