Cold hardiness & minimum temperature

Is Cherapu (Garcinia prainiana)cold hardy? Hardiness zone & min temp

Also called Cherapu, Button Mangosteen.

More about cherapu

About Cherapu

Garcinia prainiana · also called Cherapu, Button Mangosteen · tropical

Cherapu is a rare Malaysian fruit tree closely related to mangosteen, producing small orange fruits with sweet-sour, juicy flesh. Unlike mangosteen it is dioecious (needs male and female trees) and responds well to container cultivation, making it more accessible to tropical and subtropical gardeners. It demands tropical warmth, high humidity, and well-drained, organically rich soil.

Cold limit: USDA 10b–12 · RHS H1a (21–35°C)

Watch for — Cold shock and leaf drop: Any temperature below 10°C causes leaf drop and growth arrest. Bring containerised plants indoors before temperatures fall below 15°C. Recovery from cold damage is slow; protect proactively rather than reactively.

What cherapu's hardiness rating actually means

Cherapu 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 10b–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). Cherapu has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

Concretely, for cherapu 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 cherapu 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 cherapu can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H1a figure above.

Cherapu hardiness — frequently asked questions

Is cherapu cold hardy?

Cherapu 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. Cherapu can only live outside year-round in genuinely frost-free climates (roughly USDA 10b–12); everywhere else it is a houseplant that summers out at most.

What is the minimum temperature cherapu can survive?

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

What hardiness zone is cherapu?

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

Can cherapu 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 cherapu 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.