Korean Mountain Grass Plant Care
Deyeuxia brachytricha (Steud.) Chang
Updated · Sources · How we source care data
Calamagrostis arundinacea is a species of bunch grass in the family Poaceae, native to Eurasia, China and India. Under its synonym Calamagrostis brachytricha it has gained the Royal Horticultural Society's Award of Garden Merit.
Every 7–14 days
Full sun to partial shade
50–80°F
40–70%
At a glance
How do you care for Korean Mountain Grass?
Water Korean Mountain 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 50–80°F (10–27°C) and 40–70% humidity.
What Is the Korean Mountain Grass?
Korean Mountain Grass (Deyeuxia brachytricha) belongs to the Poaceae family within the Deyeuxia genus. Korean Mountain Grass is native to Eurasia, China and India. Korean Mountain Grass is also known as Bent Grass.
Korean Mountain Grass displays a clumping grass growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Korean Mountain Grass produces small inconspicuous flowers in spikelets.
Leaf size: approximately 12 inches.
How Often Should You Water a Korean Mountain Grass?
Deyeuxia brachytricha 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 Korean Mountain Grass Need?
Korean Mountain Grass thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Korean Mountain Grass Prefer?
Deyeuxia brachytricha grows best at temperatures of 50–80°F. Korean Mountain Grass prefers humidity levels of 40–70%.
Temperature
50–80°F
Humidity
40–70%
What Soil Mix Works Best for a Korean Mountain Grass?
Well-draining loamy soil with added organic matter. Good drainage is essential for Korean Mountain Grass to prevent waterlogging, which leads to root rot and fungal issues.
How Do You Repot a Korean Mountain Grass?
Divide clumps every 2-3 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 Korean Mountain Grass?
Korean Mountain Grass can be propagated through division, seed sowing.
Is the Korean Mountain Grass Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Korean Mountain 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 Korean Mountain Grass?
Korean Mountain Grass is susceptible to aphids, grasshoppers, cutworms. 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 Korean Mountain Grass Need?
Korean Mountain Grass grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Korean Mountain Grass is native to Eurasia, China and India. In cooler regions, grow Korean Mountain Grass as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Korean Mountain 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 Deyeuxia genus (family Poaceae) — search all Deyeuxia species in the plant lookup.
Korean Mountain 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: Deyeuxia brachytricha (Steud.) Chang, family Poaceae (first published in Clavis Pl. Chinae Bor.-Or. : 492 (1959)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Korean Mountain 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 12a, 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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