Cold hardiness & minimum temperature

Is Dogwood 'Eddie's White Wonder' (Cornus 'Eddie's White Wonder')cold hardy? Hardiness zone & min temp

Also called Eddie's White Wonder dogwood.

More about dogwood 'eddie's white wonder'

About Dogwood 'Eddie's White Wonder'

Cornus 'Eddie's White Wonder' · also called Eddie's White Wonder dogwood · flowering

'Eddie's White Wonder' is a hybrid flowering dogwood (Cornus nuttallii × florida) and holder of the RHS Award of Garden Merit. In late spring it smothers itself in large, rounded, pure-white bracts, followed by red berries and rich autumn leaf colour. More vigorous and free-flowering than either parent, it makes an outstanding small specimen tree for a sheltered spot.

Cold limit: USDA 6-8 · RHS H5 (-23 to 30°C)

Watch for — Spring frost on open bracts: The large white bracts can be browned by a late frost during or just after opening. Shelter from frost pockets and cold winds protects the display.

What dogwood 'eddie's white wonder''s hardiness rating actually means

Yes — dogwood 'eddie's white wonder' is genuinely cold hardy. Rated RHS H5 and USDA 6-8, 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 6-8 — 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. Dogwood 'Eddie's White Wonder' is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for dogwood 'eddie's white wonder' 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 dogwood 'eddie's white wonder' go outside or overwinter — and where?

Plant it out within USDA 6-8 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 dogwood 'eddie's white wonder' can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H5 figure above.

Dogwood 'Eddie's White Wonder' hardiness — frequently asked questions

Is dogwood 'eddie's white wonder' cold hardy?

Yes — dogwood 'eddie's white wonder' is genuinely cold hardy. Rated RHS H5 and USDA 6-8, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Dogwood 'Eddie's White Wonder' is hardy across USDA 6-8; 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 dogwood 'eddie's white wonder' can survive?

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

What hardiness zone is dogwood 'eddie's white wonder'?

Dogwood 'Eddie's White Wonder' is rated USDA 6-8 and RHS H5 — Hardy in most of the UK and in cold winters.

Can dogwood 'eddie's white wonder' survive winter outside?

Plant it out within USDA 6-8 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 dogwood 'eddie's white wonder' 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.