What plant hardiness zone is Sankt Martin im Sulmtal

Sankt Martin im Sulmtal is located at Deutschlandsberg, Styria (Steiermark) (STM), Austria.

Plant hardiness zone (winter frost zone or gardening zone) for Sankt Martin im Sulmtal 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 Martin im Sulmtal 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 Martin im Sulmtal @ wikipedia.

* The lowest temperature in Sankt Martin im Sulmtal was -20.4 °C on 08/02/2012.