Cold hardiness & minimum temperature

Is Pink Pewter Dead Nettle (Lamium maculatum 'Pink Pewter')cold hardy? Hardiness zone & min temp

Also called Pink Pewter Dead Nettle, Pink Pewter Spotted Dead Nettle.

More about pink pewter dead nettle

About Pink Pewter Dead Nettle

Lamium maculatum 'Pink Pewter' · also called Pink Pewter Dead Nettle, Pink Pewter Spotted Dead Nettle · flowering

A refined, clump-forming ground cover with small, ruffled silver-grey leaves edged in a narrow green margin and soft salmon-pink flowers in late spring and early summer. Among the most ornamental Lamium cultivars, valued for its gentle colour combination. Performs best in cool, shaded positions with moisture-retentive soil.

Cold limit: USDA 3-8 · RHS H7 (-34°C to 29°C)

What pink pewter dead nettle's hardiness rating actually means

Yes — pink pewter dead nettle is genuinely cold hardy. Rated RHS H7 and USDA 3-8, 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 3-8 — 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. Pink Pewter Dead Nettle is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for pink pewter dead nettle 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 pink pewter dead nettle go outside or overwinter — and where?

Plant it out within USDA 3-8 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 pink pewter dead nettle can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H7 figure above.

Pink Pewter Dead Nettle hardiness — frequently asked questions

Is pink pewter dead nettle cold hardy?

Yes — pink pewter dead nettle is genuinely cold hardy. Rated RHS H7 and USDA 3-8, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Pink Pewter Dead Nettle is hardy across USDA 3-8; 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 pink pewter dead nettle can survive?

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

What hardiness zone is pink pewter dead nettle?

Pink Pewter Dead Nettle is rated USDA 3-8 and RHS H7 — Hardy in the severest European continental winters.

Can pink pewter dead nettle survive winter outside?

Plant it out within USDA 3-8 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 pink pewter dead nettle 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.