What plant hardiness zone is Hefenhofen

Hefenhofen is located at Arbon, Thurgau (Thurgovia) (TG), Switzerland.

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

Hefenhofen @ wikipedia.

* The lowest temperature in Hefenhofen was -18.8 °C on 04/02/2012.