When to plant sunflowers in Oklahoma

Sow outdoors in Oklahoma City

Apr 4–Apr 25

Across Oklahoma the window opens between March 15 and April 11. Find your city below; the dates follow each town's own average last frost.

Sow outdoors, Oklahoma City: Apr 4–Apr 25
Last sowing for a harvest: Jul 11
Last frost, Oklahoma City: Apr 4

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

Oklahoma CityApr 4–Apr 25

TulsaMar 31–Apr 21

NormanApr 3–Apr 24

Broken ArrowApr 1–Apr 22

EdmondApr 10–May 1

LawtonMar 26–Apr 16

MooreMar 31–Apr 21

Midwest CityApr 2–Apr 23

EnidApr 6–Apr 27

StillwaterApr 5–Apr 26

OwassoMar 31–Apr 21

BartlesvilleApr 11–May 2

MuskogeeApr 7–Apr 28

BixbyApr 1–Apr 22

ShawneeMar 30–Apr 20

JenksMar 30–Apr 20

YukonApr 2–Apr 23

ArdmoreMar 15–Apr 5

MustangApr 4–Apr 25

Ponca CityApr 10–May 1

SapulpaMar 30–Apr 20

DuncanMar 25–Apr 15

DurantMar 31–Apr 21

Del CityApr 2–Apr 23

El RenoApr 6–Apr 27

ClaremoreApr 7–Apr 28

Sand SpringsMar 30–Apr 20

BethanyApr 2–Apr 23

Questions

When should I plant sunflowers in Oklahoma?

In Oklahoma City, sow outdoors from April 4 to April 25. Across Oklahoma the window opens between March 15 and April 11, 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 Oklahoma

Sunflowers in other states

Frost dates for every city in Oklahoma