Cold hardiness & minimum temperature

Is Dalmatian Chrysanthemum (Tanacetum cinerariifolium)cold hardy? Hardiness zone & min temp

Also called Dalmatian Chrysanthemum, Pyrethrum Daisy, Insect Flower.

More about dalmatian chrysanthemum

About Dalmatian Chrysanthemum

Tanacetum cinerariifolium · also called Dalmatian Chrysanthemum, Pyrethrum Daisy · herb

Dalmatian Chrysanthemum is a Balkan perennial daisy grown commercially as the natural source of pyrethrin insecticides and ornamentally for its white daisy flowers and finely divided, aromatic grey-green foliage. It is drought-tolerant, deer-resistant, and thrives in open, sunny positions with sharply drained soil. A long-lived, low-maintenance border plant with significant practical value.

Cold limit: USDA 3–9 · RHS H7 (-20 to 30°C)

Watch for — Root rot in wet soils: The primary cultivation problem. Ensure drainage is sharp; add grit to clay soils. Do not mulch heavily around the crown in winter.

What dalmatian chrysanthemum's hardiness rating actually means

Yes — dalmatian chrysanthemum is genuinely cold hardy. Rated RHS H7 and USDA 3–9, 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 3–9 — 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. Dalmatian Chrysanthemum is built for winter — once established it takes hard frost and snow in its stride.

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

Plant it out within USDA 3–9 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 dalmatian chrysanthemum can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H7 figure above.

Dalmatian Chrysanthemum hardiness — frequently asked questions

Is dalmatian chrysanthemum cold hardy?

Yes — dalmatian chrysanthemum is genuinely cold hardy. Rated RHS H7 and USDA 3–9, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Dalmatian Chrysanthemum is hardy across USDA 3–9; 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 dalmatian chrysanthemum can survive?

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

What hardiness zone is dalmatian chrysanthemum?

Dalmatian Chrysanthemum is rated USDA 3–9 and RHS H7 — Hardy in the severest European continental winters.

Can dalmatian chrysanthemum survive winter outside?

Plant it out within USDA 3–9 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 dalmatian chrysanthemum 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.