What plant hardiness zone is Jeffers Garden

Jeffers Garden is located at Clatsop County, Oregon (OR), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Jeffers Garden 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.

Jeffers Garden, Oregon @ wikipedia.