What plant hardiness zone is Częstochowa

Częstochowa is located at Silesia, śląskie, Poland.

Plant hardiness zone (winter frost zone or gardening zone) for Częstochowa is 6a by the USDA scale.

Coldest zone's winter temperature is −23.3 … −20.6 °C.

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

Alternative climatic zone of gardening for Częstochowa by UK RHS scale is H7.

Plants of H7 RHS hardiness zone suitable for outdoor gardening and growing in this winter frost zone H7 RHS.

Częstochowa @ wikipedia.

* The lowest temperature in Częstochowa was -21.8 °C on 12/02/2012.