What plant hardiness zone is Herznach-Ueken

Herznach-Ueken is located at Laufenburg, Aargau (Argovia) (AG), Switzerland.

Plant hardiness zone (winter frost zone or gardening zone) for Herznach-Ueken 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 Herznach-Ueken 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.

Herznach-Ueken @ wikipedia.

* The lowest temperature in Herznach-Ueken was -19.6 °C on 04/02/2012.