Soybeans Planting Dates in Oklahoma

Usual soybeans planting and harvest periods in Oklahoma, shown as ranges with their source. Use them to frame a plan, then adjust for your own frost dates and soil temperature.

Soybeans dates in Oklahoma
Activity	Window	Source	Last verified
Planting	Apr 15 to Jul 9 usual (most active Apr 27 to Jun 27)	source	2026-11-11
Harvest	Sep 9 to Dec 1 usual (most active Sep 22 to Nov 20)	source	2026-11-11

Soybeans calendar for Oklahoma
Item	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Planting				Planting window, most active in April	Planting window, most active in May	Planting window, most active in June	Planting window in July
Harvest									Harvest window, most active in September	Harvest window, most active in October	Harvest window, most active in November	Harvest window in December

What these dates mean in Oklahoma

Planting usually runs about 86 days, from Apr 15 to Jul 9.

That start date is about 19 days earlier than the middle of the 31 places in this data set that report soybeans planting dates (May 4).

Harvest usually runs about 84 days, from Sep 9 to Dec 1.

From the start of the planting window to the start of the harvest window is about 147 days in Oklahoma, a rough guide to how long the crop occupies the bed or field.

Frost-date caveat: these are published ranges for Oklahoma. A northern or high-elevation site will run later than a southern or low one, and a cold wet spring can push planting past the window. Frost dates and local conditions vary; NASS state-level usual dates from 20-year progress data (Oct 2010 edition), begin ~5% and end ~95% complete. Check your last spring frost and soil temperature, and confirm with your county extension office.

Related guides

Soybeans dates in other places

Other crops in Oklahoma

Last reviewed: November 2026. Source: USDA NASS, Field Crops Usual Planting and Harvesting Dates (October 2010 edition, copy hosted by Cornell University Mann Library). Dates are the usual start and end of the period when about 5% to 95% of the crop is planted or harvested, from long-run state progress data. They are historic averages, not a forecast.