What plant hardiness zone is Sonnino

Sonnino is located at Latina, Lazio, Italy.

Plant hardiness zone (winter frost zone or gardening zone) for Sonnino is 9b by the USDA scale.

Coldest zone's winter temperature is −3.9 … −1.1 °C.

Plants of 9b USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 9b USDA.

Alternative climatic zone of gardening for Sonnino by UK RHS scale is H3.

Plants of H3 RHS hardiness zone suitable for outdoor gardening and growing in this winter frost zone H3 RHS.

Sonnino @ wikipedia.

* The lowest temperature in Sonnino was -3 °C on 28/02/2018.