Cold hardiness & minimum temperature

Is Erythronium 'Pagoda' (Erythronium 'Pagoda')cold hardy? Hardiness zone & min temp

Also called Pagoda dogtooth violet, yellow trout lily hybrid, fawn lily.

More about erythronium 'pagoda'

About Erythronium 'Pagoda'

Erythronium 'Pagoda' · also called Pagoda dogtooth violet, yellow trout lily hybrid · flowering

Erythronium 'Pagoda' is a vigorous woodland bulb prized for nodding, soft sulphur-yellow flowers with reflexed petals carried above glossy, lightly mottled leaves in mid-spring. One of the easiest dogtooth violets, it naturalises in cool, humus-rich shade beneath deciduous trees. Plant the long tuber-like bulbs deep in autumn and keep them from drying out.

Cold limit: USDA 4-8 · RHS H6 (-29 to 21°C)

What erythronium 'pagoda''s hardiness rating actually means

Yes — erythronium 'pagoda' is genuinely cold hardy. Rated RHS H6 and USDA 4-8, 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 4-8 — 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. Erythronium 'Pagoda' is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for erythronium 'pagoda' 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 erythronium 'pagoda' go outside or overwinter — and where?

Plant it out within USDA 4-8 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 erythronium 'pagoda' can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H6 figure above.

Erythronium 'Pagoda' hardiness — frequently asked questions

Is erythronium 'pagoda' cold hardy?

Yes — erythronium 'pagoda' is genuinely cold hardy. Rated RHS H6 and USDA 4-8, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Erythronium 'Pagoda' is hardy across USDA 4-8; 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 erythronium 'pagoda' can survive?

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

What hardiness zone is erythronium 'pagoda'?

Erythronium 'Pagoda' is rated USDA 4-8 and RHS H6 — Hardy throughout the UK and northern Europe.

Can erythronium 'pagoda' survive winter outside?

Plant it out within USDA 4-8 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 erythronium 'pagoda' 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.