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USDA hardiness zone 8a, 10°F to 15°F

Zone 8a Planting Calendar: What to Plant Each Month

The coldest night of the winter averages 10°F to 15°F in zone 8a. Where it is, when its frosts come, and what to do in the garden each month, from extension service guidance.

3,429 ZIP codes

Where zone 8a is

Zone 8a covers 3,429 ZIP codes in 23 states and Washington, DC: North Carolina (640), Georgia (381), Arkansas (372), Texas (333), Alabama (332), South Carolina (205), Virginia (195), Mississippi (151) and 15 more.

Across its 458 NOAA stations the last spring frost comes around Mar 30 and the first fall frost around Nov 6; half the stations fall between Mar 25 and Apr 3 in spring and Nov 2 and Nov 9 in fall.

Cities and towns in zone 8a

Tap a town for its own frost dates and this month’s jobs; a hill or a valley a few miles off can be half a zone either side.

Twelve months

Zone 8a planting calendar

What to start, sow, plant, divide, prune, mulch and protect in zone 8a, month by month. Every job names the extension service page it rests on; open “Where this comes from” under a job to read their words.

Timed from the median frost dates of the 458 NOAA stations in zone 8a: last spring frost Mar 30, first fall frost Nov 6. Your own ZIP’s frost dates move every window, so the ZIP tool times them for you.

Pick a month above to see every job in it.

The year at a glance

  1. Start vegetable seeds indoorsDec to Mar
  2. Sow vegetables in the gardenMar to Apr
  3. Sow the fall vegetable gardenJul to Sep
  4. Set out transplantsMar to Apr
  5. Plant trees and shrubsSep 25 to Apr 13
  6. Plant garlicOct 23 to Nov 27
  7. Plant pre-chilled tulip bulbsNov 20 to Dec 31
  8. Divide fall-blooming perennialsMar 9 to Apr 20
  9. Divide spring and summer-blooming perennialsSep 25 to Nov 6
  10. Prune trees and summer-flowering shrubs while dormantFeb 16 to Mar 30
  11. Prune spring-flowering shrubs after they bloomMar 16 to May 11
  12. Prune out cold damageMar 30 to May 11
  13. Cover tender plants on a freezing nightOct 30 to Mar 30
  14. Cut back perennials after a hard freezeNov 13 to Dec 11
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61 plants

What grows in zone 8a

Perennials, shrubs, trees and fruit that NC State Extension rates as hardy in zone 8a, each linked to its plant page. A plant rated for a range of zones suits every half zone in it, so “zones 4 to 8” covers 4a through 8b.

Perennials 15

Shrubs 14

Trees 8

Fruit 15

Bulbs 7

Perennial vegetables 2

Ratings from the NC State Extension Gardener Plant Toolbox, read Oct 9, 2026. The zone covers winter cold only; heat, rain and soil decide the rest.

A summer perennial border of yellow black-eyed Susans, purple liatris spikes and silvery Russian sage, with a rose of Sharon shrub behind and small plant labels in the bed
A labeled perennial border in high summer. The zone on a plant tag is the coldest winter it is rated to come through, so a plant rated for zones 4 to 9 suits every half zone from 4a to 9b. “Perennials border in Summer”, Bindersbee, Public domain
Either side

The zones next to 8a

Each half zone is five degrees. Zone 7b is five degrees colder at 5°F to 10°F. Zone 8b is five degrees warmer at 15°F to 20°F.

Questions

Zone 8a questions

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Sources. USDA Plant Hardiness Zone Map, ZIP code tables (2023 and 2012), PRISM Climate Group, Oregon State University; USDA Plant Hardiness Zone Map; USDA Unveils Updated Plant Hardiness Zone Map (USDA Agricultural Research Service, November 15, 2023); NOAA NCEI U.S. Climate Normals 1991-2020, annual/seasonal, by station (v1.0.1); NC State Extension Gardener Plant Toolbox. Zone frost dates are the medians of the NOAA 1991 to 2020 station normals inside the zone.

The calendar’s extension sources: