What plant hardiness zone is Crans-Montana

Crans-Montana is located at Sierre, Valais (Wallis) (VS), Switzerland.

Plant hardiness zone (winter frost zone or gardening zone) for Crans-Montana is 6a by the USDA scale.

Coldest zone's winter temperature is −23.3 … −20.6 °C.

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

Alternative climatic zone of gardening for Crans-Montana by UK RHS scale is H7.

Plants of H7 RHS hardiness zone suitable for outdoor gardening and growing in this winter frost zone H7 RHS.

Crans-Montana @ wikipedia.

* The lowest temperature in Crans-Montana was -21.3 °C on 06/02/2012.