Large-headed Gnephosis Plant Care

Gnephosis macrocephala Turcz.

Updated · Sources · How we source care data

Gnephosis macrocephala is a species of flowering plant in the family Asteraceae and is endemic to the south-west of Western Australia. It is an erect annual herb with linear or lance-shaped leaves, compound heads of yellow flowers, and cone-shaped cypselas.

🌱Herbs🌼Perennials🌻Annuals
Water

Every 7–10 days

Light

Full sun to partial shade

Temp

60–80°F

Humidity

40–70%

At a glance

How do you care for Large-headed Gnephosis?

Plant Large-headed Gnephosis in full sun to partial shade (USDA zones 13a) and water a young shrub every 7–10 days until it is established. It tolerates temperatures of 60–80°F (16–27°C). Fertilize it every 6 months during the growing season.

Where Is the Large-headed Gnephosis Native To?

Native range1 country

What Is the Large-headed Gnephosis?

Large-headed Gnephosis (Gnephosis macrocephala) belongs to the Asteraceae family within the Gnephosis genus. Large-headed Gnephosis is native to the south-west of Western Australia.

Large-headed Gnephosis displays a low rosette, spreading ground cover growth habit, reaching up to 0.5 ft tall with a spread of approximately 1.5 ft. Large-headed Gnephosis produces small daisy-like flowers in shades of white, pink, or purple.

Leaf size: approximately 2 inches.

How Often Should You Water a Large-headed Gnephosis?

Water a young or newly planted Large-headed Gnephosis 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 Large-headed Gnephosis Need?

Large-headed Gnephosis thrives in full sun to partial shade.

Light Requirement

Full sun to partial shade

What Temperature and Humidity Does the Large-headed Gnephosis Prefer?

Gnephosis macrocephala tolerates temperatures of 60–80°F. Large-headed Gnephosis prefers humidity levels of 40–70%.

Temperature

60–80°F

Humidity

40–70%

What Soil Mix Works Best for a Large-headed Gnephosis?

Well-draining sandy loam with added organic matter for moisture retention. Good drainage is essential for Large-headed Gnephosis to prevent waterlogging, which leads to root rot and fungal issues.

How Often Should You Fertilize a Large-headed Gnephosis?

Feed Large-headed Gnephosis 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 Large-headed Gnephosis?

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

Large-headed Gnephosis 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 Large-headed Gnephosis?

Large-headed Gnephosis can spread to about 2 ft (0.5 m) and reach about 1 ft (0 m) tall. Space plants about 2 ft (0.5 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 Large-headed Gnephosis?

Prune Large-headed Gnephosis 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 Large-headed Gnephosis in Winter?

Large-headed Gnephosis 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 Large-headed Gnephosis?

Large-headed Gnephosis can be propagated through seeds, division of clumps. Similar propagation techniques also apply to needle-leaf gnephosis plant care, which shares the same genus.

Is the Large-headed Gnephosis Toxic to Pets and Children?

Pet safety not verified

The ASPCA does not list Large-headed Gnephosis, 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 Large-headed Gnephosis?

Large-headed Gnephosis 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 Large-headed Gnephosis Need?

Large-headed Gnephosis grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Large-headed Gnephosis is native to the south-west of Western Australia. In cooler regions, grow Large-headed Gnephosis as a houseplant or bring it indoors before the first frost.

Hardiness Zone

Zone 13a

Keep exploring plants

Large-headed Gnephosis 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 Gnephosis genus (family Asteraceae) — search all Gnephosis species in the plant lookup.

Large-headed Gnephosis thrives in bright light and direct sun — see other bright-light plants.

More Gnephosis Species

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

Sources

  • Scientific name & taxonomy: Gnephosis macrocephala Turcz., family Asteraceae (first published in Bulletin de la Soci?t? Imp?riale des Naturalistes de Moscou 24(1) 1851) — World Flora Online record, IPNI name record.
  • Pet toxicity: Pet safety not verified: the ASPCA does not list Large-headed Gnephosis, 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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