LawnWeather

Oklahoma Lawn Care Calendar

In Oklahoma, crabgrass preventer typically goes down between Mar 1 and Mar 31: first in Lawton, last in Oklahoma City. Below are typical fertilizer, seeding and frost dates for Oklahoma City, Tulsa, Lawton, Norman and Broken Arrow, from 2016–2025 weather data. Enter your ZIP code for this year's timing.

When to apply pre-emergent in Oklahoma

Typically between Mar 1 and Mar 31, depending on where you live. The window opens first in Lawton (around Mar 1) and last in Oklahoma City (around Mar 7). Apply when soil reaches 50°F, before it stays above 55°F.

CityCrabgrass preventer window
LawtonMar 1 – Mar 25
NormanMar 3 – Mar 31
Broken ArrowMar 4 – Mar 30
TulsaMar 5 – Mar 30
Oklahoma CityMar 7 – Mar 31

Cool-season lawn calendar

Lawns in Tulsa, Broken Arrow are mostly cool-season grass (tall fescue, Kentucky bluegrass, perennial ryegrass).

CitySpring fertilizerOverseeding & seedingFall fertilizer
TulsaMar 23 – Apr 27Aug 22 – Oct 11Oct 7 – Nov 30
Broken ArrowMar 23 – Apr 27Aug 22 – Oct 11Oct 7 – Nov 30

Warm-season lawn calendar

Lawns in Oklahoma City, Lawton, Norman are mostly warm-season grass (Bermuda, zoysia, St. Augustine, centipede).

CityFertilizerSeeding, sodding & pluggingFall pre-emergent (winter weeds)
Oklahoma CityMay 5 – Sep 24May 5 – Aug 22Oct 6 – Oct 27
LawtonApr 27 – Sep 29Apr 27 – Aug 27Oct 9 – Oct 30
NormanMay 5 – Sep 29May 5 – Aug 27Oct 5 – Oct 26

Frost dates in Oklahoma

CityLast spring frostFirst fall frost
Oklahoma CityMar 31Nov 5
TulsaMar 26Nov 5
LawtonMar 23Nov 10
NormanMar 31Nov 10
Broken ArrowMar 28Nov 5

Median dates, 2016–2025. A dash means frost does not occur in most years.

Frequently asked questions

When should I put down pre-emergent in Oklahoma?

Typically between Mar 1 and Mar 31, depending on where you live. The window opens first in Lawton (around Mar 1) and last in Oklahoma City (around Mar 7). Apply when soil reaches 50°F, before it stays above 55°F.

When is the best time to seed grass in Oklahoma?

Seed or sod warm-season grass (Bermuda, zoysia, St. Augustine, centipede) once soil stays above 65°F: typically from Apr 27, finishing about 10 weeks before the first fall frost.

What type of grass grows in Oklahoma?

Oklahoma spans both zones: warm-season grass (Bermuda, zoysia, St. Augustine, centipede) does best in the warmer parts of the state, cool-season grass (tall fescue, Kentucky bluegrass, perennial ryegrass) in the cooler parts.

Lawn care guides

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