Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated

Zone 8b

In USDA zone 8b the coldest night of an average winter reaches 15 to 20 °F (−9.4 to −6.7 °C). 3,379 ZIP codes (8.3% of all) are in this zone.

Zone8b15 to 20 °F
Coldest night−9.4 to −6.7 °C
ZIP codes3,379
Typical last frostMar 16
Typical first frostNov 14

Frost dates vary within zone 8b

For the middle half of zone-8b ZIP codes the last spring frost falls between Mar 9 and Mar 24, and the first fall frost between Nov 9 and Nov 20. The zone measures winter cold, not season length: humid Eastern and dry Western towns in the same zone can be weeks apart. Use your ZIP code for a planting date.

States with zone 8b

Texas978 ZIPsAlabama335 ZIPsGeorgia318 ZIPsMississippi303 ZIPsWashington263 ZIPsSouth Carolina261 ZIPsLouisiana190 ZIPsOregon189 ZIPsNorth Carolina162 ZIPsCalifornia112 ZIPsArkansas88 ZIPsVirginia63 ZIPsArizona60 ZIPsNew Mexico20 ZIPsNevada14 ZIPs

Cities mostly in zone 8b

El Paso, TX135 ZIPsDallas, TX104 ZIPsFort Worth, TX54 ZIPsShreveport, LA35 ZIPsColumbia, SC34 ZIPsTacoma, WA33 ZIPsMontgomery, AL31 ZIPsJackson, MS26 ZIPsNorfolk, VA20 ZIPsVirginia Beach, VA19 ZIPsMacon, GA19 ZIPsArlington, TX18 ZIPs

← Zone 8a (colder)Zone 9a (warmer) →

Questions

What is the temperature range of zone 8b?

Zone 8b covers places where the coldest night of an average winter (the annual extreme minimum averaged over 1991–2020) is 15 to 20 °F, or −9.4 to −6.7 °C.

When is the last frost in zone 8b?

Across ZIP codes in zone 8b, the median last spring frost falls between Mar 9 and Mar 24 for the middle half of places. Zone alone doesn't set the frost date — check your ZIP code.

Which states have zone 8b?

Zone 8b occurs in 18 states; the most ZIP codes are in Texas, Alabama, Georgia, Mississippi, Washington.

What can I grow in zone 8b?

Perennials, shrubs and trees labeled hardy to zone 8b or a lower (colder) number should survive a typical winter. Annual vegetables depend on frost dates rather than zone.

Not the official USDA Plant Hardiness Zone Map. Zones come from the 2023 USDA hardiness-zone data by the PRISM Group, Oregon State University; we re-mapped and recolored them. The official map is at planthardiness.ars.usda.gov.