What plant hardiness zone is Castel Madama

Castel Madama is located at Rome, Lazio, Italy.

Plant hardiness zone (winter frost zone or gardening zone) for Castel Madama 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 Madama 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 Madama @ wikipedia.

* The lowest temperature in Castel Madama was -8.7 °C on 27/02/2018.