What plant hardiness zone is Tønsberg

Tønsberg is located at Vestfold og Telemark, Eastern Norway, Østlandet, Austlandet, Norway.

Plant hardiness zone (winter frost zone or gardening zone) for Tønsberg is 8b by the USDA scale.

Coldest zone's winter temperature is −9.4 … −6.7 °C.

Plants of 8b USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 8b USDA.

Alternative climatic zone of gardening for Tønsberg by UK RHS scale is H4.

Plants of H4 RHS hardiness zone suitable for outdoor gardening and growing in this winter frost zone H4 RHS.

Tønsberg @ wikipedia.

* The lowest temperature in Tønsberg was -7 °C on 28/02/2018.