What plant hardiness zone is Orta San Giulio

Orta San Giulio is located at Novara, Piedmont (Piemonte), Italy.

Plant hardiness zone (winter frost zone or gardening zone) for Orta San Giulio 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 Orta San Giulio 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.

Orta San Giulio @ wikipedia.

* The lowest temperature in Orta San Giulio was -19.6 °C on 06/02/2012.