Cold hardiness & minimum temperature

Is Wine Fishtail Palm (Caryota urens)cold hardy? Hardiness zone & min temp

Also called Jaggery Palm, Toddy Palm, Solitary Fishtail Palm.

More about wine fishtail palm

About Wine Fishtail Palm

Caryota urens · also called Jaggery Palm, Toddy Palm · tropical

A tall, solitary fishtail palm famous as the source of palm sugar (jaggery) and toddy wine tapped from its flower stalks. It carries large bipinnate fronds with jagged, fishtail leaflets on a single trunk and flowers once before dying. A bold tropical specimen. The Caryota genus is toxic to cats and dogs via insoluble calcium oxalates.

Cold limit: USDA 10-11 · RHS H1b (18-32°C)

Watch for — Scorched leaflet margins: Dry air browns the delicate fishtail tips. Maintain humidity above 50% and keep clear of radiators and draughty heat sources.

What wine fishtail palm's hardiness rating actually means

Wine Fishtail Palm 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 — 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). Wine Fishtail Palm has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

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

Wine Fishtail Palm hardiness — frequently asked questions

Is wine fishtail palm cold hardy?

Wine Fishtail Palm 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. Wine Fishtail Palm can only live outside year-round in genuinely frost-free climates (roughly USDA 10-11); everywhere else it is a houseplant that summers out at most.

What is the minimum temperature wine fishtail palm can survive?

What hardiness zone is wine fishtail palm?

Wine Fishtail Palm is rated USDA 10-11 and RHS H1b — Sub-tropical — a normal warm home is fine, but it cannot go outside in a cool season.

Can wine fishtail palm 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 wine fishtail palm 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.