What plant hardiness zone is Castel Sant'Elia

Castel Sant'Elia is located at Viterbo, Lazio, Italy.

Plant hardiness zone (winter frost zone or gardening zone) for Castel Sant'Elia 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 Castel Sant'Elia 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.

Castel Sant'Elia @ wikipedia.

* The lowest temperature in Castel Sant'Elia was -7.6 °C on 28/02/2018.