Scented Oil Grass Plant Care
Cymbopogon ambiguus A.Camus
Updated · Sources · How we source care data
Cymbopogon ambiguus, or Australian lemon-scented grass, is a plant species in the family Poaceae. It has fragrant, bluish-green grey leaves and fluffy seed heads.
Every 7–14 days
Full sun to partial shade
60–85°F
40–70%
At a glance
How do you care for Scented Oil Grass?
Water Scented Oil Grass every 7–14 days, letting the top layer of soil dry out between waterings, and give it full sun to partial shade. It prefers temperatures of 60–85°F (16–29°C) and 40–70% humidity. Fertilize it every 6 months during the growing season.
What Is the Scented Oil Grass?
Scented Oil Grass (Cymbopogon ambiguus) belongs to the Poaceae family within the Cymbopogon genus.
Scented Oil Grass displays a grassy clumping habit growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Scented Oil Grass produces small, inconspicuous flowers in clusters.
Leaf size: approximately 12 inches.
How Often Should You Water a Scented Oil Grass?
Cymbopogon ambiguus 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 Scented Oil Grass Need?
Scented Oil Grass thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Scented Oil Grass Prefer?
Cymbopogon ambiguus grows best at temperatures of 60–85°F. Scented Oil Grass prefers humidity levels of 40–70%.
Temperature
60–85°F
Humidity
40–70%
What Soil Mix Works Best for a Scented Oil Grass?
Well-draining sandy soil with added compost for nutrients. Good drainage is essential for Scented Oil Grass to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Scented Oil Grass?
Feed Scented Oil Grass every 6 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 6 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 Scented Oil Grass?
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 Scented Oil Grass?
Scented Oil Grass can be propagated through division, seeds. Similar propagation techniques also apply to lemongrass plant care, which shares the same genus.
Is the Scented Oil Grass Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Scented Oil 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 Scented Oil Grass?
Scented Oil Grass is susceptible to aphids, grasshoppers, spider mites. 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 Scented Oil Grass Need?
Scented Oil Grass grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. In cooler regions, grow Scented Oil Grass as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13a
Keep exploring plants
Scented Oil 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 Cymbopogon genus — compare its care with other Cymbopogon species on PlantoScan.
Cymbopogon is part of the Poaceae plant family — browse all Poaceae genera and species.
Scented Oil Grass thrives in bright light and direct sun — see other bright-light plants.
More Cymbopogon Species
Other Cymbopogon species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Cymbopogon ambiguus A.Camus, family Poaceae (first published in Rev. Bot. Appl. Agric. Colon. 1: 290 (1921)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Scented Oil 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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