Cold hardiness & minimum temperature

Is Wild Custard Apple (Annona senegalensis)cold hardy? Hardiness zone & min temp

Also called Wild Custard Apple, African Custard Apple, Wild Soursop, Senegal Custard Apple.

More about wild custard apple

About Wild Custard Apple

Annona senegalensis · also called Wild Custard Apple, African Custard Apple · tropical

A drought-adapted African shrub or small tree found across tropical and subtropical Africa, valued for its edible yellow fruits, traditional medicinal uses, and ability to thrive in semi-arid savanna conditions. More cold- and drought-tolerant than most Annona species, it naturally loses its leaves in the dry season and regenerates vigorously from its root system.

Cold limit: USDA 9b–11 · RHS H1b (17–38°C)

What wild custard apple's hardiness rating actually means

Wild Custard Apple 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 9b–11 — 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). Wild Custard Apple has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

Concretely, for wild custard apple 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 wild custard apple 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 wild custard apple can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H1b figure above.

Wild Custard Apple hardiness — frequently asked questions

Is wild custard apple cold hardy?

Wild Custard Apple 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. Wild Custard Apple can only live outside year-round in genuinely frost-free climates (roughly USDA 9b–11); everywhere else it is a houseplant that summers out at most.

What is the minimum temperature wild custard apple can survive?

What hardiness zone is wild custard apple?

Wild Custard Apple is rated USDA 9b–11 and RHS H1b — Sub-tropical — a normal warm home is fine, but it cannot go outside in a cool season.

Can wild custard apple 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 wild custard apple 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.