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Plant care

Brazilian Plume Flower (Brazilian Plume) care

Justicia carnea

Also called Brazilian Plume, Flamingo Flower, Pink Jacobinia, King's Crown.

RHS H1CUSDA 10-11Pet-safeIndoor 60-120 cm tall indoors

Watering rhythm

5-7days

When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer

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Light

Bright indirect light (just back from a sunny window)

Soil

Rich, well-draining peat-free potting mix

Humidity

50-70%

Temp

16-27°C

Pet safety

Pet-safe

Mature size

60-120 cm tall indoors

Care at a glance

Light

In the wild brazilian plume flower grows on the bright edge of a forest canopy, not in the canopy and not in the open. Indoors, that translates to within a metre of an unobstructed window, sheer curtain optional. Prefers bright, indirect light — an east- or west-facing windowsill is ideal. Direct afternoon sun will scorch leaves, while too little light leads to sparse, leggy growth and reduced flowering. The fastest test: a hand held at the leaf casts a soft-edged shadow at noon — sharp shadow means too much sun, no shadow means too little light.

Watering

Aim for when the top 2-3 cm of soil is dry, roughly every 5-7 days in summer for brazilian plume flower, but treat that as a starting point rather than a rule. A south-facing summer windowsill will dry the pot twice as fast as a north-facing winter room. Lift the pot; if it feels noticeably lighter than it did wet, water it. Keep soil consistently moist but never waterlogged during the growing season. In winter reduce watering significantly; allow the top half of the pot to dry between waterings. Use room-temperature water and ensure the pot drains freely.

Soil and pot

Brazilian Plume Flower grows best in rich, well-draining peat-free potting mix. A blend of peat-free multipurpose compost with added perlite (1:4 ratio) provides good drainage and nutrition. Good aeration prevents root rot, which this species is prone to in compacted or waterlogged soils. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.

Humidity and temperature

Brazilian Plume Flower sits happiest at around 50-70% humidity and 16-27°C (60-80°F). Justicia carnea is native to humid tropical environments and appreciates higher humidity. Mist the foliage lightly, use a pebble tray with water, or run a humidifier nearby. Brown leaf edges often signal air that is too dry. If you keep the room above 16 year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.

Fertilising

Feed brazilian plume flower sparingly. Feed with a balanced liquid fertiliser diluted to half strength every two weeks from spring through to late summer. Avoid fertilising in autumn and winter when growth slows. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.

Common problems

Below are the issues we see most often on brazilian plume flower in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Whitefly — Common in warm, dry conditions. Inspect undersides of leaves regularly and treat with insecticidal soap or neem oil at first sign.
  • Leaf drop after flowering — Normal post-bloom response. Cut stems back by one-third to encourage bushy regrowth and the next flowering cycle.
  • Root rot — Caused by overwatering or poor drainage. Ensure the pot has drainage holes and allow the top layer of soil to dry between waterings.
  • Powdery mildew — Can develop in low-light, poorly ventilated conditions. Improve airflow and treat with a dilute baking-soda spray if mild.
  • Leggy growth — Results from insufficient light. Move to a brighter spot and pinch back stem tips to maintain compact, bushy form.

Companion plants

Brazilian Plume Flower pairs well with Stromanthe sanguinea, Fittonia albivenis, Calathea ornata, and Hypoestes phyllostachya. These are species with similar light and water needs, so you can group them in the same room or on the same shelf and water as a batch.

Propagation

Take 8-10 cm softwood tip cuttings in spring or early summer. Root in moist perlite or a propagation mix at 22-25°C with high humidity; roots typically develop within 3-4 weeks. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.

Toxicity to pets

Brazilian Plume Flower is pet-safe. Justicia carnea is not listed as toxic by the ASPCA. The species is generally regarded as non-toxic to cats and dogs, though ingestion of any plant material in large quantities may cause mild gastric upset. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).

Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.

Brazilian Plume Flower care — frequently asked questions

What is the common name for Justicia carnea?

Justicia carnea is most commonly called Brazilian Plume Flower, but it is also known as Brazilian Plume, Flamingo Flower, Pink Jacobinia, King's Crown. The names refer to the same species, so care instructions for Brazilian Plume Flower apply identically to anything sold as Brazilian Plume.

How much light does brazilian plume flower need?

Brazilian Plume Flower grows best in bright indirect light (just back from a sunny window). Prefers bright, indirect light — an east- or west-facing windowsill is ideal. Direct afternoon sun will scorch leaves, while too little light leads to sparse, leggy growth and reduced flowering.

How often should I water brazilian plume flower?

Water brazilian plume flower when the top 2-3 cm of soil is dry, roughly every 5-7 days in summer. Keep soil consistently moist but never waterlogged during the growing season. In winter reduce watering significantly; allow the top half of the pot to dry between waterings. Use room-temperature water and ensure the pot drains freely. The finger-test (or lifting the pot to feel its weight) beats a fixed weekly calendar because pot size, light, and season all change how fast the soil dries.

Is brazilian plume flower toxic to cats and dogs?

Brazilian Plume Flower is pet-safe. Justicia carnea is not listed as toxic by the ASPCA. The species is generally regarded as non-toxic to cats and dogs, though ingestion of any plant material in large quantities may cause mild gastric upset.

What USDA hardiness zone does brazilian plume flower grow in?

Brazilian Plume Flower is rated for USDA zone 10-11 (indoor-only below zone 10) and RHS hardiness H1C. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Brazilian Plume Flower deep-dive guides

Every aspect of brazilian plume flower care, each with its own calibrated guide:

Featured in these plant shortlists

Brazilian Plume Flower qualifies for 6 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

Related guides

Brazilian Plume Flower is also known as Brazilian Plume, Flamingo Flower, Pink Jacobinia, and King's Crown.