What plant hardiness zone is Douglas Flat

Douglas Flat is located at Calaveras County, California (CA), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Douglas Flat is 9a by the USDA scale.

Coldest zone's winter temperature is +20 … +25 °F.

Plants of 9a USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 9a USDA.

Douglas Flat, California @ wikipedia.