What plant hardiness zone is McChord Air Force Base

McChord Air Force Base is located at Pierce County, Washington (WA), USA.

Plant hardiness zone (winter frost zone or gardening zone) for McChord Air Force Base is 8b by the USDA scale.

Coldest zone's winter temperature is +15 … +20 °F.

Plants of 8b USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 8b USDA.

McChord Air Force Base, Washington @ wikipedia.