Richardson's Muhly Plant Care
Muhlenbergia richardsonis Rydb.
Updated · Sources · How we source care data
Muhlenbergia richardsonis, known by the common name mat muhly, is a species of grass. It is native to North America, where it can be found throughout much of Canada, Alaska, the western half of the contiguous United States through California, and in Baja California, Mexico.
Every 7–14 days
Full sun to partial shade
60–85°F
40–70%
At a glance
How do you care for Richardson's Muhly?
Water Richardson's Muhly 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.
Where Is the Richardson's Muhly Native To?
What Is the Richardson's Muhly?
Richardson's Muhly (Muhlenbergia richardsonis) belongs to the Poaceae family within the Muhlenbergia genus. Richardson's Muhly is native to North America. Richardson's Muhly is also known as Mat Muhly.
Richardson's Muhly displays an upright, clumping grass growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Richardson's Muhly produces small, inconspicuous flowers in spikelets.
Leaf size: approximately 12 inches.
How Often Should You Water a Richardson's Muhly?
Muhlenbergia richardsonis 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 Richardson's Muhly Need?
Richardson's Muhly thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Richardson's Muhly Prefer?
Muhlenbergia richardsonis grows best at temperatures of 60–85°F. Richardson's Muhly prefers humidity levels of 40–70%.
Temperature
60–85°F
Humidity
40–70%
What Soil Mix Works Best for a Richardson's Muhly?
Well-draining sandy soil with good aeration. Good drainage is essential for Richardson's Muhly to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Richardson's Muhly?
Feed Richardson's Muhly 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 Richardson's Muhly?
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 Richardson's Muhly?
Richardson's Muhly 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 Richardson's Muhly Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Richardson's Muhly, 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 Richardson's Muhly?
Richardson's Muhly 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 Richardson's Muhly Need?
Richardson's Muhly grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Richardson's Muhly is native to North America. In cooler regions, grow Richardson's Muhly as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13a
Keep exploring plants
Richardson's Muhly 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.
Richardson's Muhly 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 richardsonis Rydb., family Poaceae (first published in Bull. Torrey Bot. Club 32: 600 (1905)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Richardson's Muhly, 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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