Photo: LjažCC BY 4.0via iNaturalistresized / cropped
Purple Moor Grass Plant Care
Molinia caerulea Moench
Updated · Sources · How we source care data
With its long, slender green leaves that turn a beautiful golden yellow in the fall, this plant originates from Europe. Plant collectors are drawn to Molinia caerulea for its striking foliage and graceful shape, making it a standout addition to any garden or landscape.
Every 7–14 days
Full sun to partial shade
60–80°F
40–70%
At a glance
How do you care for Purple Moor Grass?
Water Purple Moor 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 60–80°F (16–27°C) and 40–70% humidity. Fertilize it every 8 months during the growing season.
Where Is the Purple Moor Grass Native To?
- Albania
- Algeria
- Armenia
- Austria
- Azerbaijan
- Bahrain
- Belarus
- Belgium
- Bosnia and Herzegovina
- Bulgaria
- Croatia
- Cyprus
- Czechia
- Denmark
- Egypt
- Estonia
- Finland
- France
- Georgia
- Germany
- Greece
- Hungary
- Iceland
- Iran
- Iraq
- Ireland
- Israel
- Italy
- Jordan
- Kuwait
- Latvia
- Lebanon
- Libya
- Lithuania
- Luxembourg
- Malta
- Moldova
- Montenegro
- Morocco
- North Macedonia
- Norway
- Oman
- Palestine
- Poland
- Portugal
- Qatar
- Romania
- Russia
- Saudi Arabia
- Serbia
- Slovakia
- Slovenia
- Spain
- Sweden
- Switzerland
- Syria
- The Netherlands
- Tunisia
- Türkiye
- UAE
- Ukraine
- United Kingdom
- Yemen
What Is the Purple Moor Grass?
Purple Moor Grass (Molinia caerulea) belongs to the Poaceae family within the Molinia genus. Purple Moor Grass is native to Europe, west Asia, and north Africa. Purple Moor Grass is also known as Blue Moor Grass, Purple Molinia.
Purple Moor Grass displays a clump-forming perennial grass growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Purple Moor Grass produces delicate, airy panicles in late summer to fall.
Leaf size: approximately 12 inches.
How Often Should You Water a Purple Moor Grass?
Molinia caerulea 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 Purple Moor Grass Need?
Purple Moor Grass thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Purple Moor Grass Prefer?
Molinia caerulea grows best at temperatures of 60–80°F. Purple Moor Grass prefers humidity levels of 40–70%.
Temperature
60–80°F
Humidity
40–70%
What Soil Mix Works Best for a Purple Moor Grass?
Well-draining loamy soil with high organic content. Good drainage is essential for Purple Moor Grass to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Purple Moor Grass?
Feed Purple Moor 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 Purple Moor 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 Purple Moor Grass?
Purple Moor Grass can be propagated through division, seed.
Is the Purple Moor Grass Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Purple Moor 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 Purple Moor Grass?
Purple Moor 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 Purple Moor Grass Need?
Purple Moor Grass grows outdoors in USDA Zone 5a – 9b. It survives winters down to planting zone 5a. Purple Moor Grass is native to Europe, west Asia, and north Africa.
Hardiness Zone
Zone 5a – 9b
Keep exploring plants
Purple Moor 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 Molinia genus — compare its care with other Molinia species on PlantoScan.
Molinia is part of the Poaceae plant family — browse all Poaceae genera and species.
Purple Moor 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: Molinia caerulea Moench, family Poaceae (first published in Methodus (Moench) 183. 1794 [4 May 1794]) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Purple Moor 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.
- Photo: Ljaž, CC BY 4.0, iNaturalist — original.
- Hardiness zone: USDA Zone 5a – 9b, estimated from the plant's typical growing conditions.
- 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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