What plant hardiness zone is Castelletto d'Erro

Castelletto d'Erro is located at Alessandria, Piedmont (Piemonte), Italy.

Plant hardiness zone (winter frost zone or gardening zone) for Castelletto d'Erro is 8a by the USDA scale.

Coldest zone's winter temperature is −12.2 … −9.4 °C.

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

Alternative climatic zone of gardening for Castelletto d'Erro by UK RHS scale is H5.

Plants of H5 RHS hardiness zone suitable for outdoor gardening and growing in this winter frost zone H5 RHS.

Castelletto d'Erro @ wikipedia.

* The lowest temperature in Castelletto d'Erro was -10.8 °C on 06/02/2012.