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Plant care

Tampoi (Kapul) care

Baccaurea dulcis

Also called Tampoi, Kapul, Kapul Putih.

RHS H1aUSDA 11–12Mildly toxic to petsIndoor 3–20 m tall (10–65 ft)

Watering rhythm

Bright indirect light (just back from a sunny window)

2–3 times per week; maintain consistently moist soil

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Light

Bright indirect light (just back from a sunny window)

Soil

Rich loamy soil with high organic content; pH 5.0–6.5

Humidity

75–100%

Temp

22–35°C

Pet safety

Mildly toxic to pets

Mature size

3–20 m tall (10–65 ft)

Care at a glance

Light

Bright but filtered. Tampoi burns within days in unfiltered south-facing summer sun, and stops growing within months in deep shade. Tolerates partial shade and performs well under the canopy of taller trees in its native habitat. Young plants should be shaded from intense direct midday sun. Established trees fruit adequately in full sun to partial shade in tropical climates. If you only have a south window, set the plant back 1.5 m or hang a sheer curtain — both knock the intensity down into the right range.

Watering

Watering tampoi: 2–3 times per week; maintain consistently moist soil. The number that matters isn't the day of the week — it's how dry the top 2-3 cm of the pot feels. A finger in the soil tells you more than a watering app. After every watering, tip the saucer. Requires regular, even moisture consistent with its rainforest habitat. Allow the surface to approach dryness between waterings but do not let the root zone desiccate. Excellent drainage is essential — the species grows in swampy and well-drained sites but waterlogging causes root disease.

Soil and pot

Tampoi grows best in rich loamy soil with high organic content; ph 5.0–6.5. In nature found in peat-swamp, kerangas, and alluvial forest soils. In cultivation, a mix of loam, compost, and perlite or coarse sand improves drainage while retaining fertility. Keep soil slightly acidic. Mulch generously to maintain moisture and supply organic matter. 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

Tampoi sits happiest at around 75–100% humidity and 22–35°C (72–95°F). Strict tropical humidity requirements; resembles deep rainforest conditions. In lower-humidity environments, mist foliage daily and keep the plant away from air-conditioning drafts. Groups of plants raise microclimate humidity. If you keep the room above 22–35°C 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 tampoi sparingly. Feed monthly with a balanced liquid fertilizer during the growing season (spring through autumn). Incorporate well-rotted compost into the soil annually. Avoid excess synthetic nitrogen which stimulates leafy growth at the expense of fruiting. 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 tampoi in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Leaf scorch in direct midday sun — Foliage of young plants scorches under harsh direct sun, especially in lowland tropical settings. Provide 30–50% shade cloth or position under a light canopy until the plant is established.
  • Root rot in stagnant conditions — Despite occupying some wet forest sites, stagnant poorly oxygenated soil encourages Phytophthora. Ensure free drainage at all times, especially in pots. Raise containers off the ground.
  • Rare in cultivation — sourcing difficulty — Tampoi is uncommon outside specialist tropical fruit nurseries. Seeds must be sown fresh as viability declines rapidly. Contact tropical fruit society networks for reliable seed or cutting sources.

Propagation

Sow fresh seeds immediately after fruit harvest in warm (28–32°C), moist tropical mix; germination in 4–8 weeks. Air layering on mature stems is effective. Cuttings are possible with bottom heat and high humidity. Grafting onto related Baccaurea rootstock is practiced by specialist growers. 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

Tampoi is mildly toxic to pets. Baccaurea dulcis (family Phyllanthaceae) is not individually listed by ASPCA. The ripe fruit is consumed by humans with no reported toxic effects. No toxic principles have been documented for this genus. Pet safety has not been assessed by ASPCA. As a precaution, prevent pets from ingesting seeds or unripe fruit. 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.

Tampoi care — frequently asked questions

What is the common name for Baccaurea dulcis?

Baccaurea dulcis is most commonly called Tampoi, but it is also known as Tampoi, Kapul, Kapul Putih. The names refer to the same species, so care instructions for Tampoi apply identically to anything sold as Kapul.

How much light does tampoi need?

Tampoi grows best in bright indirect light (just back from a sunny window). Tolerates partial shade and performs well under the canopy of taller trees in its native habitat. Young plants should be shaded from intense direct midday sun. Established trees fruit adequately in full sun to partial shade in tropical climates.

How often should I water tampoi?

Water tampoi 2–3 times per week; maintain consistently moist soil. Requires regular, even moisture consistent with its rainforest habitat. Allow the surface to approach dryness between waterings but do not let the root zone desiccate. Excellent drainage is essential — the species grows in swampy and well-drained sites but waterlogging causes root disease. 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 tampoi toxic to cats and dogs?

Tampoi is mildly toxic to pets. Baccaurea dulcis (family Phyllanthaceae) is not individually listed by ASPCA. The ripe fruit is consumed by humans with no reported toxic effects. No toxic principles have been documented for this genus. Pet safety has not been assessed by ASPCA. As a precaution, prevent pets from ingesting seeds or unripe fruit.

What USDA hardiness zone does tampoi grow in?

Tampoi is rated for USDA zone 11–12 and RHS hardiness H1a. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Tampoi deep-dive guides

Every aspect of tampoi care, each with its own calibrated guide:

Featured in these plant shortlists

Tampoi qualifies for 2 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

Related guides

Tampoi is also known as Tampoi, Kapul, and Kapul Putih.