Cold hardiness & minimum temperature

Is New Dawn Rose (Rosa 'New Dawn')cold hardy? Hardiness zone & min temp

Also called New Dawn, Everblooming Dr. W. Van Fleet.

More about new dawn rose

About New Dawn Rose

Rosa 'New Dawn' · also called New Dawn, Everblooming Dr. W. Van Fleet · flowering

New Dawn is a vigorous, repeat-flowering climbing rose carrying clusters of sweetly scented, semi-double shell-pink blooms from early summer to autumn. Exceptionally tough and disease-resistant, it tolerates poorer soils and partial shade better than most climbers. Train it onto walls, arches or pergolas in full sun to part shade, and prune lightly in late winter.

Cold limit: USDA 5-9 (outdoor climbing rose) · RHS H6 (-29 to 30°C)

Watch for — Sparse flowering on old wood: Left unpruned, it builds bare leggy bases with bloom only at the top. Tie canes horizontally and prune side shoots back in late winter to spread flowering down the plant.

What new dawn rose's hardiness rating actually means

Yes — new dawn rose is genuinely cold hardy. Rated RHS H6 and USDA 5-9 (outdoor climbing rose), it lives outdoors all year and needs winter cold rather than protection from it. Its RHS rating of H6 means: Hardy throughout the UK and northern Europe. On the US scale that maps to USDA 5-9 (outdoor climbing rose) — 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 −20 to −15 °C. New Dawn Rose is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for new dawn rose as it gets too cold:

It tolerates winter lows to about −20 to −15 °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 new dawn rose go outside or overwinter — and where?

Plant it out within USDA 5-9 (outdoor climbing rose) 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 new dawn rose can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H6 figure above.

New Dawn Rose hardiness — frequently asked questions

Is new dawn rose cold hardy?

Yes — new dawn rose is genuinely cold hardy. Rated RHS H6 and USDA 5-9 (outdoor climbing rose), it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. New Dawn Rose is hardy across USDA 5-9 (outdoor climbing rose); 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 new dawn rose can survive?

Minimum survivable temperature is roughly about −20 to −15 °C. New Dawn Rose is built for winter — once established it takes hard frost and snow in its stride.

What hardiness zone is new dawn rose?

New Dawn Rose is rated USDA 5-9 (outdoor climbing rose) and RHS H6 — Hardy throughout the UK and northern Europe.

Can new dawn rose survive winter outside?

Plant it out within USDA 5-9 (outdoor climbing rose) 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 new dawn rose below its minimum temperature?

It tolerates winter lows to about −20 to −15 °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.