What plant hardiness zone is Saint-Oyen

Saint-Oyen is located at Aosta Valley (Valle d'Aosta), Italy.

Plant hardiness zone (winter frost zone or gardening zone) for Saint-Oyen 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 Saint-Oyen 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.

Saint-Oyen, Aosta Valley @ wikipedia.

* The lowest temperature in Saint-Oyen was -20.2 °C on 27/02/2018.