What plant hardiness zone is Joniškis

Joniškis is located at Joniškis District, Šiauliai, Šiaulių, Lithuania.

Plant hardiness zone (winter frost zone or gardening zone) for Joniškis is 4b by the USDA scale.

Coldest zone's winter temperature is −31.7 … −28.9 °C.

Plants of 4b USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 4b USDA.

Joniškis @ wikipedia.

* The lowest temperature in Joniškis was -29.2 °C on 05/02/2012.