Cold hardiness & minimum temperature

Is Snowberry Creeper (Gaultheria depressa)cold hardy? Hardiness zone & min temp

Also called Snowberry creeper, Mountain snowberry, Alpine waxberry.

More about snowberry creeper

About Snowberry Creeper

Gaultheria depressa · also called Snowberry creeper, Mountain snowberry · flowering

A mat-forming, ground-hugging alpine shrub native to rocky New Zealand and Tasmanian mountainsides, rarely exceeding 10 cm in height. Its interlacing evergreen stems produce tiny white flowers and attractive fleshy white berries. Best suited to rock gardens and alpine troughs in cool, moist, acidic conditions.

Cold limit: USDA 8–10 · RHS H4 (-5°C to 18°C)

Watch for — Root rot in poorly drained soils: The species is short-lived in heavy, waterlogged soils. Grow in raised alpine beds or containers with a deep grit layer at the base to ensure rapid drainage, particularly in wet British winters.

What snowberry creeper's hardiness rating actually means

Yes — snowberry creeper is genuinely cold hardy. Rated RHS H4 and USDA 8–10, it lives outdoors all year and needs winter cold rather than protection from it. Its RHS rating of H4 means: Hardy in an average winter across much of the temperate world. On the US scale that maps to USDA 8–10 — 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 to −5 °C. Snowberry Creeper is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for snowberry creeper as it gets too cold:

It tolerates winter lows to about −10 to −5 °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 snowberry creeper go outside or overwinter — and where?

Plant it out within USDA 8–10 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 snowberry creeper can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H4 figure above.

Snowberry Creeper hardiness — frequently asked questions

Is snowberry creeper cold hardy?

Yes — snowberry creeper is genuinely cold hardy. Rated RHS H4 and USDA 8–10, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Snowberry Creeper is hardy across USDA 8–10; 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 snowberry creeper can survive?

Minimum survivable temperature is roughly about −10 to −5 °C. Snowberry Creeper is built for winter — once established it takes hard frost and snow in its stride.

What hardiness zone is snowberry creeper?

Snowberry Creeper is rated USDA 8–10 and RHS H4 — Hardy in an average winter across much of the temperate world.

Can snowberry creeper survive winter outside?

Plant it out within USDA 8–10 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 snowberry creeper below its minimum temperature?

It tolerates winter lows to about −10 to −5 °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.