Cold hardiness & minimum temperature

Is Ichi Ki Kei Jiro Persimmon (Diospyros kaki 'Ichi Ki Kei Jiro')cold hardy? Hardiness zone & min temp

Also called Ichi Ki Kei Jiro persimmon, early Fuyu persimmon.

More about ichi ki kei jiro persimmon

About Ichi Ki Kei Jiro Persimmon

Diospyros kaki 'Ichi Ki Kei Jiro' · also called Ichi Ki Kei Jiro persimmon, early Fuyu persimmon · edible

Ichi Ki Kei Jiro is a non-astringent Asian persimmon, eaten firm and crisp like Fuyu but on a naturally dwarf, early-ripening, more cold-tolerant tree — a favourite for small gardens and containers. Self-fruitful and reliable, it wants full sun and deep well-drained soil, and is among the hardier kaki selections, taking roughly minus 12 to minus 15 Celsius once established.

Cold limit: USDA 6-10 · RHS H4 (-15 to 35°C)

Watch for — Frost on early growth: Hardier than most kaki but new spring growth is frost-tender; a late frost can damage shoots. Protect young foliage in cold snaps.

What ichi ki kei jiro persimmon's hardiness rating actually means

Yes — ichi ki kei jiro persimmon is genuinely cold hardy. Rated RHS H4 and USDA 6-10, it lives outdoors all year and needs winter cold rather than protection from it. Its RHS rating of H4 means: Hardy in an average winter across much of the temperate world. On the US scale that maps to USDA 6-10 — 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 −10 to −5 °C. Ichi Ki Kei Jiro Persimmon is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for ichi ki kei jiro persimmon as it gets too cold:

It tolerates winter lows to about −10 to −5 °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 ichi ki kei jiro persimmon go outside or overwinter — and where?

Plant it out within USDA 6-10 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 ichi ki kei jiro persimmon can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H4 figure above.

Ichi Ki Kei Jiro Persimmon hardiness — frequently asked questions

Is ichi ki kei jiro persimmon cold hardy?

Yes — ichi ki kei jiro persimmon is genuinely cold hardy. Rated RHS H4 and USDA 6-10, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Ichi Ki Kei Jiro Persimmon is hardy across USDA 6-10; 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 ichi ki kei jiro persimmon can survive?

Minimum survivable temperature is roughly about −10 to −5 °C. Ichi Ki Kei Jiro Persimmon is built for winter — once established it takes hard frost and snow in its stride.

What hardiness zone is ichi ki kei jiro persimmon?

Ichi Ki Kei Jiro Persimmon is rated USDA 6-10 and RHS H4 — Hardy in an average winter across much of the temperate world.

Can ichi ki kei jiro persimmon survive winter outside?

Plant it out within USDA 6-10 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 ichi ki kei jiro persimmon below its minimum temperature?

It tolerates winter lows to about −10 to −5 °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.