Cold hardiness & minimum temperature

Is Chinese Wild Ginger (Asarum splendens)cold hardy? Hardiness zone & min temp

Also called Chinese Wild Ginger, Splendid Wild Ginger.

More about chinese wild ginger

About Chinese Wild Ginger

Asarum splendens · also called Chinese Wild Ginger, Splendid Wild Ginger · flowering

Chinese Wild Ginger is a semi-evergreen to evergreen woodland perennial with striking silver-mottled, arrow-shaped leaves that provide year-round ornamental interest. Native to China, it is more tender than its North American relative but equally shade-loving. Small, dark-purple flowers appear at soil level in spring beneath the handsome foliage.

Cold limit: USDA 6-9 · RHS H5 (-5°C to 28°C)

Watch for — Frost damage to foliage: In USDA zones 6–7, severe frosts can brown or kill evergreen leaves. Plants typically re-sprout from rhizomes in spring. Apply a dry winter mulch of straw or shredded leaves for protection in colder zones.

What chinese wild ginger's hardiness rating actually means

Yes — chinese wild ginger is genuinely cold hardy. Rated RHS H5 and USDA 6-9, it lives outdoors all year and needs winter cold rather than protection from it. Its RHS rating of H5 means: Hardy in most of the UK and in cold winters. On the US scale that maps to USDA 6-9 — 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 −15 to −10 °C. Chinese Wild Ginger is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for chinese wild ginger as it gets too cold:

It tolerates winter lows to about −15 to −10 °C once established.
Below its rated zone, the visible damage is browned or blackened top growth and, in the worst case, a killed crown or root.
First-year, newly planted, or container-grown specimens are noticeably less hardy than established garden plants — the roots are exposed.

Can chinese wild ginger go outside or overwinter — and where?

Plant it out within USDA 6-9 and it overwinters with little or no help.
It does not want to come indoors — a warm winter room actually weakens a hardy plant by denying it dormancy.
The real risks in its range are waterlogging, wind-rock on young plants, and a late hard frost on new growth — not ordinary winter cold.

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 chinese wild ginger can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H5 figure above.

Chinese Wild Ginger hardiness — frequently asked questions

Is chinese wild ginger cold hardy?

Yes — chinese wild ginger is genuinely cold hardy. Rated RHS H5 and USDA 6-9, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Chinese Wild Ginger is hardy across USDA 6-9; it belongs in the ground or a frost-proof container, not on a windowsill, and many types actively need a cold winter to perform.

What is the minimum temperature chinese wild ginger can survive?

Minimum survivable temperature is roughly about −15 to −10 °C. Chinese Wild Ginger is built for winter — once established it takes hard frost and snow in its stride.

What hardiness zone is chinese wild ginger?

Chinese Wild Ginger is rated USDA 6-9 and RHS H5 — Hardy in most of the UK and in cold winters.

Can chinese wild ginger survive winter outside?

Plant it out within USDA 6-9 and it overwinters with little or no help. It does not want to come indoors — a warm winter room actually weakens a hardy plant by denying it dormancy. The real risks in its range are waterlogging, wind-rock on young plants, and a late hard frost on new growth — not ordinary winter cold.

What happens to chinese wild ginger below its minimum temperature?

It tolerates winter lows to about −15 to −10 °C once established. Below its rated zone, the visible damage is browned or blackened top growth and, in the worst case, a killed crown or root. First-year, newly planted, or container-grown specimens are noticeably less hardy than established garden plants — the roots are exposed.