What plant hardiness zone is Glen Echo

Glen Echo is located at Montgomery County, Maryland (MD), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Glen Echo is 7a by the USDA scale.

Coldest zone's winter temperature is 0 … +5 °F.

Plants of 7a USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 7a USDA.

Glen Echo, Maryland @ wikipedia.