What plant hardiness zone is Oberkirch

Oberkirch is located at Sursee, Luzern (Lucerne) (LU), Switzerland.

Plant hardiness zone (winter frost zone or gardening zone) for Oberkirch 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 Oberkirch 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.

Oberkirch, Lucerne @ wikipedia.

* The lowest temperature in Oberkirch was -18.6 °C on 06/02/2012.