2026 Planting Calendar by USDA Zone

Zone 3a

-40 to -35°F · last frost May 15

northern Minnesota, International Falls

Zone 3b

-35 to -30°F · last frost May 15

northern Maine, Bemidji MN

Zone 4a

-30 to -25°F · last frost May 10

northern Wisconsin, Fargo ND

Zone 4b

-25 to -20°F · last frost May 5

Minneapolis MN, Burlington VT

Zone 5a

-20 to -15°F · last frost Apr 30

Chicago IL, Des Moines IA

Zone 5b

-15 to -10°F · last frost Apr 25

Denver CO, Columbus OH

Zone 6a

-10 to -5°F · last frost Apr 20

St. Louis MO, Philadelphia PA

Zone 6b

-5 to 0°F · last frost Apr 15

Washington DC, Lexington KY

Zone 7a

0 to 5°F · last frost Apr 10

Nashville TN, Oklahoma City OK

Zone 7b

5 to 10°F · last frost Apr 5

Atlanta GA, Raleigh NC

Zone 8a

10 to 15°F · last frost Mar 25

Dallas TX, Charleston SC

Zone 8b

15 to 20°F · last frost Mar 15

Austin TX, Savannah GA

Zone 9a

20 to 25°F · last frost Feb 25

Houston TX, Jacksonville FL

Zone 9b

25 to 30°F · last frost Feb 10

Orlando FL, Tucson AZ

Zone 10a

30 to 35°F · last frost Jan 31

Miami FL, Phoenix AZ

Zone 10b

35 to 40°F · last frost Jan 15

Key West FL, coastal So-Cal