Cold hardiness & minimum temperature

Is Echinacea 'Tomato Soup' (Echinacea 'Tomato Soup')cold hardy? Hardiness zone & min temp

Also called Tomato Soup coneflower, red coneflower.

More about echinacea 'tomato soup'

About Echinacea 'Tomato Soup'

Echinacea 'Tomato Soup' · also called Tomato Soup coneflower, red coneflower · flowering

Echinacea 'Tomato Soup' is a vivid hybrid coneflower with large, warm tomato-red to deep orange-red petals and a rich copper central cone. Plants reach 60–75 cm and bloom from midsummer into autumn. Drought-tolerant once established and highly attractive to bees and butterflies. Not listed as toxic by the ASPCA; safe for pet-friendly gardens.

Cold limit: USDA 4–9 · RHS H7 (-20 to 32°C)

What echinacea 'tomato soup''s hardiness rating actually means

Yes — echinacea 'tomato soup' is genuinely cold hardy. Rated RHS H7 and USDA 4–9, 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 4–9 — 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. Echinacea 'Tomato Soup' is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for echinacea 'tomato soup' 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 echinacea 'tomato soup' go outside or overwinter — and where?

Plant it out within USDA 4–9 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 echinacea 'tomato soup' can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H7 figure above.

Echinacea 'Tomato Soup' hardiness — frequently asked questions

Is echinacea 'tomato soup' cold hardy?

Yes — echinacea 'tomato soup' is genuinely cold hardy. Rated RHS H7 and USDA 4–9, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Echinacea 'Tomato Soup' is hardy across USDA 4–9; 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 echinacea 'tomato soup' can survive?

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

What hardiness zone is echinacea 'tomato soup'?

Echinacea 'Tomato Soup' is rated USDA 4–9 and RHS H7 — Hardy in the severest European continental winters.

Can echinacea 'tomato soup' survive winter outside?

Plant it out within USDA 4–9 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 echinacea 'tomato soup' 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.