What plant hardiness zone is Wangen bei Olten

Wangen bei Olten is located at Olten, Solothurn (Soleure) (SO), Switzerland.

Plant hardiness zone (winter frost zone or gardening zone) for Wangen bei Olten is 6b by the USDA scale.

Coldest zone's winter temperature is −20.6 … −17.8 °C.

Plants of 6b USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 6b USDA.

Alternative climatic zone of gardening for Wangen bei Olten by UK RHS scale is H6.

Plants of H6 RHS hardiness zone suitable for outdoor gardening and growing in this winter frost zone H6 RHS.

Wangen bei Olten @ wikipedia.

* The lowest temperature in Wangen bei Olten was -18.4 °C on 04/02/2012.