Thyme-leaved Tetratheca Plant Care

Tetratheca thymifolia Sm.

Updated · Sources · How we source care data

Tetratheca thymifolia, commonly known as black-eyed Susan or thyme pink-bells, is a small shrub in the family Elaeocarpaceae found in southeastern Australia.

Water

Every 7–10 days

Light

Full sun to partial shade

Temp

50–80°F

Humidity

40–70%

At a glance

How do you care for Thyme-leaved Tetratheca?

Plant Thyme-leaved Tetratheca in full sun to partial shade (USDA zones 12a) and water a young shrub every 7–10 days until it is established. It tolerates temperatures of 50–80°F (10–27°C). Fertilize it every 6 months during the growing season.

Where Is the Thyme-leaved Tetratheca Native To?

Native range1 country

What Is the Thyme-leaved Tetratheca?

Thyme-leaved Tetratheca (Tetratheca thymifolia) belongs to the Elaeocarpaceae family within the Tetratheca genus. Thyme-leaved Tetratheca is native to southeastern Australia.

Thyme-leaved Tetratheca displays a low, spreading shrub growth habit, reaching up to 1.5 ft tall with a spread of approximately 2 ft. Thyme-leaved Tetratheca produces small, bell-shaped flowers in shades of pink, purple, or white.

Leaf size: approximately 1.5 inches.

How Often Should You Water a Thyme-leaved Tetratheca?

Water a young or newly planted Thyme-leaved Tetratheca 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 Thyme-leaved Tetratheca Need?

Thyme-leaved Tetratheca thrives in full sun to partial shade.

Light Requirement

Full sun to partial shade

What Temperature and Humidity Does the Thyme-leaved Tetratheca Prefer?

Tetratheca thymifolia tolerates temperatures of 50–80°F. Thyme-leaved Tetratheca prefers humidity levels of 40–70%.

Temperature

50–80°F

Humidity

40–70%

What Soil Mix Works Best for a Thyme-leaved Tetratheca?

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

How Often Should You Fertilize a Thyme-leaved Tetratheca?

Feed Thyme-leaved Tetratheca 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 Thyme-leaved Tetratheca?

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.

Thyme-leaved Tetratheca is suited to USDA Zone 12a.

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 Thyme-leaved Tetratheca?

Thyme-leaved Tetratheca can spread to about 2 ft (0.6 m) and reach about 2 ft (0 m) tall. Space plants about 2 ft (0.6 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 Thyme-leaved Tetratheca?

Prune Thyme-leaved Tetratheca 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 Thyme-leaved Tetratheca in Winter?

Thyme-leaved Tetratheca is frost-tender (hardy to USDA zone 12). 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 Thyme-leaved Tetratheca?

Thyme-leaved Tetratheca can be propagated through softwood cuttings, seeds. Similar propagation techniques also apply to tetratheca affinis plant care, which shares the same genus.

Is the Thyme-leaved Tetratheca Toxic to Pets and Children?

Pet safety not verified

The ASPCA does not list Thyme-leaved Tetratheca, 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 Thyme-leaved Tetratheca?

Thyme-leaved Tetratheca is susceptible to aphids, scale insects, 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 Thyme-leaved Tetratheca Need?

Thyme-leaved Tetratheca grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Thyme-leaved Tetratheca is native to southeastern Australia. In cooler regions, grow Thyme-leaved Tetratheca as a houseplant or bring it indoors before the first frost.

Hardiness Zone

Zone 12a

Keep exploring plants

Thyme-leaved Tetratheca 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 Tetratheca genus — compare its care with other Tetratheca species on PlantoScan.

Tetratheca is part of the Elaeocarpaceae plant family — browse all Elaeocarpaceae genera and species.

Thyme-leaved Tetratheca thrives in bright light and direct sun — see other bright-light plants.

More Tetratheca Species

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

Sources

  • Scientific name & taxonomy: Tetratheca thymifolia Sm., family Elaeocarpaceae (first published in Exot. Bot. 1: 41 (1805)) — World Flora Online record, IPNI name record.
  • Pet toxicity: Pet safety not verified: the ASPCA does not list Thyme-leaved Tetratheca, 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 12a, 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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