Cold hardiness & minimum temperature

Is Dandelion-leaved Sage (Salvia taraxacifolia)cold hardy? Hardiness zone & min temp

Also called Dandelion-leaved sage, Moroccan sage.

More about dandelion-leaved sage

About Dandelion-leaved Sage

Salvia taraxacifolia · also called Dandelion-leaved sage, Moroccan sage · herb

Salvia taraxacifolia is a short-lived perennial native to the Atlas Mountains of Morocco, growing in rocky limestone scrub at moderate elevations. It forms a rosette of deeply lobed, dandelion-like basal leaves topped by upright spikes of pale pink to white flowers. Full sun and extremely well-drained, gritty soil are essential — waterlogged roots in winter will kill the plant rapidly. ASPCA does not list this species individually; as a Salvia it may contain volatile ketones similar to S. officinalis and should be considered mildly toxic to cats and dogs.

Cold limit: USDA 7-10 · RHS H5 (−10 °C to 30 °C)

Watch for — Crown and root rot: The most common cause of death; triggered by waterlogged soil or winter wetness around the rosette. Ensure near-perfect drainage and consider covering with a cloche in wet winters.

What dandelion-leaved sage's hardiness rating actually means

Yes — dandelion-leaved sage is genuinely cold hardy. Rated RHS H5 and USDA 7-10, 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 7-10 — 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 −15 to −10 °C. Dandelion-leaved Sage is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for dandelion-leaved 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 dandelion-leaved sage go outside or overwinter — and where?

Plant it out within USDA 7-10 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 dandelion-leaved sage can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H5 figure above.

Frost protection for borderline dandelion-leaved sage

Dandelion-leaved Sage is right on a hardiness edge in many gardens, so if you are pushing it, these measures buy it the margin it needs:

At the cold edge of its range, mulch the root zone in late autumn to buffer the deepest freezes.
Protect container specimens — pots freeze through far faster than open ground, costing roughly a zone of hardiness.
Shelter new growth from late spring frosts with fleece if a hard night is forecast.

Dandelion-leaved Sage hardiness — frequently asked questions

Is dandelion-leaved sage cold hardy?

Yes — dandelion-leaved sage is genuinely cold hardy. Rated RHS H5 and USDA 7-10, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Dandelion-leaved Sage is hardy across USDA 7-10; 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 dandelion-leaved sage can survive?

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

What hardiness zone is dandelion-leaved sage?

Dandelion-leaved Sage is rated USDA 7-10 and RHS H5 — Hardy in most of the UK and in cold winters.

Can dandelion-leaved sage survive winter outside?

Plant it out within USDA 7-10 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.

How do I protect dandelion-leaved sage from frost?

At the cold edge of its range, mulch the root zone in late autumn to buffer the deepest freezes. Protect container specimens — pots freeze through far faster than open ground, costing roughly a zone of hardiness. Shelter new growth from late spring frosts with fleece if a hard night is forecast.