What plant hardiness zone is Greifensee

Greifensee is located at Uster, Zürich (Zurich) (ZH), Switzerland.

Plant hardiness zone (winter frost zone or gardening zone) for Greifensee 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 Greifensee 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.

Greifensee, Zurich @ wikipedia.

* The lowest temperature in Greifensee was -19.1 °C on 04/02/2012.