Cold hardiness & minimum temperature

Is Daffodil (Narcissus pseudonarcissus)cold hardy? Hardiness zone & min temp

Also called Daffodil, Wild Daffodil, Lent Lily, Common Daffodil.

More about daffodil

About Daffodil

Narcissus pseudonarcissus · also called Daffodil, Wild Daffodil · flowering

Narcissus pseudonarcissus is the native European wild daffodil, bearing solitary pale-yellow perianth segments around a deep golden-yellow trumpet in early-to-mid spring. More delicate than modern hybrids, it naturalises beautifully in short grass, woodland edges, and meadows. Fully hardy, long-lived, and self-sustaining once established in suitable conditions.

Cold limit: USDA 3–9 · RHS H7 (-20°C to 20°C (optimal growth: 5–15°C))

What daffodil's hardiness rating actually means

Yes — daffodil is genuinely cold hardy. Rated RHS H7 and USDA 3–9, it lives outdoors all year and needs winter cold rather than protection from it. Its RHS rating of H7 means: Hardy in the severest European continental winters. On the US scale that maps to USDA 3–9 — 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 below about −20 °C. Daffodil is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for daffodil as it gets too cold:

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

Plant it out within USDA 3–9 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 daffodil can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H7 figure above.

Daffodil hardiness — frequently asked questions

Is daffodil cold hardy?

Yes — daffodil is genuinely cold hardy. Rated RHS H7 and USDA 3–9, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Daffodil is hardy across USDA 3–9; 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 daffodil can survive?

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

What hardiness zone is daffodil?

Daffodil is rated USDA 3–9 and RHS H7 — Hardy in the severest European continental winters.

Can daffodil survive winter outside?

Plant it out within USDA 3–9 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 daffodil below its minimum temperature?

It tolerates winter lows to about −20 °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.