Cold hardiness & minimum temperature

Is Coffee Plant (Coffea arabica)cold hardy? Hardiness zone & min temp

Also called Coffee plant, Arabian coffee, Arabica coffee, Coffee tree.

More about coffee plant

About Coffee Plant

Coffea arabica · also called Coffee plant, Arabian coffee · tropical

The coffee plant (Coffea arabica) is a glossy-leaved tropical evergreen shrub grown indoors for its handsome foliage and, eventually, fragrant white flowers and red berries. Its one defining care need is consistent moisture in bright but indirect light: it sulks and drops leaves if the rootball dries out or temperatures fall below about 13°C.

Cold limit: USDA 10-11 · RHS H1a (min 15°C; greenhouse or indoors year-round in the UK) (18-27°C)

Watch for — Leaf drop: Triggered by cold (below about 13°C), draughts or sudden temperature swings. Keep the plant warm and away from cold windows and doorways, especially in winter.

What coffee plant's hardiness rating actually means

Coffee Plant 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 H1a means: Tropical — needs a heated room or greenhouse; no frost tolerance whatsoever. 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 above about 15 °C (warm, never cold). Coffee Plant has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

Concretely, for coffee plant as it gets too cold:

Below about above about 15 °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 coffee plant go outside or overwinter — and where?

It can holiday outdoors in summer once nights are reliably above above 15 °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 coffee plant can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H1a figure above.

Coffee Plant hardiness — frequently asked questions

Is coffee plant cold hardy?

Coffee Plant 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. Coffee Plant 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 coffee plant can survive?

Minimum survivable temperature is roughly above about 15 °C (warm, never cold). Coffee Plant has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

What hardiness zone is coffee plant?

Coffee Plant is rated USDA 10-11 and RHS H1a — Tropical — needs a heated room or greenhouse; no frost tolerance whatsoever.

Can coffee plant survive winter outside?

It can holiday outdoors in summer once nights are reliably above above 15 °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 coffee plant below its minimum temperature?

Below about above about 15 °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.