When to Plant Onions: Planting Dates by State

The right time to plant onions depends on your local frost dates. Start seeds indoors 8-10 weeks before last frost (or use sets/transplants); set out 2-4 weeks before last frost, very cold-tolerant as seedlings.

Days to maturity 90–120 days

Onions Planting Windows by State

State	Planting window across the state
Alabama	Transplant outdoors Jan 24 (Mobile) to Mar 9 (Jacksonville)
Alaska	Transplant outdoors Mar 7 (Ketchikan) to May 14 (Kalifornsky)
Arizona	Transplant outdoors Dec 7 (Bullhead City) to May 7 (Flagstaff)
Arkansas	Transplant outdoors Feb 13 (Texarkana) to Mar 15 (Centerton)
California	Transplant outdoors Dec 1 (San Mateo) to Apr 29 (Big Bear City)
Colorado	Transplant outdoors Mar 17 (Grand Junction) to May 24 (Edwards)
Connecticut	Transplant outdoors Mar 8 (Bridgeport) to Apr 10 (Torrington)
Delaware	Transplant outdoors Mar 2 (Claymont) to Mar 22 (Hockessin)
District of Columbia	Transplant outdoors Feb 24 (Washington) to Mar 12 (Chevy Chase)
Florida	Transplant outdoors Dec 18 (Sarasota) to Feb 21 (Crestview)
Georgia	Transplant outdoors Jan 5 (St. Marys) to Mar 14 (Cartersville)
Idaho	Transplant outdoors Mar 9 (Lewiston) to Apr 19 (Eagle)
Illinois	Transplant outdoors Mar 4 (Granite City) to Apr 3 (Roscoe)
Indiana	Transplant outdoors Mar 1 (Evansville) to Apr 4 (Auburn)
Iowa	Transplant outdoors Mar 13 (Keokuk) to Apr 5 (Grinnell)
Kansas	Transplant outdoors Mar 7 (Kansas City) to Mar 31 (Garden City)
Kentucky	Transplant outdoors Mar 3 (Louisville) to Apr 3 (Shelbyville)
Louisiana	Transplant outdoors Dec 27 (Metairie) to Feb 17 (Minden)
Maine	Transplant outdoors Mar 28 (Lewiston) to Apr 18 (Sanford)
Maryland	Transplant outdoors Feb 22 (California) to Mar 27 (Westminster)
Massachusetts	Transplant outdoors Mar 7 (Boston) to Apr 12 (North Adams)
Michigan	Transplant outdoors Mar 22 (Port Huron) to Apr 21 (Cadillac)
Minnesota	Transplant outdoors Mar 24 (Winona) to May 8 (Hibbing)
Mississippi	Transplant outdoors Jan 15 (Biloxi) to Mar 6 (Oxford)
Missouri	Transplant outdoors Feb 26 (Sikeston) to Mar 24 (Kirksville)
Montana	Transplant outdoors Apr 7 (Laurel) to May 16 (Butte)
Nebraska	Transplant outdoors Mar 18 (Elkhorn) to Apr 13 (Alliance)
Nevada	Transplant outdoors Dec 23 (Henderson) to May 9 (Spring Creek)
New Hampshire	Transplant outdoors Mar 24 (Salem) to Apr 16 (Berlin)
New Jersey	Transplant outdoors Feb 26 (Atlantic City) to Apr 2 (Manville)
New Mexico	Transplant outdoors Jan 31 (Chaparral) to Apr 26 (Las Vegas)
New York	Transplant outdoors Feb 26 (Elmhurst) to Apr 19 (Corning)
North Carolina	Transplant outdoors Feb 18 (Morehead City) to Apr 4 (Boone)
North Dakota	Transplant outdoors Apr 6 (Wahpeton) to Apr 23 (Beulah)
Ohio	Transplant outdoors Mar 11 (Cleveland) to Apr 10 (Girard)
Oklahoma	Transplant outdoors Feb 15 (Ardmore) to Mar 21 (Guymon)
Oregon	Transplant outdoors Jan 14 (Beaverton) to May 12 (Altamont)
Pennsylvania	Transplant outdoors Mar 2 (Philadelphia) to Apr 17 (Hermitage)
Rhode Island	Transplant outdoors Mar 10 (Newport) to Apr 3 (Narragansett)
South Carolina	Transplant outdoors Jan 7 (Charleston) to Mar 23 (Gaffney)
South Dakota	Transplant outdoors Mar 29 (Tea) to Apr 14 (Ellsworth Air Force Base)
Tennessee	Transplant outdoors Feb 16 (New South Memphis) to Mar 24 (Bristol)
Texas	Transplant outdoors Dec 11 (Edinburg) to Mar 24 (Dumas)
Utah	Transplant outdoors Feb 14 (Saint George) to May 7 (Heber City)
Vermont	Transplant outdoors Apr 1 (Burlington) to Apr 22 (Morristown)
Virginia	Transplant outdoors Feb 16 (Newport News) to Mar 29 (Radford)
Washington	Transplant outdoors Feb 1 (Port Townsend) to May 2 (Cheney)
West Virginia	Transplant outdoors Mar 15 (Huntington) to Apr 8 (Beckley)
Wisconsin	Transplant outdoors Mar 22 (Kenosha) to Apr 13 (Merrill)
Wyoming	Transplant outdoors Apr 6 (Worland) to May 15 (Evanston)

Pick a state for city-by-city dates. For the most precise dates, look up your ZIP code.

When to Plant Onions: Planting Dates by State

Onions Planting Windows by State

Other Crops