Cold hardiness & minimum temperature

Is Raspberry Splash Pulmonaria (Pulmonaria 'Raspberry Splash')cold hardy? Hardiness zone & min temp

Also called Raspberry Splash lungwort, pink-flowered pulmonaria.

More about raspberry splash pulmonaria

About Raspberry Splash Pulmonaria

Pulmonaria 'Raspberry Splash' · also called Raspberry Splash lungwort, pink-flowered pulmonaria · flowering

'Raspberry Splash' is an upright lungwort with narrow, silver-spotted green leaves and early spring flowers in vivid raspberry-pink to coral that contrast handsomely with the foliage. It forms tidy clumps for moist, shady borders and woodland edges. The genus isn't individually ASPCA-listed, so treat it cautiously around pets.

Cold limit: USDA 4-8 · RHS H7 (-28 to 24°C)

What raspberry splash pulmonaria's hardiness rating actually means

Yes — raspberry splash pulmonaria is genuinely cold hardy. Rated RHS H7 and USDA 4-8, 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 4-8 — 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. Raspberry Splash Pulmonaria is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for raspberry splash pulmonaria 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 raspberry splash pulmonaria go outside or overwinter — and where?

Plant it out within USDA 4-8 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 raspberry splash pulmonaria can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H7 figure above.

Raspberry Splash Pulmonaria hardiness — frequently asked questions

Is raspberry splash pulmonaria cold hardy?

Yes — raspberry splash pulmonaria is genuinely cold hardy. Rated RHS H7 and USDA 4-8, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Raspberry Splash Pulmonaria is hardy across USDA 4-8; 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 raspberry splash pulmonaria can survive?

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

What hardiness zone is raspberry splash pulmonaria?

Raspberry Splash Pulmonaria is rated USDA 4-8 and RHS H7 — Hardy in the severest European continental winters.

Can raspberry splash pulmonaria survive winter outside?

Plant it out within USDA 4-8 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 raspberry splash pulmonaria 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.