What plant hardiness zone is Port Townsend

Port Townsend is located at Jefferson County, Washington (WA), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Port Townsend 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.

Port Townsend, Washington @ wikipedia.