What plant hardiness zone is Val-d'Illiez

Val-d'Illiez is located at Monthey, Valais (Wallis) (VS), Switzerland.

Plant hardiness zone (winter frost zone or gardening zone) for Val-d'Illiez is 6b by the USDA scale.

Coldest zone's winter temperature is −20.6 … −17.8 °C.

Plants of 6b USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 6b USDA.

Alternative climatic zone of gardening for Val-d'Illiez by UK RHS scale is H6.

Plants of H6 RHS hardiness zone suitable for outdoor gardening and growing in this winter frost zone H6 RHS.

Val-d'Illiez @ wikipedia.

* The lowest temperature in Val-d'Illiez was -18.6 °C on 05/02/2012.