Cold hardiness & minimum temperature

Is Dog Rose (Rosa canina)cold hardy? Hardiness zone & min temp

Also called Dog Rose, Common Briar, Wild Briar, Hip Rose.

More about dog rose

About Dog Rose

Rosa canina · also called Dog Rose, Common Briar · flowering

Rosa canina is a vigorous, deciduous scrambling wild rose native across Europe, western Asia and north Africa, producing arching, thorny canes with single, lightly fragrant pale-pink to white flowers in early summer followed by a prolific crop of orange-red hips through autumn and winter. Extremely tough and adaptable, it thrives in hedgerows, woodland edges and naturalistic gardens with little intervention, and its vitamin-C-rich hips are widely used for syrups, teas and preserves. The most important care point is to plant it where it has room to scramble, as it resents severe restriction. Rosa is listed as non-toxic to cats, dogs and horses by the ASPCA.

Cold limit: USDA 3-9 · RHS H7 (-20 to 30°C)

What dog rose's hardiness rating actually means

Yes — dog rose is genuinely cold hardy. Rated RHS H7 and USDA 3-9, it lives outdoors all year and needs winter cold rather than protection from it. Its RHS rating of H7 means: Hardy in the severest European continental winters. On the US scale that maps to USDA 3-9 — 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 below about −20 °C. Dog Rose is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for dog rose as it gets too cold:

It tolerates winter lows to about −20 °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 dog rose go outside or overwinter — and where?

Plant it out within USDA 3-9 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 dog rose can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H7 figure above.

Dog Rose hardiness — frequently asked questions

Is dog rose cold hardy?

Yes — dog rose is genuinely cold hardy. Rated RHS H7 and USDA 3-9, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Dog Rose is hardy across USDA 3-9; 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 dog rose can survive?

Minimum survivable temperature is roughly below about −20 °C. Dog Rose is built for winter — once established it takes hard frost and snow in its stride.

What hardiness zone is dog rose?

Dog Rose is rated USDA 3-9 and RHS H7 — Hardy in the severest European continental winters.

Can dog rose survive winter outside?

Plant it out within USDA 3-9 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 dog rose below its minimum temperature?

It tolerates winter lows to about −20 °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.