What plant hardiness zone is Port-Louis

Port-Louis is located at Morbihan, Bretagne (BRE), France.

Plant hardiness zone (winter frost zone or gardening zone) for Port-Louis 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 Port-Louis 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.

Port-Louis, Morbihan @ wikipedia.

* The lowest temperature in Port-Louis was -7 °C on 28/02/2018.