LawnWeather

South Dakota Lawn Care Calendar

In South Dakota, crabgrass preventer typically goes down between Apr 19 and May 23: first in Sioux Falls, last in Rapid City. Below are typical fertilizer, seeding and frost dates for Sioux Falls, Rapid City and Aberdeen, from 2016–2025 weather data. Enter your ZIP code for this year's timing.

When to apply pre-emergent in South Dakota

Typically between Apr 19 and May 23, depending on where you live. The window opens first in Sioux Falls (around Apr 19) and last in Rapid City (around May 4). Apply when soil reaches 50°F, before it stays above 55°F.

CityCrabgrass preventer window
Sioux FallsApr 19 – May 15
AberdeenMay 1 – May 15
Rapid CityMay 4 – May 23

Cool-season lawn calendar

Lawns across South Dakota are mostly cool-season grass (tall fescue, Kentucky bluegrass, perennial ryegrass).

CitySpring fertilizerOverseeding & seedingFall fertilizer
Sioux FallsMay 8 – Jun 12Jul 28 – Sep 16Aug 24 – Oct 28
Rapid CityMay 16 – Jun 20Jul 28 – Sep 16Aug 12 – Oct 30
AberdeenMay 8 – Jun 12Jul 24 – Sep 12Aug 6 – Oct 25

Frost dates in South Dakota

CityLast spring frostFirst fall frost
Sioux FallsApr 28Oct 11
Rapid CityMay 4Oct 11
AberdeenMay 7Oct 7

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 South Dakota?

Typically between Apr 19 and May 23, depending on where you live. The window opens first in Sioux Falls (around Apr 19) and last in Rapid City (around May 4). Apply when soil reaches 50°F, before it stays above 55°F.

When is the best time to seed grass in South Dakota?

Early fall is best for cool-season grass (tall fescue, Kentucky bluegrass, perennial ryegrass): typically from Jul 24 to Sep 16 across South Dakota, while soil cools from 65°F toward 50°F.

What type of grass grows in South Dakota?

Most lawns in South Dakota are cool-season grass (tall fescue, Kentucky bluegrass, perennial ryegrass).

Lawn care guides

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