Cold hardiness & minimum temperature

Is Weeping White Mulberry (Morus alba 'Pendula')cold hardy? Hardiness zone & min temp

Also called Weeping White Mulberry, Weeping Mulberry.

More about weeping white mulberry

About Weeping White Mulberry

Morus alba 'Pendula' · also called Weeping White Mulberry, Weeping Mulberry · flowering

Weeping White Mulberry is a grafted ornamental form of Morus alba grown for its dramatically cascading branches rather than fruit production. It forms a compact, mushroom-shaped canopy ideal for small gardens and containers. Deciduous with attractive lobed foliage, it offers bold autumn colour and year-round architectural interest with minimal maintenance.

Cold limit: USDA 4-9 · RHS H6 (-25 to 38°C)

Watch for — Graft union failure: As a grafted cultivar, the union between scion and rootstock can crack or fail, particularly in severe winters or if the tree is planted too deep. Plant the graft union 5–10 cm above soil level and protect with fleece in the first winter in colder zones.

What weeping white mulberry's hardiness rating actually means

Yes — weeping white mulberry is genuinely cold hardy. Rated RHS H6 and USDA 4-9, 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 4-9 — 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 about −20 to −15 °C. Weeping White Mulberry is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for weeping white mulberry 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 weeping white mulberry go outside or overwinter — and where?

Plant it out within USDA 4-9 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 weeping white mulberry can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H6 figure above.

Weeping White Mulberry hardiness — frequently asked questions

Is weeping white mulberry cold hardy?

Yes — weeping white mulberry is genuinely cold hardy. Rated RHS H6 and USDA 4-9, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Weeping White Mulberry is hardy across USDA 4-9; 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 weeping white mulberry can survive?

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

What hardiness zone is weeping white mulberry?

Weeping White Mulberry is rated USDA 4-9 and RHS H6 — Hardy throughout the UK and northern Europe.

Can weeping white mulberry survive winter outside?

Plant it out within USDA 4-9 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 weeping white mulberry 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.