Cold hardiness & minimum temperature

Is Pawpaw 'Overleese' (Asimina triloba 'Overleese')cold hardy? Hardiness zone & min temp

Also called Overleese pawpaw.

More about pawpaw 'overleese'

About Pawpaw 'Overleese'

Asimina triloba 'Overleese' · also called Overleese pawpaw · edible

'Overleese' is a classic heirloom pawpaw cultivar prized for large, well-flavoured fruit with few seeds and high yields. A hardy deciduous understorey tree of eastern North America, it fruits in temperate gardens but needs a second, different cultivar for cross-pollination. Young trees prefer light shade; mature trees crop best in full sun on deep, moist, well-drained soil.

Cold limit: USDA 5-8 · RHS H5 (-25 to 30°C)

What pawpaw 'overleese''s hardiness rating actually means

Yes — pawpaw 'overleese' is genuinely cold hardy. Rated RHS H5 and USDA 5-8, 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 5-8 — 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 −15 to −10 °C. Pawpaw 'Overleese' is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for pawpaw 'overleese' 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 pawpaw 'overleese' go outside or overwinter — and where?

Plant it out within USDA 5-8 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 pawpaw 'overleese' can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H5 figure above.

Pawpaw 'Overleese' hardiness — frequently asked questions

Is pawpaw 'overleese' cold hardy?

Yes — pawpaw 'overleese' is genuinely cold hardy. Rated RHS H5 and USDA 5-8, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Pawpaw 'Overleese' is hardy across USDA 5-8; 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 pawpaw 'overleese' can survive?

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

What hardiness zone is pawpaw 'overleese'?

Pawpaw 'Overleese' is rated USDA 5-8 and RHS H5 — Hardy in most of the UK and in cold winters.

Can pawpaw 'overleese' survive winter outside?

Plant it out within USDA 5-8 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 pawpaw 'overleese' 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.