Small-leaved Poranthera Plant Care

Poranthera microphylla Brongn.

Updated · Sources · How we source care data

Poranthera microphylla, commonly known as small poranthera, is a flowering plant in the family Phyllanthaceae. It is a small, widespread Australian herb with blue-grey leaves and white flowers.

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 Small-leaved Poranthera?

Plant Small-leaved Poranthera 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.

What Is the Small-leaved Poranthera?

Small-leaved Poranthera (Poranthera microphylla) belongs to the Phyllanthaceae family within the Poranthera genus.

Small-leaved Poranthera displays a low spreading shrub growth habit, reaching up to 1.5 ft tall with a spread of approximately 2 ft. Small-leaved Poranthera produces small clusters of white or pink flowers.

Leaf size: approximately 3 inches.

How Often Should You Water a Small-leaved Poranthera?

Water a young or newly planted Small-leaved Poranthera 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 Small-leaved Poranthera Need?

Small-leaved Poranthera thrives in full sun to partial shade.

Light Requirement

Full sun to partial shade

What Temperature and Humidity Does the Small-leaved Poranthera Prefer?

Poranthera microphylla tolerates temperatures of 60–80°F. Small-leaved Poranthera prefers humidity levels of 40–70%.

Temperature

60–80°F

Humidity

40–70%

What Soil Mix Works Best for a Small-leaved Poranthera?

Well-draining sandy soil mix with added organic matter. Good drainage is essential for Small-leaved Poranthera to prevent waterlogging, which leads to root rot and fungal issues.

How Often Should You Fertilize a Small-leaved Poranthera?

Feed Small-leaved Poranthera 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 Small-leaved Poranthera?

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

Small-leaved Poranthera 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 Small-leaved Poranthera?

Small-leaved Poranthera 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 Small-leaved Poranthera?

Prune Small-leaved Poranthera 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 Small-leaved Poranthera in Winter?

Small-leaved Poranthera 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 Small-leaved Poranthera?

Small-leaved Poranthera can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to poranthera corymbosa plant care, which shares the same genus.

Is the Small-leaved Poranthera Toxic to Pets and Children?

Pet safety not verified

The ASPCA does not list Small-leaved Poranthera, 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 Small-leaved Poranthera?

Small-leaved Poranthera is susceptible to spider mites, aphids. 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 Small-leaved Poranthera Need?

Small-leaved Poranthera grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. In cooler regions, grow Small-leaved Poranthera as a houseplant or bring it indoors before the first frost.

Hardiness Zone

Zone 13a

Keep exploring plants

Small-leaved Poranthera 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 Poranthera genus — compare its care with other Poranthera species on PlantoScan.

Poranthera is part of the Phyllanthaceae plant family — browse all Phyllanthaceae genera and species.

Small-leaved Poranthera thrives in bright light and direct sun — see other bright-light plants.

Related Plant Care Guides

Closely related plants with similar care requirements:

Sources

  • Scientific name & taxonomy: Poranthera microphylla Brongn., family Phyllanthaceae (first published in Ann. Sci. Nat. (Paris) 29: 385 (1833)) — World Flora Online record, IPNI name record.
  • Pet toxicity: Pet safety not verified: the ASPCA does not list Small-leaved Poranthera, 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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