Cold hardiness & minimum temperature

Is Chrysanthemum 'Innocence' (Chrysanthemum 'Innocence')cold hardy? Hardiness zone & min temp

Also called Innocence Mum, White Chrysanthemum, Innocence Spray Mum.

More about chrysanthemum 'innocence'

About Chrysanthemum 'Innocence'

Chrysanthemum 'Innocence' · also called Innocence Mum, White Chrysanthemum · flowering

Chrysanthemum 'Innocence' is a spray chrysanthemum producing an abundance of small, delicate white flowers with a pale yellow centre from late summer into autumn. Popular as a cut flower for its purity of colour and long vase life. Toxic to dogs, cats, and horses.

Cold limit: USDA 5-9 · RHS H5 (10-20°C)

What chrysanthemum 'innocence''s hardiness rating actually means

Yes — chrysanthemum 'innocence' is genuinely cold hardy. Rated RHS H5 and USDA 5-9, 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 5-9 — 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 about −15 to −10 °C. Chrysanthemum 'Innocence' is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for chrysanthemum 'innocence' 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 chrysanthemum 'innocence' go outside or overwinter — and where?

Plant it out within USDA 5-9 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 chrysanthemum 'innocence' can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H5 figure above.

Chrysanthemum 'Innocence' hardiness — frequently asked questions

Is chrysanthemum 'innocence' cold hardy?

Yes — chrysanthemum 'innocence' is genuinely cold hardy. Rated RHS H5 and USDA 5-9, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Chrysanthemum 'Innocence' is hardy across USDA 5-9; 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 chrysanthemum 'innocence' can survive?

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

What hardiness zone is chrysanthemum 'innocence'?

Chrysanthemum 'Innocence' is rated USDA 5-9 and RHS H5 — Hardy in most of the UK and in cold winters.

Can chrysanthemum 'innocence' survive winter outside?

Plant it out within USDA 5-9 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 chrysanthemum 'innocence' 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.