Valais (Wallis), VS, Switzerland plant hardiness zones (gardening zones)
Plant hardiness zones (winter frost zones or gardening zones) range for Valais (Wallis) (VS), Switzerland is:
by the USDA scale.
• coldest zone's winter temperature: −28.9 … −26.1 °C
• warmest zone's winter temperature: −17.8 … −15 °C