What plant hardiness zone is St. Ursen

St. Ursen is located at Sense, Freiburg (Fribourg) (FR), Switzerland.

Plant hardiness zone (winter frost zone or gardening zone) for St. Ursen 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 St. Ursen 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.

St. Ursen @ wikipedia.

* The lowest temperature in St. Ursen was -18.6 °C on 05/02/2012.