Mexican Hair Grass Plant Care
Muhlenbergia macroura Hitchc.
Updated · Sources · How we source care data
Muhlenbergia macroura is a species of grass. It is a perennial grass that is endemic to Mexico and Guatemala.
Every 7–14 days
Full sun to partial shade
60–85°F
40–70%
At a glance
How do you care for Mexican Hair Grass?
Water Mexican Hair 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 8 months during the growing season.
What Is the Mexican Hair Grass?
Mexican Hair Grass (Muhlenbergia macroura) belongs to the Poaceae family within the Muhlenbergia genus. Mexican Hair Grass is native to Mexico and Guatemala. Mexican Hair Grass is also known as Deer Grass.
Mexican Hair Grass displays an upright, clumping grass growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Mexican Hair Grass produces small, inconspicuous flowers in spikelets.
Leaf size: approximately 12 inches.
How Often Should You Water a Mexican Hair Grass?
Muhlenbergia macroura 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 Mexican Hair Grass Need?
Mexican Hair Grass thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Mexican Hair Grass Prefer?
Muhlenbergia macroura grows best at temperatures of 60–85°F. Mexican Hair Grass prefers humidity levels of 40–70%.
Temperature
60–85°F
Humidity
40–70%
What Soil Mix Works Best for a Mexican Hair Grass?
Well-draining sandy soil with good aeration. Good drainage is essential for Mexican Hair Grass to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Mexican Hair Grass?
Feed Mexican Hair 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 Mexican Hair Grass?
Divide and repot 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 Mexican Hair Grass?
Mexican Hair Grass can be propagated through seeds, division of clumps. Similar propagation techniques also apply to pink muhly grass plant care, which shares the same genus.
Is the Mexican Hair Grass Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Mexican Hair 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 Mexican Hair Grass?
Mexican Hair Grass is susceptible to grasshoppers, aphids, 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 Mexican Hair Grass Need?
Mexican Hair Grass grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Mexican Hair Grass is native to Mexico and Guatemala. In cooler regions, grow Mexican Hair Grass as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13a
Keep exploring plants
Mexican Hair 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 Muhlenbergia genus — compare its care with other Muhlenbergia species on PlantoScan.
Muhlenbergia is part of the Poaceae plant family — browse all Poaceae genera and species.
Mexican Hair Grass thrives in bright light and direct sun — see other bright-light plants.
More Muhlenbergia Species
Other Muhlenbergia species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Muhlenbergia macroura Hitchc., family Poaceae (first published in N. Amer. Fl. 17: 468 (1935)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Mexican Hair 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.
Identify Plants Like the
Mexican Hair Grass Instantly
Scan any plant with your phone camera and get instant ID, care tips, water and fertilizer reminders, and health checks — all in one app.
Free
to download
iOS & Android
platforms
Light & dark
mode
100,000+
species