What plant hardiness zone is Horka I

Horka I is located at Kutná Hora, Central Bohemian, středočeský, Czechia.

Plant hardiness zone (winter frost zone or gardening zone) for Horka I 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 Horka I 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.

Horka I @ wikipedia.

* The lowest temperature in Horka I was -20.9 °C on 12/02/2012.