Cold hardiness & minimum temperature

Is Geranium 'Patricia' (Geranium 'Patricia')cold hardy? Hardiness zone & min temp

Also called Patricia cranesbill, Patricia hardy geranium.

More about geranium 'patricia'

About Geranium 'Patricia'

Geranium 'Patricia' · also called Patricia cranesbill, Patricia hardy geranium · flowering

'Patricia' is a vigorous hybrid hardy geranium (G. endressii x G. psilostemon) holding an RHS Award of Garden Merit, with large magenta-pink flowers boasting dramatic black centres and veining over a very long season from early summer to autumn. It forms a substantial mound of lobed foliage, thrives in sun or part shade and is deciduous.

Cold limit: USDA 4-8 (outdoor perennial) · RHS H6 (-23 to 26°C)

What geranium 'patricia''s hardiness rating actually means

Yes — geranium 'patricia' is genuinely cold hardy. Rated RHS H6 and USDA 4-8 (outdoor perennial), 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 4-8 (outdoor perennial) — 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. Geranium 'Patricia' is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for geranium 'patricia' 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 geranium 'patricia' go outside or overwinter — and where?

Plant it out within USDA 4-8 (outdoor perennial) 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 geranium 'patricia' can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H6 figure above.

Geranium 'Patricia' hardiness — frequently asked questions

Is geranium 'patricia' cold hardy?

Yes — geranium 'patricia' is genuinely cold hardy. Rated RHS H6 and USDA 4-8 (outdoor perennial), it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Geranium 'Patricia' is hardy across USDA 4-8 (outdoor perennial); 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 geranium 'patricia' can survive?

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

What hardiness zone is geranium 'patricia'?

Geranium 'Patricia' is rated USDA 4-8 (outdoor perennial) and RHS H6 — Hardy throughout the UK and northern Europe.

Can geranium 'patricia' survive winter outside?

Plant it out within USDA 4-8 (outdoor perennial) 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 geranium 'patricia' 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.