Cold hardiness & minimum temperature

Is Gaillardia 'Mesa Red' (Gaillardia 'Mesa Red')cold hardy? Hardiness zone & min temp

Also called Mesa Red blanket flower, red blanket flower.

More about gaillardia 'mesa red'

About Gaillardia 'Mesa Red'

Gaillardia 'Mesa Red' · also called Mesa Red blanket flower, red blanket flower · flowering

Gaillardia 'Mesa Red' is a compact hybrid blanket flower with uniformly deep red to burgundy-red petals and a dark central disc, providing a strong solid-colour contrast to the usual yellow-tipped bicolours. It blooms from late spring to frost and tolerates heat and drought exceptionally well. Gaillardia can cause mild digestive symptoms in pets if consumed.

Cold limit: USDA 3–10 · RHS H6 (-15 to 38°C)

What gaillardia 'mesa red''s hardiness rating actually means

Yes — gaillardia 'mesa red' is genuinely cold hardy. Rated RHS H6 and USDA 3–10, 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 3–10 — 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. Gaillardia 'Mesa Red' is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for gaillardia 'mesa red' 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 gaillardia 'mesa red' go outside or overwinter — and where?

Plant it out within USDA 3–10 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 gaillardia 'mesa red' can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H6 figure above.

Gaillardia 'Mesa Red' hardiness — frequently asked questions

Is gaillardia 'mesa red' cold hardy?

Yes — gaillardia 'mesa red' is genuinely cold hardy. Rated RHS H6 and USDA 3–10, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Gaillardia 'Mesa Red' is hardy across USDA 3–10; 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 gaillardia 'mesa red' can survive?

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

What hardiness zone is gaillardia 'mesa red'?

Gaillardia 'Mesa Red' is rated USDA 3–10 and RHS H6 — Hardy throughout the UK and northern Europe.

Can gaillardia 'mesa red' survive winter outside?

Plant it out within USDA 3–10 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 gaillardia 'mesa red' 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.