Cold hardiness & minimum temperature

Is Darcy's Sage (Salvia darcyi)cold hardy? Hardiness zone & min temp

Also called Darcy's Sage, Darcy's Mexican Sage, Galeana Red Sage, Red Mountain Sage.

More about darcy's sage

About Darcy's Sage

Salvia darcyi · also called Darcy's Sage, Darcy's Mexican Sage · flowering

Salvia darcyi is a semi-evergreen perennial shrub native to rocky, limestone hillsides in the eastern Sierra Madre Occidental mountains of northeastern Mexico. It produces spectacular long racemes of bright coral-red to orange-red flowers from mid-summer through autumn, and is a favourite of hummingbirds. Hardy to USDA Zone 6a when kept in well-drained soil, it dies back to the roots after frost but regrows vigorously in spring. The Salvia genus is considered non-toxic to cats and dogs by the ASPCA.

Cold limit: USDA 6-10 · RHS H4 (-12 to 35°C)

Watch for — Root rot in wet or heavy soil: The most common cause of plant failure; plant in raised beds or sloping ground with excellent drainage, and avoid overwatering especially in autumn before frost.

What darcy's sage's hardiness rating actually means

Yes — darcy's sage is genuinely cold hardy. Rated RHS H4 and USDA 6-10, it lives outdoors all year and needs winter cold rather than protection from it. Its RHS rating of H4 means: Hardy in an average winter across much of the temperate world. On the US scale that maps to USDA 6-10 — 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 −10 to −5 °C. Darcy's Sage is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for darcy's sage as it gets too cold:

It tolerates winter lows to about −10 to −5 °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 darcy's sage go outside or overwinter — and where?

Plant it out within USDA 6-10 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 darcy's sage can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H4 figure above.

Darcy's Sage hardiness — frequently asked questions

Is darcy's sage cold hardy?

Yes — darcy's sage is genuinely cold hardy. Rated RHS H4 and USDA 6-10, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Darcy's Sage is hardy across USDA 6-10; 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 darcy's sage can survive?

Minimum survivable temperature is roughly about −10 to −5 °C. Darcy's Sage is built for winter — once established it takes hard frost and snow in its stride.

What hardiness zone is darcy's sage?

Darcy's Sage is rated USDA 6-10 and RHS H4 — Hardy in an average winter across much of the temperate world.

Can darcy's sage survive winter outside?

Plant it out within USDA 6-10 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 darcy's sage below its minimum temperature?

It tolerates winter lows to about −10 to −5 °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.