What plant hardiness zone is Roma Creek

Roma Creek is located at Starr County, Texas (TX), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Roma Creek is 9b by the USDA scale.

Coldest zone's winter temperature is +25 … +30 °F.

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