What plant hardiness zone is Rapperswil-Jona

Rapperswil-Jona is located at See-Gaster, St. Gallen (Gall) (SG), Switzerland.

Plant hardiness zone (winter frost zone or gardening zone) for Rapperswil-Jona 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 Rapperswil-Jona 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.

Rapperswil-Jona @ wikipedia.

* The lowest temperature in Rapperswil-Jona was -18.2 °C on 04/02/2012.