Cold hardiness & minimum temperature

Is Physocarpus opulifolius 'Coppertina' (Physocarpus opulifolius 'Mindia' (Coppertina))cold hardy? Hardiness zone & min temp

Also called Coppertina ninebark, copper ninebark.

More about physocarpus opulifolius 'coppertina'

About Physocarpus opulifolius 'Coppertina'

Physocarpus opulifolius 'Mindia' (Coppertina) · also called Coppertina ninebark, copper ninebark · flowering

'Coppertina' is a colour-shifting ninebark whose new leaves emerge bright copper-orange before maturing to rich red. Pinkish-white button flowers in early summer give way to red fruit. A super-hardy, adaptable native shrub with peeling bark, it delivers its best colour contrast in full sun on most soils and tolerates tough sites with ease.

Cold limit: USDA 3-7 · RHS H7 (-37 to 32°C)

Watch for — Open, woody base: Older shrubs become leggy and bare low down. Renew by cutting the oldest third of stems to the ground in late winter.

What physocarpus opulifolius 'coppertina''s hardiness rating actually means

Yes — physocarpus opulifolius 'coppertina' is genuinely cold hardy. Rated RHS H7 and USDA 3-7, 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 3-7 — 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. Physocarpus opulifolius 'Coppertina' is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for physocarpus opulifolius 'coppertina' 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 physocarpus opulifolius 'coppertina' go outside or overwinter — and where?

Plant it out within USDA 3-7 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 physocarpus opulifolius 'coppertina' can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H7 figure above.

Physocarpus opulifolius 'Coppertina' hardiness — frequently asked questions

Is physocarpus opulifolius 'coppertina' cold hardy?

Yes — physocarpus opulifolius 'coppertina' is genuinely cold hardy. Rated RHS H7 and USDA 3-7, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Physocarpus opulifolius 'Coppertina' is hardy across USDA 3-7; 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 physocarpus opulifolius 'coppertina' can survive?

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

What hardiness zone is physocarpus opulifolius 'coppertina'?

Physocarpus opulifolius 'Coppertina' is rated USDA 3-7 and RHS H7 — Hardy in the severest European continental winters.

Can physocarpus opulifolius 'coppertina' survive winter outside?

Plant it out within USDA 3-7 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 physocarpus opulifolius 'coppertina' 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.