Three-fingered Hibiscus Plant Care

Hibiscus tridactylites Lindl.

Updated · Sources · How we source care data

Hibiscus trionum, commonly called flower-of-an-hour, bladder hibiscus, bladder ketmia, bladder weed, puarangi and venice mallow, is an annual plant native to the Old World tropics and subtropics. It has spread throughout southern Europe both as a weed and cultivated as a garden plant.

Water

Every 4–7 days

Light

Full sun to partial shade

Temp

60–90°F

Humidity

50–70%

At a glance

How do you care for Three-fingered Hibiscus?

Plant Three-fingered Hibiscus in full sun to partial shade (USDA zones 13a) and water a young tree every 4–7 days until it is established. It tolerates temperatures of 60–90°F (16–32°C). Fertilize it every 4 months during the growing season.

What Is the Three-fingered Hibiscus?

Three-fingered Hibiscus (Hibiscus tridactylites) belongs to the Malvaceae family within the Hibiscus genus. Three-fingered Hibiscus is native to the Old World tropics and subtropics.

Three-fingered Hibiscus displays an upright, bushy shrub growth habit, reaching up to 6 ft tall with a spread of approximately 4 ft. Three-fingered Hibiscus produces large, showy flowers in various colors.

Leaf size: approximately 4 inches.

How Often Should You Water a Three-fingered Hibiscus?

Water a young or newly planted Three-fingered Hibiscus every 4–7 days, soaking the whole root zone, until it is established — usually one to two growing seasons. Established trees mainly need water during long dry spells. In a container, water whenever the top few centimetres of soil are dry.

Watering Frequency

Every 4–7 days

Until established; then in dry spells

What Light Does the Three-fingered Hibiscus Need?

Three-fingered Hibiscus thrives in full sun to partial shade.

Light Requirement

Full sun to partial shade

What Temperature and Humidity Does the Three-fingered Hibiscus Prefer?

Hibiscus tridactylites tolerates temperatures of 60–90°F. Three-fingered Hibiscus prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Temperature

60–90°F

Humidity

50–70%

What Soil Mix Works Best for a Three-fingered Hibiscus?

Well-draining, slightly acidic soil with organic matter. Good drainage is essential for Three-fingered Hibiscus to prevent waterlogging, which leads to root rot and fungal issues.

How Often Should You Fertilize a Three-fingered Hibiscus?

Feed Three-fingered Hibiscus every 4 months during the growing season with a balanced, slow-release fertilizer at the rate on the label. Established trees 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 4 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 Three-fingered Hibiscus?

Choose a spot with full sun to partial shade and well-draining, slightly acidic soil with organic matter. Avoid low spots where water collects after rain.

Three-fingered Hibiscus is suited to USDA Zone 13a.

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

How Far Apart Should You Plant a Three-fingered Hibiscus?

Three-fingered Hibiscus can spread to about 4 ft (1.2 m) and reach about 6 ft (2 m) tall. Space plants about 4 ft (1.2 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 tree spacing calculator.

How Do You Prune a Three-fingered Hibiscus?

Prune Three-fingered Hibiscus 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 tree in one year.

How Do You Care for a Three-fingered Hibiscus in Winter?

Three-fingered Hibiscus 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 Three-fingered Hibiscus?

Three-fingered Hibiscus can be propagated through softwood cuttings, seeds. Similar propagation techniques also apply to chinese hibiscus plant care, which shares the same genus.

Is the Three-fingered Hibiscus Toxic to Pets and Children?

Pet safety not verified

The ASPCA does not list Three-fingered Hibiscus, 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 Three-fingered Hibiscus?

Three-fingered Hibiscus 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 Three-fingered Hibiscus Need?

Three-fingered Hibiscus grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Three-fingered Hibiscus is native to the Old World tropics and subtropics. In cooler regions, grow Three-fingered Hibiscus as a houseplant or bring it indoors before the first frost.

Hardiness Zone

Zone 13a

Keep exploring plants

Three-fingered Hibiscus 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 Hibiscus genus — compare its care with other Hibiscus species on PlantoScan.

Hibiscus is part of the Malvaceae plant family — browse all Malvaceae genera and species.

Three-fingered Hibiscus thrives in bright light and direct sun — see other bright-light plants.

More Hibiscus Species

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

Sources

  • Scientific name & taxonomy: Hibiscus tridactylites Lindl., family Malvaceae (first published in Three Exped. Australia 1: 85 (1838)) — World Flora Online record, IPNI name record.
  • Pet toxicity: Pet safety not verified: the ASPCA does not list Three-fingered Hibiscus, 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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