Cold hardiness & minimum temperature

Is Ivan Cranesbill (Geranium 'Ivan')cold hardy? Hardiness zone & min temp

Also called Ivan Cranesbill, Hardy Geranium 'Ivan', Cranesbill 'Ivan'.

More about ivan cranesbill

About Ivan Cranesbill

Geranium 'Ivan' · also called Ivan Cranesbill, Hardy Geranium 'Ivan' · flowering

Geranium 'Ivan' is a tall, vigorous, mound-forming hardy cranesbill of garden origin, valued for its striking magenta-red flowers with dark veining and a near-black eye — similar in character to Geranium psilostemon but more spreading. It thrives in any moderately fertile, well-drained soil in full sun to partial shade, and is remarkably cold-hardy, tolerating temperatures well below -20 °C. The single most important care step is cutting back flowered stems after the main summer flush to encourage fresh foliage and a second wave of blooms. True Geranium (cranesbill) species are not listed as toxic by the ASPCA and are widely regarded as pet-safe; note that ASPCA's toxic 'Geranium' entry refers to Pelargonium, a separate genus.

Cold limit: USDA 4-8 · RHS H7 (-30 to 30°C)

What ivan cranesbill's hardiness rating actually means

Yes — ivan cranesbill is genuinely cold hardy. Rated RHS H7 and USDA 4-8, 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 4-8 — 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. Ivan Cranesbill is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for ivan cranesbill 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 ivan cranesbill go outside or overwinter — and where?

Plant it out within USDA 4-8 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 ivan cranesbill can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H7 figure above.

Ivan Cranesbill hardiness — frequently asked questions

Is ivan cranesbill cold hardy?

Yes — ivan cranesbill is genuinely cold hardy. Rated RHS H7 and USDA 4-8, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Ivan Cranesbill is hardy across USDA 4-8; 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 ivan cranesbill can survive?

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

What hardiness zone is ivan cranesbill?

Ivan Cranesbill is rated USDA 4-8 and RHS H7 — Hardy in the severest European continental winters.

Can ivan cranesbill survive winter outside?

Plant it out within USDA 4-8 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 ivan cranesbill 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.