Cold hardiness & minimum temperature

Is Paul's Glory Hosta (Hosta 'Paul's Glory')cold hardy? Hardiness zone & min temp

Also called Paul's Glory hosta, gold-centred blue-margined hosta.

More about paul's glory hosta

About Paul's Glory Hosta

Hosta 'Paul's Glory' · also called Paul's Glory hosta, gold-centred blue-margined hosta · flowering

Paul's Glory is a striking medium-large hosta, a 1999 Hosta of the Year, whose leaves open chartreuse and brighten to rich gold centres framed by wide blue-green margins. The contrast intensifies through the season. Forming a generous mound, it carries lavender flowers on tall scapes in midsummer above the colourful foliage.

Cold limit: USDA 3-9 · RHS H7 (-29 to 24°C)

What paul's glory hosta's hardiness rating actually means

Yes — paul's glory hosta 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. Paul's Glory Hosta is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for paul's glory hosta 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 paul's glory hosta 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 paul's glory hosta can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H7 figure above.

Paul's Glory Hosta hardiness — frequently asked questions

Is paul's glory hosta cold hardy?

Yes — paul's glory hosta 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. Paul's Glory Hosta 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 paul's glory hosta can survive?

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

What hardiness zone is paul's glory hosta?

Paul's Glory Hosta is rated USDA 3-9 and RHS H7 — Hardy in the severest European continental winters.

Can paul's glory hosta 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 paul's glory hosta 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.