When to plant sunflowers in Indiana

Sunflowers
Sow outdoors in Indianapolis
Apr 20–May 11

Across Indiana the window opens between March 29 and April 29. Find your city below; the dates follow each town's own average last frost.

Sow outdoors, Indianapolis
Apr 20–May 11
Last sowing for a harvest
Jun 29
Last frost, Indianapolis
Apr 20

Sow outdoors up to 3 weeks after the last frost. Sow every two weeks until midsummer for flowers through fall.

Sunflowers planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
JanFebMarAprMayJunJulAugSepOctNovDec
IndianapolisApr 20–May 11
Fort WayneApr 24–May 15
EvansvilleMar 29–Apr 19
CarmelApr 21–May 12
FishersApr 21–May 12
South BendApr 23–May 14
BloomingtonApr 15–May 6
NoblesvilleApr 21–May 12
HammondApr 23–May 14
LafayetteApr 26–May 17
GreenwoodApr 20–May 11
GaryApr 22–May 13
WestfieldApr 21–May 12
MuncieApr 16–May 7
KokomoApr 27–May 18
Terre HauteApr 15–May 6
AndersonApr 19–May 10
JeffersonvilleMar 31–Apr 21
ElkhartApr 26–May 17
ColumbusApr 11–May 2
MishawakaApr 23–May 14
LawrenceApr 18–May 9
West LafayetteApr 26–May 17
PortageApr 22–May 13
PlainfieldApr 12–May 3
New AlbanyMar 31–Apr 21
MerrillvilleApr 22–May 13
Crown PointApr 29–May 20
RichmondApr 24–May 15
ValparaisoApr 22–May 13
All 49 cities
CitySow outdoorsLast frost
IndianapolisApr 20 to May 11Apr 20
Fort WayneApr 24 to May 15Apr 24
EvansvilleMar 29 to Apr 19Mar 29
CarmelApr 21 to May 12Apr 21
FishersApr 21 to May 12Apr 21
South BendApr 23 to May 14Apr 23
BloomingtonApr 15 to May 6Apr 15
NoblesvilleApr 21 to May 12Apr 21
HammondApr 23 to May 14Apr 23
LafayetteApr 26 to May 17Apr 26
GreenwoodApr 20 to May 11Apr 20
GaryApr 22 to May 13Apr 22
WestfieldApr 21 to May 12Apr 21
MuncieApr 16 to May 7Apr 16
KokomoApr 27 to May 18Apr 27
Terre HauteApr 15 to May 6Apr 15
AndersonApr 19 to May 10Apr 19
JeffersonvilleMar 31 to Apr 21Mar 31
ElkhartApr 26 to May 17Apr 26
ColumbusApr 11 to May 2Apr 11
MishawakaApr 23 to May 14Apr 23
LawrenceApr 18 to May 9Apr 18
West LafayetteApr 26 to May 17Apr 26
PortageApr 22 to May 13Apr 22
PlainfieldApr 12 to May 3Apr 12
New AlbanyMar 31 to Apr 21Mar 31
MerrillvilleApr 22 to May 13Apr 22
Crown PointApr 29 to May 20Apr 29
RichmondApr 24 to May 15Apr 24
ValparaisoApr 22 to May 13Apr 22
GoshenApr 26 to May 17Apr 26
BrownsburgApr 12 to May 3Apr 12
ZionsvilleApr 21 to May 12Apr 21
Michigan CityApr 19 to May 10Apr 19
GrangerApr 23 to May 14Apr 23
ScherervilleApr 23 to May 14Apr 23
HobartApr 22 to May 13Apr 22
MarionApr 26 to May 17Apr 26
FranklinApr 20 to May 11Apr 20
GreenfieldApr 19 to May 10Apr 19
East ChicagoApr 23 to May 14Apr 23
AvonApr 12 to May 3Apr 12
St. JohnApr 23 to May 14Apr 23
MunsterApr 23 to May 14Apr 23
HighlandApr 23 to May 14Apr 23
La PorteApr 19 to May 10Apr 19
SeymourApr 16 to May 7Apr 16
ClarksvilleMar 31 to Apr 21Mar 31
ShelbyvilleApr 17 to May 8Apr 17

Questions

When should I plant sunflowers in Indiana?

In Indianapolis, sow outdoors from April 20 to May 11. Across Indiana the window opens between March 29 and April 29, depending on the local last frost.

How is this date worked out?

Sow outdoors up to 3 weeks after the last frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.

More for Indiana

Sunflowers in other states

Frost dates for every city in Indiana