Cold hardiness & minimum temperature

Is Shining Cinquefoil (Potentilla nitida)cold hardy? Hardiness zone & min temp

Also called Shining Cinquefoil, Pink Rock Cinquefoil.

More about shining cinquefoil

About Shining Cinquefoil

Potentilla nitida · also called Shining Cinquefoil, Pink Rock Cinquefoil · flowering

Potentilla nitida is a specialist high-alpine cinquefoil from the Dolomites and southern Alps, forming tight, silver-silky cushions studded with large, clear pink to deep rose flowers in summer. Its intensely silvered, palmate leaves are covered in silky appressed hairs that give the species its name. One of the most sought-after alpine species for exhibition and specialist troughs.

Cold limit: USDA 4–7 · RHS H7 (-20–20°C)

Watch for — Cushion rot: The primary cultivation challenge. The tight, dense cushion traps moisture in humid or waterlogged conditions, leading to rapid fungal or bacterial rot at the centre of the plant. An alpine house, vertical crevice planting, and winter overhead protection from rain are the most effective preventative measures.

What shining cinquefoil's hardiness rating actually means

Yes — shining cinquefoil is genuinely cold hardy. Rated RHS H7 and USDA 4–7, 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 4–7 — 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. Shining Cinquefoil is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for shining cinquefoil 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 shining cinquefoil go outside or overwinter — and where?

Plant it out within USDA 4–7 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 shining cinquefoil can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H7 figure above.

Shining Cinquefoil hardiness — frequently asked questions

Is shining cinquefoil cold hardy?

Yes — shining cinquefoil is genuinely cold hardy. Rated RHS H7 and USDA 4–7, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Shining Cinquefoil is hardy across USDA 4–7; 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 shining cinquefoil can survive?

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

What hardiness zone is shining cinquefoil?

Shining Cinquefoil is rated USDA 4–7 and RHS H7 — Hardy in the severest European continental winters.

Can shining cinquefoil survive winter outside?

Plant it out within USDA 4–7 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 shining cinquefoil 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.