What plant hardiness zone is Alto

Alto is located at Cuneo, Piedmont (Piemonte), Italy.

Plant hardiness zone (winter frost zone or gardening zone) for Alto is 8b by the USDA scale.

Coldest zone's winter temperature is −9.4 … −6.7 °C.

Plants of 8b USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 8b USDA.

Alternative climatic zone of gardening for Alto by UK RHS scale is H4.

Plants of H4 RHS hardiness zone suitable for outdoor gardening and growing in this winter frost zone H4 RHS.

Alto, Piedmont @ wikipedia.

* The lowest temperature in Alto was -8.4 °C on 06/02/2012.