Cold hardiness & minimum temperature

Is Gamboge (Garcinia cambogia)cold hardy? Hardiness zone & min temp

Also called Gamboge, Malabar Tamarind, Brindleberry, Kudampuli.

More about gamboge

About Gamboge

Garcinia cambogia · also called Gamboge, Malabar Tamarind · tropical

A medium-sized tropical evergreen tree native to the Western Ghats of India and Sri Lanka, cultivated for its ribbed, pumpkin-shaped acidic fruits used as a souring agent in South Asian and Southeast Asian cuisine. Also known as Malabar tamarind. Demands full sun, consistent moisture, high humidity, and frost-free tropical conditions.

Cold limit: USDA 10–12 · RHS H1a (18–35°C)

Watch for — Leaf yellowing in cold or dry conditions: Temperatures below 15°C or prolonged dry spells cause chlorotic yellowing and leaf drop. Move containers indoors before temperatures cool in autumn and maintain consistent watering and humidity year-round.

What gamboge's hardiness rating actually means

Gamboge is not cold hardy. It is a tropical houseplant that dies if it is left out through frost — there is no zone where it overwinters outdoors in a UK or cold-US climate. Its RHS rating of H1a means: Tropical — needs a heated room or greenhouse; no frost tolerance whatsoever. On the US scale that maps to USDA 10–12 — the zones where it can be left outdoors year-round.

New to these scales? The USDA hardiness zone map explained covers how the zone numbers work, and you can find your own zone with the zone finder.

Minimum temperature — and what happens below it

Minimum survivable temperature is roughly above about 15 °C (warm, never cold). Gamboge has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

Concretely, for gamboge as it gets too cold:

Below about above about 15 °C, growth stalls and the leaves start to show cold stress — dark, water-soaked, or yellowing patches.
A single light frost blackens the foliage; a hard freeze kills the whole plant, roots included, and it does not recover.
Even a cold, draughty windowsill or an unheated porch in winter can be enough to damage it permanently.

Can gamboge go outside or overwinter — and where?

It can holiday outdoors in summer once nights are reliably above above 15 °C, in shade or dappled light, hardened off gradually.
Bring it back indoors well before the first autumn frost — do not wait for a frost warning, move it when nights drop toward 10-12 °C.
It will never overwinter outside in a temperate climate; the indoors is its winter home, full stop.

Work back from your local frost dates with the frost-date calculator: the last spring frost and first autumn frost are what really decide when gamboge can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H1a figure above.

Gamboge hardiness — frequently asked questions

Is gamboge cold hardy?

Gamboge is not cold hardy. It is a tropical houseplant that dies if it is left out through frost — there is no zone where it overwinters outdoors in a UK or cold-US climate. Indoor-only in almost every home. Gamboge can only live outside year-round in genuinely frost-free climates (roughly USDA 10–12); everywhere else it is a houseplant that summers out at most.

What is the minimum temperature gamboge can survive?

Minimum survivable temperature is roughly above about 15 °C (warm, never cold). Gamboge has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

What hardiness zone is gamboge?

Gamboge is rated USDA 10–12 and RHS H1a — Tropical — needs a heated room or greenhouse; no frost tolerance whatsoever.

Can gamboge survive winter outside?

It can holiday outdoors in summer once nights are reliably above above 15 °C, in shade or dappled light, hardened off gradually. Bring it back indoors well before the first autumn frost — do not wait for a frost warning, move it when nights drop toward 10-12 °C. It will never overwinter outside in a temperate climate; the indoors is its winter home, full stop.

What happens to gamboge below its minimum temperature?

Below about above about 15 °C, growth stalls and the leaves start to show cold stress — dark, water-soaked, or yellowing patches. A single light frost blackens the foliage; a hard freeze kills the whole plant, roots included, and it does not recover. Even a cold, draughty windowsill or an unheated porch in winter can be enough to damage it permanently.