What plant hardiness zone is Heddon Greta

Heddon Greta is located at Northumberland County, New South Wales (NSW), Australia.

Plant hardiness zone (winter frost zone or gardening zone) for Heddon Greta is 10a by the USDA scale.

Coldest zone's winter temperature is −1.1 … 1.7 °C.

Australian plant hardiness zone for Heddon Greta is 3 by the ANBG scale.

Plants of 3 ANBG hardiness zone suitable for outdoor gardening and growing in this winter frost zone 3 ANBG.

Heddon Greta, New South Wales @ wikipedia.