Cold hardiness & minimum temperature

Is Blanket Flower 'Goblin' (Gaillardia x grandiflora)cold hardy? Hardiness zone & min temp

Also called Goblin Blanket Flower, Dwarf Blanket Flower, Indian Blanket.

More about blanket flower 'goblin'

About Blanket Flower 'Goblin'

Gaillardia x grandiflora · also called Goblin Blanket Flower, Dwarf Blanket Flower · flowering

Gaillardia 'Goblin' is a compact dwarf blanket flower cultivar producing vivid red daisy flowers with bold yellow petal tips over a prolonged season from early summer to first frost. It thrives in hot, sunny positions with very well-drained, lean soil and is heat- and drought-tolerant. Gaillardia is mildly toxic if ingested in quantity.

Cold limit: USDA 3-10 · RHS H6 (-25-38°C)

What blanket flower 'goblin''s hardiness rating actually means

Yes — blanket flower 'goblin' 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. Blanket Flower 'Goblin' is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for blanket flower 'goblin' 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 blanket flower 'goblin' 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 blanket flower 'goblin' can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H6 figure above.

Blanket Flower 'Goblin' hardiness — frequently asked questions

Is blanket flower 'goblin' cold hardy?

Yes — blanket flower 'goblin' 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. Blanket Flower 'Goblin' 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 blanket flower 'goblin' can survive?

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

What hardiness zone is blanket flower 'goblin'?

Blanket Flower 'Goblin' is rated USDA 3-10 and RHS H6 — Hardy throughout the UK and northern Europe.

Can blanket flower 'goblin' 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 blanket flower 'goblin' 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.