Cold hardiness & minimum temperature

Is Pink Penny Cranesbill (Geranium 'Pink Penny')cold hardy? Hardiness zone & min temp

Also called Pink Penny Cranesbill, Hardy Geranium 'Pink Penny'.

More about pink penny cranesbill

About Pink Penny Cranesbill

Geranium 'Pink Penny' · also called Pink Penny Cranesbill, Hardy Geranium 'Pink Penny' · flowering

Geranium 'Pink Penny' (PP17656) is a compact, semi-evergreen cranesbill that originated as a mutation of Geranium 'Jolly Bee', selected by Dutch nurseryman Marco van Noort. It bears a near-continuous flush of bright pink, saucer-shaped flowers with a paler centre and dark purple veins and anthers from early summer until the first hard frosts, and the sterile blooms are self-cleaning so no deadheading is required. The single most critical care requirement is a well-drained site in sun, as the plant dislikes sitting in wet soil over winter. True cranesbill Geranium species are not listed as toxic by the ASPCA (which classifies Pelargonium as the toxic 'Geranium') and are widely considered pet-safe.

Cold limit: USDA 4-9 · RHS H5 (-15 to 30°C)

What pink penny cranesbill's hardiness rating actually means

Yes — pink penny cranesbill is genuinely cold hardy. Rated RHS H5 and USDA 4-9, it lives outdoors all year and needs winter cold rather than protection from it. Its RHS rating of H5 means: Hardy in most of the UK and in cold winters. On the US scale that maps to USDA 4-9 — 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 about −15 to −10 °C. Pink Penny Cranesbill is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for pink penny cranesbill as it gets too cold:

It tolerates winter lows to about −15 to −10 °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 penny cranesbill go outside or overwinter — and where?

Plant it out within USDA 4-9 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 pink penny cranesbill can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H5 figure above.

Pink Penny Cranesbill hardiness — frequently asked questions

Is pink penny cranesbill cold hardy?

Yes — pink penny cranesbill is genuinely cold hardy. Rated RHS H5 and USDA 4-9, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Pink Penny Cranesbill is hardy across USDA 4-9; 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 pink penny cranesbill can survive?

Minimum survivable temperature is roughly about −15 to −10 °C. Pink Penny Cranesbill is built for winter — once established it takes hard frost and snow in its stride.

What hardiness zone is pink penny cranesbill?

Pink Penny Cranesbill is rated USDA 4-9 and RHS H5 — Hardy in most of the UK and in cold winters.

Can pink penny cranesbill survive winter outside?

Plant it out within USDA 4-9 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 pink penny cranesbill below its minimum temperature?

It tolerates winter lows to about −15 to −10 °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.