What plant hardiness zone is Valle San Nicolao

Valle San Nicolao is located at Biella, Piedmont (Piemonte), Italy.

Plant hardiness zone (winter frost zone or gardening zone) for Valle San Nicolao 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 Valle San Nicolao 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.

Valle San Nicolao @ wikipedia.

* The lowest temperature in Valle San Nicolao was -18.2 °C on 06/02/2012.