FrostCal

When to Plant Zucchini in Oklahoma

In a typical Oklahoma location, start seeds indoors Mar 12 – Mar 19, then sow outdoors Apr 9 – Apr 23, then transplant outdoors Apr 9 – Apr 16. Across the state, the outdoor planting window starts as early as Mar 22 in Ardmore and as late as Apr 25 in Guymon.

Method Direct sow
Days to maturity 45–55 days

Fast-growing squash; direct sow 1-3 weeks after last frost, or start indoors 2-3 weeks early for a head start.

Zucchini Planting Dates by City

CityStart indoorsDirect sowTransplant
Oklahoma CityMar 14 – Mar 21Apr 11 – Apr 25Apr 11 – Apr 18
TulsaMar 10 – Mar 17Apr 7 – Apr 21Apr 7 – Apr 14
NormanMar 10 – Mar 17Apr 7 – Apr 21Apr 7 – Apr 14
Broken ArrowMar 11 – Mar 18Apr 8 – Apr 22Apr 8 – Apr 15
LawtonMar 11 – Mar 18Apr 8 – Apr 22Apr 8 – Apr 15
EdmondMar 12 – Mar 19Apr 9 – Apr 23Apr 9 – Apr 16
MooreMar 14 – Mar 21Apr 11 – Apr 25Apr 11 – Apr 18
Midwest CityMar 12 – Mar 19Apr 9 – Apr 23Apr 9 – Apr 16
EnidMar 16 – Mar 23Apr 13 – Apr 27Apr 13 – Apr 20
StillwaterMar 15 – Mar 22Apr 12 – Apr 26Apr 12 – Apr 19
MuskogeeMar 17 – Mar 24Apr 14 – Apr 28Apr 14 – Apr 21
BartlesvilleMar 21 – Mar 28Apr 18 – May 2Apr 18 – Apr 25
OwassoMar 10 – Mar 17Apr 7 – Apr 21Apr 7 – Apr 14
ShawneeMar 9 – Mar 16Apr 6 – Apr 20Apr 6 – Apr 13
YukonMar 12 – Mar 19Apr 9 – Apr 23Apr 9 – Apr 16
ArdmoreFeb 22 – Mar 1Mar 22 – Apr 5Mar 22 – Mar 29
Ponca CityMar 20 – Mar 27Apr 17 – May 1Apr 17 – Apr 24
BixbyMar 11 – Mar 18Apr 8 – Apr 22Apr 8 – Apr 15
DuncanMar 4 – Mar 11Apr 1 – Apr 15Apr 1 – Apr 8
Del CityMar 12 – Mar 19Apr 9 – Apr 23Apr 9 – Apr 16
JenksMar 9 – Mar 16Apr 6 – Apr 20Apr 6 – Apr 13
SapulpaMar 9 – Mar 16Apr 6 – Apr 20Apr 6 – Apr 13
MustangMar 14 – Mar 21Apr 11 – Apr 25Apr 11 – Apr 18
Sand SpringsMar 9 – Mar 16Apr 6 – Apr 20Apr 6 – Apr 13
BethanyMar 12 – Mar 19Apr 9 – Apr 23Apr 9 – Apr 16
AltusMar 15 – Mar 22Apr 12 – Apr 26Apr 12 – Apr 19
ClaremoreMar 17 – Mar 24Apr 14 – Apr 28Apr 14 – Apr 21
El RenoMar 16 – Mar 23Apr 13 – Apr 27Apr 13 – Apr 20
McAlesterMar 10 – Mar 17Apr 7 – Apr 21Apr 7 – Apr 14
AdaMar 12 – Mar 19Apr 9 – Apr 23Apr 9 – Apr 16

Showing the 30 most populous of 48 Oklahoma cities. Dates are estimates from each city's NOAA frost normals and university extension timing guidelines. See all Oklahoma cities.

Frequently Asked Questions

When should I plant zucchini in Oklahoma?

In a typical Oklahoma location, start seeds indoors Mar 12 – Mar 19, then sow outdoors Apr 9 – Apr 23, then transplant outdoors Apr 9 – Apr 16. Across the state, the outdoor planting window starts as early as Mar 22 in Ardmore and as late as Apr 25 in Guymon.

When is the last frost in Oklahoma?

The average last spring frost in Oklahoma ranges from March 15 in Ardmore to April 18 in Guymon, based on NOAA 1991–2020 climate normals.

How long do zucchini take to grow?

Zucchini typically take 45–55 days from planting to harvest. Fast-growing squash; direct sow 1-3 weeks after last frost, or start indoors 2-3 weeks early for a head start.

Other Crops in Oklahoma

When to plant zucchini in other states

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