Euphrasia fragosa Plant Care

Euphrasia fragosa W.R.Barker

Updated · Sources · How we source care data

Euphrasia fragosa, the shy eyebright, is a rare lowland perennial herb endemic to lutruwita/Tasmania. It is in the family Orobanchaceae

Water

Every 7–10 days

Light

Partial shade to full sun

Temp

60–75°F

Humidity

40–60%

At a glance

How do you care for Euphrasia fragosa?

Plant Euphrasia fragosa in partial shade to full sun (USDA zones 13a) and water a young shrub every 7–10 days until it is established. It tolerates temperatures of 60–75°F (16–24°C). Fertilize it every 6 months during the growing season.

Where Is the Euphrasia fragosa Native To?

Native range1 country

What Is the Euphrasia fragosa?

Euphrasia fragosa (Euphrasia fragosa) belongs to the Orobanchaceae family within the Euphrasia genus. Euphrasia fragosa is native to lutruwita/Tasmania.

Euphrasia fragosa displays a low rosette, clumping growth habit, reaching up to 0.5 ft tall with a spread of approximately 0.5 ft. Euphrasia fragosa produces small, delicate flowers in shades of purple, white, or yellow.

Leaf size: approximately 2 inches.

How Often Should You Water a Euphrasia fragosa?

Water a young or newly planted Euphrasia fragosa every 7–10 days, soaking the whole root zone, until it is established — usually one to two growing seasons. Established shrubs mainly need water during long dry spells. In a container, water whenever the top few centimetres of soil are dry.

Watering Frequency

Every 7–10 days

Until established; then in dry spells

What Light Does the Euphrasia fragosa Need?

Euphrasia fragosa thrives in partial shade to full sun.

Light Requirement

Partial shade to full sun

What Temperature and Humidity Does the Euphrasia fragosa Prefer?

Euphrasia fragosa tolerates temperatures of 60–75°F. Euphrasia fragosa prefers humidity levels of 40–60%.

Temperature

60–75°F

Humidity

40–60%

What Soil Mix Works Best for a Euphrasia fragosa?

Well-draining sandy loam with added organic matter. Good drainage is essential for Euphrasia fragosa to prevent waterlogging, which leads to root rot and fungal issues.

How Often Should You Fertilize a Euphrasia fragosa?

Feed Euphrasia fragosa every 6 months during the growing season with a balanced, slow-release fertilizer at the rate on the label. Established shrubs in good soil often need little extra feeding, so let weak growth or pale foliage guide you.

Stop feeding by late summer so new growth can harden before winter.

Fertilizing

Every 6 months

During the growing season

The PlantoScan app can remind you when to water and when to fertilize each plant.

Where Should You Plant a Euphrasia fragosa?

Choose a spot with partial shade to full sun and well-draining sandy loam with added organic matter. Avoid low spots where water collects after rain.

Euphrasia fragosa is suited to USDA Zone 13a.

Plant container-grown or balled-and-burlapped shrubs in spring or early autumn, setting the root flare at soil level, and water well after planting.

How Far Apart Should You Plant a Euphrasia fragosa?

Euphrasia fragosa can spread to about 1 ft (0.2 m) and reach about 1 ft (0 m) tall. Space plants about 1 ft (0.2 m) apart so mature crowns don't crowd each other, and plant at least half that distance from buildings, fences and paths.

Planning a row or hedge? Try the plant spacing calculator.

How Do You Prune a Euphrasia fragosa?

Prune Euphrasia fragosa while it is dormant in late winter: first remove dead, damaged and crossing branches, then thin lightly for shape.

If it flowers in spring, prune right after flowering instead so you don't remove next year's buds. Never take off more than about a quarter of the shrub in one year.

How Do You Care for a Euphrasia fragosa in Winter?

Euphrasia fragosa is frost-tender (hardy to USDA zone 13). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.

How Do You Propagate a Euphrasia fragosa?

Euphrasia fragosa can be propagated through seeds, division of clumps. Similar propagation techniques also apply to wood eyebright plant care, which shares the same genus.

Is the Euphrasia fragosa Toxic to Pets and Children?

Pet safety not verified

The ASPCA does not list Euphrasia fragosa, 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 Euphrasia fragosa?

Euphrasia fragosa is susceptible to aphids, spider mites, whiteflies. 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 Euphrasia fragosa Need?

Euphrasia fragosa grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Euphrasia fragosa is native to lutruwita/Tasmania. In cooler regions, grow Euphrasia fragosa as a houseplant or bring it indoors before the first frost.

Hardiness Zone

Zone 13a

Keep exploring plants

Euphrasia fragosa 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 Euphrasia genus — compare its care with other Euphrasia species on PlantoScan.

Euphrasia is part of the Orobanchaceae plant family — browse all Orobanchaceae genera and species.

Euphrasia fragosa thrives in bright light and direct sun — see other bright-light plants.

More Euphrasia Species

Other Euphrasia species in PlantoScan's care catalogue share similar watering, light, and soil preferences:

Sources

  • Scientific name & taxonomy: Euphrasia fragosa W.R.Barker, family Orobanchaceae (first published in J. Adelaide Bot. Gard. 17: 217 (1996)) — World Flora Online record, IPNI name record.
  • Pet toxicity: Pet safety not verified: the ASPCA does not list Euphrasia fragosa, 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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