Cold hardiness & minimum temperature

Is Ice Cream Banana (Musa acuminata × balbisiana 'Ice Cream')cold hardy? Hardiness zone & min temp

Also called Ice Cream banana, Blue Java banana.

More about ice cream banana

About Ice Cream Banana

Musa acuminata × balbisiana 'Ice Cream' · also called Ice Cream banana, Blue Java banana · tropical

The Ice Cream or Blue Java banana is famed for silvery-blue tinged fruit whose creamy, custard-like flesh is said to taste of vanilla ice cream. An AAB-group hybrid, it is more cold-hardy and wind-tolerant than Cavendish, making it a favourite for cooler subtropical gardens. A vigorous herbaceous perennial, it wants full sun, rich moist soil, and steady feeding to fruit.

Cold limit: USDA 8-11 outdoors (more cold-hardy than Cavendish); container/indoor in cooler zones · RHS H2 (18-30°C)

Watch for — Frost kill of foliage: Hardier than Cavendish, but frost still blackens leaves; the corm can resprout if mulched. Protect or overwinter in cool climates.

What ice cream banana's hardiness rating actually means

Ice Cream Banana is half-hardy (RHS H2). It survives a mild winter outdoors in a sheltered spot, but a hard frost kills it — so in colder zones it is lifted, potted, or grown as a tender plant. Its RHS rating of H2 means: Tender — survives a frost-free greenhouse or a very mild, sheltered spot. On the US scale that maps to USDA 8-11 outdoors (more cold-hardy than Cavendish); container/indoor in cooler zones — 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 1 to 5 °C — tolerates cold but no real frost. Ice Cream Banana shrugs off cold nights but a real, sustained freeze will kill it.

Concretely, for ice cream banana as it gets too cold:

Down to roughly about 1 to 5 °C it copes, especially if dry and sheltered.
A sustained hard frost collapses the top growth; whether it returns depends on whether the roots, crown or tubers froze.
Wet cold is far more lethal than dry cold for this plant — soggy, frozen soil is the usual killer.

Can ice cream banana go outside or overwinter — and where?

It can live outside year-round only in the mildest, most sheltered part of USDA 8-11 outdoors (more cold-hardy than Cavendish); container/indoor in cooler zones or a frost-free UK microclimate.
In colder zones, grow it in a pot you can move under cover, or lift its tubers/roots and store them frost-free over winter.
A south-facing wall, free-draining soil and a dry winter position can push it a full zone hardier than the books suggest.

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 ice cream banana can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H2 figure above.

Frost protection for borderline ice cream banana

Ice Cream Banana is right on a hardiness edge in many gardens, so if you are pushing it, these measures buy it the margin it needs:

Mulch the crown or root zone deeply with bark, straw or leaf-mould before the first hard frost.
Move container plants against a warm wall or into an unheated but frost-free porch or greenhouse.
Fleece the top growth on the coldest nights, and keep it on the dry side — dry roots survive cold far better than wet ones.
Lift dahlia-type tubers or tender crowns after the first light frost blackens the foliage and store them somewhere cool but frost-free.

Ice Cream Banana hardiness — frequently asked questions

Is ice cream banana cold hardy?

Ice Cream Banana is half-hardy (RHS H2). It survives a mild winter outdoors in a sheltered spot, but a hard frost kills it — so in colder zones it is lifted, potted, or grown as a tender plant. Borderline outdoors. In its mild end of USDA 8-11 outdoors (more cold-hardy than Cavendish); container/indoor in cooler zones (and sheltered UK gardens) ice cream banana can stay out; in colder areas it must be lifted, brought in, or treated as a frost-tender plant.

What is the minimum temperature ice cream banana can survive?

Minimum survivable temperature is roughly about 1 to 5 °C — tolerates cold but no real frost. Ice Cream Banana shrugs off cold nights but a real, sustained freeze will kill it.

What hardiness zone is ice cream banana?

Ice Cream Banana is rated USDA 8-11 outdoors (more cold-hardy than Cavendish); container/indoor in cooler zones and RHS H2 — Tender — survives a frost-free greenhouse or a very mild, sheltered spot.

Can ice cream banana survive winter outside?

It can live outside year-round only in the mildest, most sheltered part of USDA 8-11 outdoors (more cold-hardy than Cavendish); container/indoor in cooler zones or a frost-free UK microclimate. In colder zones, grow it in a pot you can move under cover, or lift its tubers/roots and store them frost-free over winter. A south-facing wall, free-draining soil and a dry winter position can push it a full zone hardier than the books suggest.

How do I protect ice cream banana from frost?

Mulch the crown or root zone deeply with bark, straw or leaf-mould before the first hard frost. Move container plants against a warm wall or into an unheated but frost-free porch or greenhouse. Fleece the top growth on the coldest nights, and keep it on the dry side — dry roots survive cold far better than wet ones. Lift dahlia-type tubers or tender crowns after the first light frost blackens the foliage and store them somewhere cool but frost-free.