Cold hardiness & minimum temperature

Is Tartarian Honeysuckle (Lonicera tatarica)cold hardy? Hardiness zone & min temp

Also called Tatarian Honeysuckle, Bush Honeysuckle, Siberian Honeysuckle.

More about tartarian honeysuckle

About Tartarian Honeysuckle

Lonicera tatarica · also called Tatarian Honeysuckle, Bush Honeysuckle · flowering

Lonicera tatarica is a vigorous deciduous shrub from central Asia bearing masses of pink to white fragrant flowers in late spring, followed by red or orange berries. It is extremely cold-hardy and tolerant of tough conditions. Note: the berries are toxic to humans and pets and must not be eaten.

Cold limit: USDA 3-9 · RHS H7 (-40 to 35°C)

Watch for — Dieback: Canker or frost damage can cause branch dieback; prune to healthy wood and dispose of infected material.

What tartarian honeysuckle's hardiness rating actually means

Yes — tartarian honeysuckle is genuinely cold hardy. Rated RHS H7 and USDA 3-9, 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 3-9 — 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 below about −20 °C. Tartarian Honeysuckle is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for tartarian honeysuckle 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 tartarian honeysuckle go outside or overwinter — and where?

Plant it out within USDA 3-9 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 tartarian honeysuckle can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H7 figure above.

Tartarian Honeysuckle hardiness — frequently asked questions

Is tartarian honeysuckle cold hardy?

Yes — tartarian honeysuckle is genuinely cold hardy. Rated RHS H7 and USDA 3-9, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Tartarian Honeysuckle is hardy across USDA 3-9; 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 tartarian honeysuckle can survive?

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

What hardiness zone is tartarian honeysuckle?

Tartarian Honeysuckle is rated USDA 3-9 and RHS H7 — Hardy in the severest European continental winters.

Can tartarian honeysuckle survive winter outside?

Plant it out within USDA 3-9 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 tartarian honeysuckle 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.