Cold hardiness & minimum temperature

Is Common Ginger (Zingiber officinale)cold hardy? Hardiness zone & min temp

Also called Common Ginger, Cooking Ginger, True Ginger, Stem Ginger, Canton Ginger.

More about common ginger

About Common Ginger

Zingiber officinale · also called Common Ginger, Cooking Ginger · edible

Zingiber officinale is the world's most widely used culinary and medicinal herb, a rhizomatous perennial native to humid, partly shaded tropical forests of Southeast Asia and now cultivated globally. It prefers two to five hours of dappled or morning sunlight, reliably moist organic soil, and warm temperatures; it will not tolerate frost. The single most important care fact is that it must be planted in rich, well-draining soil and never allowed to sit in waterlogged conditions, as the fleshy rhizomes rot rapidly. Ginger is widely regarded as non-toxic to cats and dogs, consistent with its long history of veterinary medicinal use, though large quantities may cause gastrointestinal upset.

Cold limit: USDA 9–12 · RHS H1a (20–30°C)

What common ginger's hardiness rating actually means

Common Ginger 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 9–12 — 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). Common Ginger has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

Concretely, for common ginger 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 common ginger 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 common ginger can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H1a figure above.

Common Ginger hardiness — frequently asked questions

Is common ginger cold hardy?

Common Ginger 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. Common Ginger can only live outside year-round in genuinely frost-free climates (roughly USDA 9–12); everywhere else it is a houseplant that summers out at most.

What is the minimum temperature common ginger can survive?

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

What hardiness zone is common ginger?

Common Ginger is rated USDA 9–12 and RHS H1a — Tropical — needs a heated room or greenhouse; no frost tolerance whatsoever.

Can common ginger 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 common ginger 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.