What plant hardiness zone is Sankt Johann in der Haide

Sankt Johann in der Haide is located at Hartberg-Fürstenfeld, Styria (Steiermark) (STM), Austria.

Plant hardiness zone (winter frost zone or gardening zone) for Sankt Johann in der Haide 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 Sankt Johann in der Haide 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.

Sankt Johann in der Haide @ wikipedia.

* The lowest temperature in Sankt Johann in der Haide was -18.2 °C on 01/03/2018.