Cold hardiness & minimum temperature

Is Nymphaea 'Attraction' (Nymphaea 'Attraction')cold hardy? Hardiness zone & min temp

Also called Attraction Hardy Waterlily.

More about nymphaea 'attraction'

About Nymphaea 'Attraction'

Nymphaea 'Attraction' · also called Attraction Hardy Waterlily · flowering

Nymphaea 'Attraction' is a vigorous hardy waterlily prized for large cup-shaped blooms that open garnet-red and deepen with age, flecked white. A Marliac introduction for medium to large ponds, it needs full sun, still water 45-75 cm deep, and a heavy loam basket. Reliably winter-hardy outdoors where the rootstock stays below the ice line.

Cold limit: USDA 3-11 (hardy waterlily; rootstock must overwinter below ice) · RHS H5 (15-30°C)

What nymphaea 'attraction''s hardiness rating actually means

Yes — nymphaea 'attraction' is genuinely cold hardy. Rated RHS H5 and USDA 3-11 (hardy waterlily; rootstock must overwinter below ice), 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 3-11 (hardy waterlily; rootstock must overwinter below ice) — 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. Nymphaea 'Attraction' is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for nymphaea 'attraction' 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 nymphaea 'attraction' go outside or overwinter — and where?

Plant it out within USDA 3-11 (hardy waterlily; rootstock must overwinter below ice) 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 nymphaea 'attraction' can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H5 figure above.

Nymphaea 'Attraction' hardiness — frequently asked questions

Is nymphaea 'attraction' cold hardy?

Yes — nymphaea 'attraction' is genuinely cold hardy. Rated RHS H5 and USDA 3-11 (hardy waterlily; rootstock must overwinter below ice), it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Nymphaea 'Attraction' is hardy across USDA 3-11 (hardy waterlily; rootstock must overwinter below ice); 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 nymphaea 'attraction' can survive?

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

What hardiness zone is nymphaea 'attraction'?

Nymphaea 'Attraction' is rated USDA 3-11 (hardy waterlily; rootstock must overwinter below ice) and RHS H5 — Hardy in most of the UK and in cold winters.

Can nymphaea 'attraction' survive winter outside?

Plant it out within USDA 3-11 (hardy waterlily; rootstock must overwinter below ice) 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 nymphaea 'attraction' below its minimum temperature?

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.