Cold hardiness & minimum temperature

Is Featherleaf Rodgersia 'Superba' (Rodgersia pinnata)cold hardy? Hardiness zone & min temp

Also called Featherleaf Rodgersia, Rodgersia, Pinnate Rodgersia.

More about featherleaf rodgersia 'superba'

About Featherleaf Rodgersia 'Superba'

Rodgersia pinnata · also called Featherleaf Rodgersia, Rodgersia · flowering

Rodgersia pinnata 'Superba' is a bold, moisture-loving perennial prized for its large, bronze-tinted pinnate leaves and tall plumes of pink flowers in summer. It thrives in damp, partly shaded borders and woodland gardens. Not listed as toxic to pets by the ASPCA, though its large leaves may cause mild stomach upset if eaten in quantity.

Cold limit: USDA 5-8 · RHS H5 (5-25°C)

What featherleaf rodgersia 'superba''s hardiness rating actually means

Yes — featherleaf rodgersia 'superba' is genuinely cold hardy. Rated RHS H5 and USDA 5-8, 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 5-8 — 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 about −15 to −10 °C. Featherleaf Rodgersia 'Superba' is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for featherleaf rodgersia 'superba' 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 featherleaf rodgersia 'superba' go outside or overwinter — and where?

Plant it out within USDA 5-8 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 featherleaf rodgersia 'superba' can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H5 figure above.

Featherleaf Rodgersia 'Superba' hardiness — frequently asked questions

Is featherleaf rodgersia 'superba' cold hardy?

Yes — featherleaf rodgersia 'superba' is genuinely cold hardy. Rated RHS H5 and USDA 5-8, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Featherleaf Rodgersia 'Superba' is hardy across USDA 5-8; 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 featherleaf rodgersia 'superba' can survive?

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

What hardiness zone is featherleaf rodgersia 'superba'?

Featherleaf Rodgersia 'Superba' is rated USDA 5-8 and RHS H5 — Hardy in most of the UK and in cold winters.

Can featherleaf rodgersia 'superba' survive winter outside?

Plant it out within USDA 5-8 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 featherleaf rodgersia 'superba' 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.