What plant hardiness zone is Castel del Monte

Castel del Monte is located at L'Aquila, Abruzzo (Abruzzese), Italy.

Plant hardiness zone (winter frost zone or gardening zone) for Castel del Monte is 9a by the USDA scale.

Coldest zone's winter temperature is −6.7 … −3.9 °C.

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

Alternative climatic zone of gardening for Castel del Monte 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 del Monte (AQ) @ wikipedia.

* The lowest temperature in Castel del Monte was -6.1 °C on 28/02/2018.