Cold hardiness & minimum temperature

Is Mamey Sapote (Pouteria sapota)cold hardy? Hardiness zone & min temp

Also called Mamey sapote, Mamey, Mammee sapote.

More about mamey sapote

About Mamey Sapote

Pouteria sapota · also called Mamey sapote, Mamey · tropical

Mamey sapote is a large tropical evergreen from Central America bearing brown rough-skinned fruit with rich, sweet salmon-pink flesh tasting of pumpkin, sweet potato and almond. It needs full sun, heat and frost-free conditions and grows large in the ground. Frost-tender, it is best as a grafted specimen in big containers in cool climates.

Cold limit: USDA 10-11 (container/indoor elsewhere) · RHS H1b (22-32°C)

Watch for — Frost sensitivity: Very tender; foliage and young wood are damaged near freezing and frost can kill young trees. Protect or overwinter containers in a frost-free, bright location.

What mamey sapote's hardiness rating actually means

Mamey Sapote 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 H1b means: Sub-tropical — a normal warm home is fine, but it cannot go outside in a cool season. On the US scale that maps to USDA 10-11 (container/indoor elsewhere) — 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 about 10 °C (sustained cold below this is damaging). Mamey Sapote has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

Concretely, for mamey sapote as it gets too cold:

Below about about 10 °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 mamey sapote go outside or overwinter — and where?

It can holiday outdoors in summer once nights are reliably above 10 °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 mamey sapote can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H1b figure above.

Mamey Sapote hardiness — frequently asked questions

Is mamey sapote cold hardy?

Mamey Sapote 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. Mamey Sapote can only live outside year-round in genuinely frost-free climates (roughly USDA 10-11 (container/indoor elsewhere)); everywhere else it is a houseplant that summers out at most.

What is the minimum temperature mamey sapote can survive?

Minimum survivable temperature is roughly about 10 °C (sustained cold below this is damaging). Mamey Sapote has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

What hardiness zone is mamey sapote?

Mamey Sapote is rated USDA 10-11 (container/indoor elsewhere) and RHS H1b — Sub-tropical — a normal warm home is fine, but it cannot go outside in a cool season.

Can mamey sapote survive winter outside?

It can holiday outdoors in summer once nights are reliably above 10 °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 mamey sapote below its minimum temperature?

Below about about 10 °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.