Cold hardiness & minimum temperature

Is Salvia yangii (Salvia yangii)cold hardy? Hardiness zone & min temp

Also called Russian sage, Perovskia.

More about salvia yangii

About Salvia yangii

Salvia yangii · also called Russian sage, Perovskia · flowering

Russian sage, recently reclassified from Perovskia to Salvia yangii, is a woody-based subshrub with silvery, finely cut aromatic foliage and an airy haze of lavender-blue flowers in late summer. Tough and drought-proof, it thrives in hot, dry, sunny sites with sharp drainage and is invaluable for late-season colour and pollinators.

Cold limit: USDA 4-9 · RHS H5 (18-30°C in active growth, hardy to about -25°C dormant)

Watch for — Root rot in wet soil: Its single biggest threat is heavy, waterlogged ground, especially in winter. Plant in very sharply drained soil.

What salvia yangii's hardiness rating actually means

Yes — salvia yangii 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. Salvia yangii is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for salvia yangii 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 salvia yangii 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 salvia yangii can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H5 figure above.

Salvia yangii hardiness — frequently asked questions

Is salvia yangii cold hardy?

Yes — salvia yangii 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. Salvia yangii 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 salvia yangii can survive?

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

What hardiness zone is salvia yangii?

Salvia yangii is rated USDA 4-9 and RHS H5 — Hardy in most of the UK and in cold winters.

Can salvia yangii 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 salvia yangii 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.