Cold hardiness & minimum temperature

Is Cercidiphyllum japonicum 'Pendulum' (Cercidiphyllum japonicum 'Pendulum')cold hardy? Hardiness zone & min temp

Also called Weeping Katsura.

More about cercidiphyllum japonicum 'pendulum'

About Cercidiphyllum japonicum 'Pendulum'

Cercidiphyllum japonicum 'Pendulum' · also called Weeping Katsura · flowering

The weeping form of the katsura, forming a dramatic dome or cascade of arching, trailing branches clothed in rounded heart-shaped leaves. Foliage emerges bronze, matures blue-green and colours to yellow and apricot-pink in autumn, releasing the characteristic burnt-sugar scent as it falls. A graceful, sculptural specimen for moist, sheltered gardens, often top-grafted to control its height.

Cold limit: USDA 4-8 · RHS H6 (-25 to 30°C)

Watch for — Late-frost injury: Bronze new leaves can be blackened by late spring frosts; site out of frost pockets and exposure to protect the early flush.

What cercidiphyllum japonicum 'pendulum''s hardiness rating actually means

Yes — cercidiphyllum japonicum 'pendulum' is genuinely cold hardy. Rated RHS H6 and USDA 4-8, 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 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 about −20 to −15 °C. Cercidiphyllum japonicum 'Pendulum' is built for winter — once established it takes hard frost and snow in its stride.

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

Cercidiphyllum japonicum 'Pendulum' hardiness — frequently asked questions

Is cercidiphyllum japonicum 'pendulum' cold hardy?

Yes — cercidiphyllum japonicum 'pendulum' is genuinely cold hardy. Rated RHS H6 and USDA 4-8, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Cercidiphyllum japonicum 'Pendulum' 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 cercidiphyllum japonicum 'pendulum' can survive?

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

What hardiness zone is cercidiphyllum japonicum 'pendulum'?

Cercidiphyllum japonicum 'Pendulum' is rated USDA 4-8 and RHS H6 — Hardy throughout the UK and northern Europe.

Can cercidiphyllum japonicum 'pendulum' 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 cercidiphyllum japonicum 'pendulum' 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.