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Bermuda Blue-eyed Grass Plant Care
Sisyrinchium bermudiana L.
Updated · Sources · How we source care data
This perennial plant is known for its eye-catching bright blue flowers that resemble tiny irises. Originally from Bermuda, Sisyrinchium bermudiana is sought after by plant collectors for its unique color and ability to thrive in rocky, dry conditions.
Every 7–10 days
Full sun to partial shade
50–80°F
40–70%
At a glance
How do you care for Bermuda Blue-eyed Grass?
Water Bermuda Blue-eyed Grass every 7–10 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. Fertilize it every 6 months during the growing season.
What Is the Bermuda Blue-eyed Grass?
Bermuda Blue-eyed Grass (Sisyrinchium bermudiana) belongs to the Iridaceae family within the Sisyrinchium genus. Bermuda Blue-eyed Grass is native to the Atlantic archipelago, and British Overseas Territory, of Bermuda and the island of Ireland. Bermuda Blue-eyed Grass is also known as Blue-eyed Grass.
Bermuda Blue-eyed Grass displays a clumping perennial growth habit, reaching up to 1 ft tall with a spread of approximately 1 ft. Bermuda Blue-eyed Grass produces small, star-shaped flowers in shades of blue, purple, or yellow.
Leaf size: approximately 6 inches.
How Often Should You Water a Bermuda Blue-eyed Grass?
Sisyrinchium bermudiana requires watering every 7–10 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 7–10 days
Let soil partially dry between waterings
What Light Does the Bermuda Blue-eyed Grass Need?
Bermuda Blue-eyed Grass thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Bermuda Blue-eyed Grass Prefer?
Sisyrinchium bermudiana grows best at temperatures of 50–80°F. Bermuda Blue-eyed Grass prefers humidity levels of 40–70%.
Temperature
50–80°F
Humidity
40–70%
What Soil Mix Works Best for a Bermuda Blue-eyed Grass?
Well-draining sandy loam with added organic matter. Good drainage is essential for Bermuda Blue-eyed Grass to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Bermuda Blue-eyed Grass?
Feed Bermuda Blue-eyed 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 Bermuda Blue-eyed 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 Bermuda Blue-eyed Grass?
Bermuda Blue-eyed Grass can be propagated through division of rhizomes, seeds. Similar propagation techniques also apply to greenland blue-eyed grass plant care, which shares the same genus.
Is the Bermuda Blue-eyed Grass Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Bermuda Blue-eyed 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 Bermuda Blue-eyed Grass?
Bermuda Blue-eyed Grass is susceptible to aphids, spider mites, thrips. 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 Bermuda Blue-eyed Grass Need?
Bermuda Blue-eyed Grass grows outdoors in USDA Zone 7b – 11b. It survives winters down to planting zone 7b. Bermuda Blue-eyed Grass is native to the Atlantic archipelago, and British Overseas Territory, of Bermuda and the island of Ireland.
Hardiness Zone
Zone 7b – 11b
Keep exploring plants
Bermuda Blue-eyed 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 Sisyrinchium genus — compare its care with other Sisyrinchium species on PlantoScan.
Sisyrinchium is part of the Iridaceae plant family — browse all Iridaceae genera and species.
Bermuda Blue-eyed Grass thrives in bright light and direct sun — see other bright-light plants.
More Sisyrinchium Species
Other Sisyrinchium species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Sisyrinchium bermudiana L., family Iridaceae (first published in Sp. Pl. 2: 954. 1753 [1 May 1753]) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Bermuda Blue-eyed 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: AI-generated illustration (labelled on the image).
- Hardiness zone: USDA Zone 7b – 11b, 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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