Cold hardiness & minimum temperature

Is Daphne cneorum (Daphne cneorum)cold hardy? Hardiness zone & min temp

Also called garland daphne, rose daphne.

More about daphne cneorum

About Daphne cneorum

Daphne cneorum · also called garland daphne, rose daphne · flowering

Garland daphne is a low, spreading evergreen ideal for rock gardens and bank edges, forming trailing mats of small dark-green leaves. In late spring it is smothered in clusters of intensely fragrant rose-pink flowers. Hardy but exacting about drainage and resentful of disturbance, it rewards patience. All parts are toxic to pets and people if eaten.

Cold limit: USDA 4-7 · RHS H6 (-25 to 25°C)

What daphne cneorum's hardiness rating actually means

Yes — daphne cneorum is genuinely cold hardy. Rated RHS H6 and USDA 4-7, it lives outdoors all year and needs winter cold rather than protection from it. Its RHS rating of H6 means: Hardy throughout the UK and northern Europe. On the US scale that maps to USDA 4-7 — 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 −20 to −15 °C. Daphne cneorum is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for daphne cneorum as it gets too cold:

It tolerates winter lows to about −20 to −15 °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 daphne cneorum go outside or overwinter — and where?

Plant it out within USDA 4-7 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 daphne cneorum can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H6 figure above.

Daphne cneorum hardiness — frequently asked questions

Is daphne cneorum cold hardy?

Yes — daphne cneorum is genuinely cold hardy. Rated RHS H6 and USDA 4-7, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Daphne cneorum is hardy across USDA 4-7; 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 daphne cneorum can survive?

Minimum survivable temperature is roughly about −20 to −15 °C. Daphne cneorum is built for winter — once established it takes hard frost and snow in its stride.

What hardiness zone is daphne cneorum?

Daphne cneorum is rated USDA 4-7 and RHS H6 — Hardy throughout the UK and northern Europe.

Can daphne cneorum survive winter outside?

Plant it out within USDA 4-7 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 daphne cneorum below its minimum temperature?

It tolerates winter lows to about −20 to −15 °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.