Cold hardiness & minimum temperature

Is Berggarten Sage (Salvia officinalis 'Berggarten')cold hardy? Hardiness zone & min temp

Also called Berggarten sage, broad-leaf sage, non-flowering sage.

More about berggarten sage

About Berggarten Sage

Salvia officinalis 'Berggarten' · also called Berggarten sage, broad-leaf sage · herb

Berggarten is a compact culinary sage selected for unusually broad, rounded silvery-grey leaves and a neat, bushy habit. It rarely flowers, putting its energy into dense aromatic foliage that holds well through the kitchen year. A sun-loving, drought-tolerant evergreen subshrub, it thrives in poor, sharply drained soil and resents wet, heavy ground.

Cold limit: USDA 5-9 (hardy evergreen subshrub outdoors) · RHS H5 (15-27°C)

Watch for — Root rot in wet soil: Wilting, blackening stems and collapse in heavy or overwatered ground. Plant in sharply drained soil, water sparingly, and avoid winter waterlogging.

What berggarten sage's hardiness rating actually means

Yes — berggarten sage is genuinely cold hardy. Rated RHS H5 and USDA 5-9 (hardy evergreen subshrub outdoors), 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 5-9 (hardy evergreen subshrub outdoors) — 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. Berggarten Sage is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for berggarten sage 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 berggarten sage go outside or overwinter — and where?

Plant it out within USDA 5-9 (hardy evergreen subshrub outdoors) 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 berggarten sage can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H5 figure above.

Berggarten Sage hardiness — frequently asked questions

Is berggarten sage cold hardy?

Yes — berggarten sage is genuinely cold hardy. Rated RHS H5 and USDA 5-9 (hardy evergreen subshrub outdoors), it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Berggarten Sage is hardy across USDA 5-9 (hardy evergreen subshrub outdoors); 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 berggarten sage can survive?

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

What hardiness zone is berggarten sage?

Berggarten Sage is rated USDA 5-9 (hardy evergreen subshrub outdoors) and RHS H5 — Hardy in most of the UK and in cold winters.

Can berggarten sage survive winter outside?

Plant it out within USDA 5-9 (hardy evergreen subshrub outdoors) 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 berggarten sage 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.