What plant hardiness zone is Kostelecké Horky

Kostelecké Horky is located at Rychnov Nad Kněžnou, Hradec Králové, rrálovéhradecký, Czechia.

Plant hardiness zone (winter frost zone or gardening zone) for Kostelecké Horky 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 Kostelecké Horky 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.

Kostelecké Horky @ wikipedia.

* The lowest temperature in Kostelecké Horky was -20.3 °C on 12/02/2012.