Cold hardiness & minimum temperature

Is Cornus kousa 'Miss Satomi' (Cornus kousa 'Miss Satomi')cold hardy? Hardiness zone & min temp

Also called Miss Satomi Kousa Dogwood.

More about cornus kousa 'miss satomi'

About Cornus kousa 'Miss Satomi'

Cornus kousa 'Miss Satomi' · also called Miss Satomi Kousa Dogwood · flowering

'Miss Satomi' is a pink-flowered Kousa dogwood whose early-summer blooms are large, pointed deep-pink bracts surrounding the true flowers. Strawberry-like red fruits and red-purple autumn foliage extend the display. A compact, slow-growing small tree with a tiered, spreading habit, it is an excellent specimen for borders and smaller temperate gardens.

Cold limit: USDA 5-8 · RHS H6 (-29 to 32°C)

What cornus kousa 'miss satomi''s hardiness rating actually means

Yes — cornus kousa 'miss satomi' is genuinely cold hardy. Rated RHS H6 and USDA 5-8, 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 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 −20 to −15 °C. Cornus kousa 'Miss Satomi' is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for cornus kousa 'miss satomi' 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 cornus kousa 'miss satomi' 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 cornus kousa 'miss satomi' can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H6 figure above.

Cornus kousa 'Miss Satomi' hardiness — frequently asked questions

Is cornus kousa 'miss satomi' cold hardy?

Yes — cornus kousa 'miss satomi' is genuinely cold hardy. Rated RHS H6 and USDA 5-8, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Cornus kousa 'Miss Satomi' 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 cornus kousa 'miss satomi' can survive?

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

What hardiness zone is cornus kousa 'miss satomi'?

Cornus kousa 'Miss Satomi' is rated USDA 5-8 and RHS H6 — Hardy throughout the UK and northern Europe.

Can cornus kousa 'miss satomi' 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 cornus kousa 'miss satomi' 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.