Cold hardiness & minimum temperature

Is Poet's Narcissus (Narcissus poeticus)cold hardy? Hardiness zone & min temp

Also called Pheasant's Eye, Poet's Daffodil, Nargis, Pinkster Lily.

More about poet's narcissus

About Poet's Narcissus

Narcissus poeticus · also called Pheasant's Eye, Poet's Daffodil · flowering

Narcissus poeticus is a fragrant, late-season daffodil bearing white perianth petals with a tiny red-rimmed yellow cup. Native to southern European meadows, it naturalises well in grass. All parts are toxic to pets and humans due to lycorine and calcium oxalate crystals — keep away from dogs and cats.

Cold limit: USDA 4-9 · RHS H6 (2-20°C)

Watch for — Grey mould (Botrytis): Affects foliage in wet, cold springs. Improve airflow; remove dead or dying leaves promptly; avoid overhead watering.

What poet's narcissus's hardiness rating actually means

Yes — poet's narcissus is genuinely cold hardy. Rated RHS H6 and USDA 4-9, 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 4-9 — 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 about −20 to −15 °C. Poet's Narcissus is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for poet's narcissus 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 poet's narcissus go outside or overwinter — and where?

Plant it out within USDA 4-9 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 poet's narcissus can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H6 figure above.

Poet's Narcissus hardiness — frequently asked questions

Is poet's narcissus cold hardy?

Yes — poet's narcissus is genuinely cold hardy. Rated RHS H6 and USDA 4-9, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Poet's Narcissus is hardy across USDA 4-9; 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 poet's narcissus can survive?

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

What hardiness zone is poet's narcissus?

Poet's Narcissus is rated USDA 4-9 and RHS H6 — Hardy throughout the UK and northern Europe.

Can poet's narcissus survive winter outside?

Plant it out within USDA 4-9 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 poet's narcissus 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.