What plant hardiness zone is Grandval

Grandval is located at Jura bernois, Bern (Berne) (BE), Switzerland.

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

Grandval BE @ wikipedia.

* The lowest temperature in Grandval was -20.1 °C on 05/02/2012.