What plant hardiness zone is Sufers

Sufers is located at Viamala, Graubünden (Grisons) (GR), Switzerland.

Plant hardiness zone (winter frost zone or gardening zone) for Sufers is 7a by the USDA scale.

Coldest zone's winter temperature is −17.8 … −15 °C.

Plants of 7a USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 7a USDA.

Alternative climatic zone of gardening for Sufers 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.

Sufers @ wikipedia.

* The lowest temperature in Sufers was -15.8 °C on 06/02/2012.