When to plant sunflowers

Sunflowers
The rule

Sow outdoors up to 3 weeks after the last frost.

Sow every two weeks until midsummer for flowers through fall.

Days to harvest
70–100
Type
Warm season

Start dates by state

Alaska: May 16AKMay 16Maine: Apr 26MEApr 26Wisconsin: Apr 26WIApr 26Vermont: Apr 29VTApr 29New Hampshire: Apr 30NHApr 30Washington: Mar 8WAMar 8Idaho: Apr 24IDApr 24Montana: May 4MTMay 4North Dakota: May 4NDMay 4Minnesota: Apr 23MNApr 23Illinois: Apr 10ILApr 10Michigan: Apr 27MIApr 27New York: Apr 1NYApr 1Massachusetts: Apr 4MAApr 4Oregon: Feb 25ORFeb 25Nevada: Feb 15NVFeb 15Wyoming: May 14WYMay 14South Dakota: Apr 26SDApr 26Iowa: Apr 18IAApr 18Indiana: Apr 20INApr 20Ohio: Apr 20OHApr 20Pennsylvania: Mar 30PAMar 30New Jersey: Apr 4NJApr 4Connecticut: Apr 5CTApr 5Rhode Island: Apr 11RIApr 11California: Feb 15CAFeb 15Utah: Mar 31UTMar 31Colorado: May 4COMay 4Nebraska: Apr 16NEApr 16Missouri: Apr 4MOApr 4Kentucky: Apr 6KYApr 6West Virginia: Apr 16WVApr 16Virginia: Mar 29VAMar 29Maryland: Mar 24MDMar 24Delaware: Apr 7DEApr 7Arizona: Feb 15AZFeb 15New Mexico: Apr 23NMApr 23Kansas: Apr 11KSApr 11Arkansas: Mar 21ARMar 21Tennessee: Apr 1TNApr 1North Carolina: Mar 30NCMar 30South Carolina: Feb 15SCFeb 15District of Columbia: Mar 29DCMar 29Oklahoma: Apr 4OKApr 4Louisiana: Feb 15LAFeb 15Mississippi: Mar 6MSMar 6Alabama: Mar 24ALMar 24Georgia: Mar 24GAMar 24Hawaii: frost-freeHInoneTexas: Feb 15TXFeb 15Florida: Feb 15FLFeb 15
Before FebFebruaryMarchAprilMayJune or later
When the main planting window opens in each state's largest city. Click a state for every city.
StateLargest cityWindow
AlabamaHuntsvilleMar 24 to Apr 14
AlaskaAnchorageMay 16 to Jun 6
ArizonaPhoenixFeb 15 to Mar 8
ArkansasLittle RockMar 21 to Apr 11
CaliforniaSan JoseFeb 15 to Mar 8
ColoradoDenverMay 4 to May 25
ConnecticutBridgeportApr 5 to Apr 26
DelawareWilmingtonApr 7 to Apr 28
District of ColumbiaWashingtonMar 29 to Apr 19
FloridaJacksonvilleFeb 15 to Mar 8
GeorgiaAtlantaMar 24 to Apr 14
Hawaiino frost date
IdahoBoise CityApr 24 to May 15
IllinoisChicagoApr 10 to May 1
IndianaIndianapolisApr 20 to May 11
IowaDes MoinesApr 18 to May 9
KansasWichitaApr 11 to May 2
KentuckyLouisville/Jefferson CountyApr 6 to Apr 27
LouisianaNew OrleansFeb 15 to Mar 8
MainePortlandApr 26 to May 17
MarylandBaltimoreMar 24 to Apr 14
MassachusettsBostonApr 4 to Apr 25
MichiganDetroitApr 27 to May 18
MinnesotaMinneapolisApr 23 to May 14
MississippiJacksonMar 6 to Mar 27
MissouriKansas CityApr 4 to Apr 25
MontanaBillingsMay 4 to May 25
NebraskaOmahaApr 16 to May 7
NevadaLas VegasFeb 15 to Mar 8
New HampshireManchesterApr 30 to May 21
New JerseyNewarkApr 4 to Apr 25
New MexicoAlbuquerqueApr 23 to May 14
New YorkNew YorkApr 1 to Apr 22
North CarolinaCharlotteMar 30 to Apr 20
North DakotaFargoMay 4 to May 25
OhioColumbusApr 20 to May 11
OklahomaOklahoma CityApr 4 to Apr 25
OregonPortlandFeb 25 to Mar 18
PennsylvaniaPhiladelphiaMar 30 to Apr 20
Rhode IslandProvidenceApr 11 to May 2
South CarolinaCharlestonFeb 15 to Mar 8
South DakotaSioux FallsApr 26 to May 17
TennesseeNashvilleApr 1 to Apr 22
TexasHoustonFeb 15 to Mar 8
UtahSalt Lake CityMar 31 to Apr 21
VermontBurlingtonApr 29 to May 20
VirginiaVirginia BeachMar 29 to Apr 19
WashingtonSeattleMar 8 to Mar 29
West VirginiaCharlestonApr 16 to May 7
WisconsinMilwaukeeApr 26 to May 17
WyomingCheyenneMay 14 to Jun 4

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