Chamber bitter (Phyllanthus amarus)

Photo: Kevin FaccendaCC BY 4.0via iNaturalistresized / cropped

Chamber bitter Plant Care

Phyllanthus amarus Schumach. & Thonn.

Updated · Sources · How we source care data

This plant's leaves are small, oval-shaped, and arranged in an alternating pattern along its stems. Originating from tropical regions in South America, Phyllanthus amarus is highly sought after by plant collectors for its potential medicinal properties and attractive appearance. Its vibrant green foliage and delicate flowers add a touch of exotic beauty to any collection.

Water

Every 7–10 days

Light

Bright indirect light

Temp

65–80°F

Humidity

50–70%

At a glance

How do you care for Chamber bitter?

Plant Chamber bitter in bright indirect light (USDA zones 10a–12b) and water a young shrub every 7–10 days until it is established. It tolerates temperatures of 65–80°F (18–27°C). Fertilize it every 6 months during the growing season.

Where Is the Chamber bitter Native To?

Native range88 countries

What Is the Chamber bitter?

Chamber bitter (Phyllanthus amarus) belongs to the Phyllanthaceae family within the Phyllanthus genus. Chamber bitter is native to tropical regions in the Americas, Africa, India, China, Sri Lanka, and Southeast Asia. Chamber bitter is also known as Gale of the wind, Quebra pedra, Carry me back.

Chamber bitter displays an upright, bushy shrub growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Chamber bitter produces small greenish-yellow flowers.

Leaf size: approximately 4 inches.

How Often Should You Water a Chamber bitter?

Water a young or newly planted Chamber bitter 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 Chamber bitter Need?

Chamber bitter thrives in bright indirect light. Avoid placing Chamber bitter in direct, harsh sunlight for extended periods, as this can scorch the foliage.

Light Requirement

Bright indirect light

What Temperature and Humidity Does the Chamber bitter Prefer?

Phyllanthus amarus tolerates temperatures of 65–80°F. Chamber bitter prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Temperature

65–80°F

Humidity

50–70%

What Soil Mix Works Best for a Chamber bitter?

Well-draining soil mix with added perlite for improved drainage. Good drainage is essential for Chamber bitter to prevent waterlogging, which leads to root rot and fungal issues.

How Often Should You Fertilize a Chamber bitter?

Feed Chamber bitter 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 Chamber bitter?

Choose a spot with bright indirect light and well-draining soil mix with added perlite for improved drainage. Avoid low spots where water collects after rain.

Chamber bitter is suited to USDA Zone 10a – 12b.

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 Chamber bitter?

Chamber bitter can spread to about 2 ft (0.6 m) and reach about 3 ft (1 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 Chamber bitter?

Prune Chamber bitter 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 Chamber bitter in Winter?

Chamber bitter is frost-tender (hardy to USDA zone 10). 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 Chamber bitter?

Chamber bitter can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to anamalai leaf flower plant care, which shares the same genus.

Is the Chamber bitter Toxic to Pets and Children?

Pet safety not verified

The ASPCA does not list Chamber bitter, 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 Chamber bitter?

Chamber bitter 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 Chamber bitter Need?

Chamber bitter grows outdoors in USDA Zone 10a – 12b. It survives winters down to planting zone 10a. Chamber bitter is native to tropical regions in the Americas, Africa, India, China, Sri Lanka, and Southeast Asia. In cooler regions, grow Chamber bitter as a houseplant or bring it indoors before the first frost.

Hardiness Zone

Zone 10a – 12b

Keep exploring plants

Chamber bitter 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 Phyllanthus genus — compare its care with other Phyllanthus species on PlantoScan.

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

Chamber bitter thrives in bright light and direct sun — see other bright-light plants.

More Phyllanthus Species

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

Sources

  • Scientific name & taxonomy: Phyllanthus amarus Schumach. & Thonn., family Phyllanthaceae (first published in Beskr. Guin. Pl. : 421 (1827)) — World Flora Online record, IPNI name record.
  • Pet toxicity: Pet safety not verified: the ASPCA does not list Chamber bitter, 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.
  • Photo: Kevin Faccenda, CC BY 4.0, iNaturalist — original.
  • Hardiness zone: USDA Zone 10a – 12b, estimated from the plant's typical growing conditions.
  • 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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