What plant hardiness zone is Castel San Pietro Romano

Castel San Pietro Romano is located at Rome, Lazio, Italy.

Plant hardiness zone (winter frost zone or gardening zone) for Castel San Pietro Romano 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 San Pietro Romano 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 San Pietro Romano @ wikipedia.

* The lowest temperature in Castel San Pietro Romano was -6.8 °C on 28/02/2018.