Cold hardiness & minimum temperature

Is Bob Gordon Elderberry (Sambucus nigra 'Bob Gordon')cold hardy? Hardiness zone & min temp

Also called Bob Gordon elderberry, high-yield elderberry.

More about bob gordon elderberry

About Bob Gordon Elderberry

Sambucus nigra 'Bob Gordon' · also called Bob Gordon elderberry, high-yield elderberry · edible

'Bob Gordon' is a heavy-cropping American elderberry selection whose fruiting heads droop downward as they ripen, deterring birds and concentrating sugars. Fully hardy and vigorous, it produces large clusters of small dark berries for cordials, syrups and wine. Berries and flowers are edible only when cooked; raw fruit, leaves and stems are mildly toxic.

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

What bob gordon elderberry's hardiness rating actually means

Yes — bob gordon elderberry 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. Bob Gordon Elderberry is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for bob gordon elderberry 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 bob gordon elderberry 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 bob gordon elderberry can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H6 figure above.

Bob Gordon Elderberry hardiness — frequently asked questions

Is bob gordon elderberry cold hardy?

Yes — bob gordon elderberry 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. Bob Gordon Elderberry 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 bob gordon elderberry can survive?

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

What hardiness zone is bob gordon elderberry?

Bob Gordon Elderberry is rated USDA 4-8 and RHS H6 — Hardy throughout the UK and northern Europe.

Can bob gordon elderberry 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 bob gordon elderberry 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.