Grassy Windmill Grass Plant Care
Themeda quadrivalvis (L.) Kuntze
Updated · Sources · How we source care data
Themeda quadrivalvis is a species of grass known by the common names grader grass, habana grass, and kangaroo grass, not to be confused with Themeda triandra, which is also known as kangaroo grass. It is native to India, Nepal, and Malaysia.
Every 7–14 days
Full sun
60–85°F
40–70%
At a glance
How do you care for Grassy Windmill Grass?
Water Grassy Windmill Grass every 7–14 days, letting the top layer of soil dry out between waterings, and give it full sun. It prefers temperatures of 60–85°F (16–29°C) and 40–70% humidity. Fertilize it every 8 months during the growing season.
What Is the Grassy Windmill Grass?
Grassy Windmill Grass (Themeda quadrivalvis) belongs to the Poaceae family within the Themeda genus. Grassy Windmill Grass is native to India, Nepal, and Malaysia. Grassy Windmill Grass is also known as Kangaroo Grass.
Grassy Windmill Grass displays a tall, clumping grass growth habit, reaching up to 6 ft tall with a spread of approximately 3 ft. Grassy Windmill Grass produces tall, feathery flower spikes.
Leaf size: approximately 12 inches.
How Often Should You Water a Grassy Windmill Grass?
Themeda quadrivalvis requires watering every 7–14 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 7–14 days
Let soil partially dry between waterings
What Light Does the Grassy Windmill Grass Need?
Grassy Windmill Grass thrives in full sun.
Light Requirement
Full sun
What Temperature and Humidity Does the Grassy Windmill Grass Prefer?
Themeda quadrivalvis grows best at temperatures of 60–85°F. Grassy Windmill Grass prefers humidity levels of 40–70%.
Temperature
60–85°F
Humidity
40–70%
What Soil Mix Works Best for a Grassy Windmill Grass?
Well-draining sandy soil with good aeration. Good drainage is essential for Grassy Windmill Grass to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Grassy Windmill Grass?
Feed Grassy Windmill Grass every 8 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every 8 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Grassy Windmill Grass?
Divide clumps every 2-3 years. 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 Grassy Windmill Grass?
Grassy Windmill Grass can be propagated through seeds. Similar propagation techniques also apply to kangaroo grass plant care, which shares the same genus.
Is the Grassy Windmill Grass Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Grassy Windmill Grass, 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 Grassy Windmill Grass?
Grassy Windmill Grass is susceptible to no common pests known. 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 Grassy Windmill Grass Need?
Grassy Windmill Grass grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Grassy Windmill Grass is native to India, Nepal, and Malaysia. In cooler regions, grow Grassy Windmill Grass as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13a
Keep exploring plants
Grassy Windmill Grass 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 Themeda genus — compare its care with other Themeda species on PlantoScan.
Themeda is part of the Poaceae plant family — browse all Poaceae genera and species.
Grassy Windmill Grass thrives in bright light and direct sun — see other bright-light plants.
Related Plant Care Guides
Closely related plants with similar care requirements:
Sources
- Scientific name & taxonomy: Themeda quadrivalvis (L.) Kuntze, family Poaceae (first published in Revis. Gen. Pl. 2: 793 (1891)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Grassy Windmill Grass, 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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