Cold hardiness & minimum temperature

Is Banana passionfruit (Passiflora antioquiensis)cold hardy? Hardiness zone & min temp

Also called Banana passionfruit, Red banana passion flower, Curuba de Castilla.

More about banana passionfruit

About Banana passionfruit

Passiflora antioquiensis · also called Banana passionfruit, Red banana passion flower · flowering

Banana passionfruit is a spectacular high-altitude Colombian climber producing pendulous, deep rose-pink flowers up to 12 cm across, followed by elongated yellow-orange fruit with edible pulp. Unlike most passionflowers, it thrives in cool montane conditions. Ideal for temperate greenhouses or mild coastal gardens, it attracts hummingbirds in its native range.

Cold limit: USDA 9-11 · RHS H2 (5–22°C)

Watch for — Stem die-back in cold, wet winters: Though more frost-tolerant than most passionflowers, prolonged wet cold at roots causes stem die-back. Mulch the root zone heavily in autumn and ensure container plants are in frost-free conditions below 3°C.

What banana passionfruit's hardiness rating actually means

Banana passionfruit 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 9-11 — 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 1 to 5 °C — tolerates cold but no real frost. Banana passionfruit shrugs off cold nights but a real, sustained freeze will kill it.

Concretely, for banana passionfruit 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 banana passionfruit go outside or overwinter — and where?

It can live outside year-round only in the mildest, most sheltered part of USDA 9-11 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 banana passionfruit 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 banana passionfruit

Banana passionfruit 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.

Banana passionfruit hardiness — frequently asked questions

Is banana passionfruit cold hardy?

Banana passionfruit 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 9-11 (and sheltered UK gardens) banana passionfruit can stay out; in colder areas it must be lifted, brought in, or treated as a frost-tender plant.

What is the minimum temperature banana passionfruit can survive?

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

What hardiness zone is banana passionfruit?

Banana passionfruit is rated USDA 9-11 and RHS H2 — Tender — survives a frost-free greenhouse or a very mild, sheltered spot.

Can banana passionfruit survive winter outside?

It can live outside year-round only in the mildest, most sheltered part of USDA 9-11 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 banana passionfruit 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.