When to Apply Pre-Emergent in North Dakota
The best time to apply pre-emergent in North Dakota is early May to late May. Use the GDD tracker below for precise timing based on your ZIP code.
Check Your GDD Status
Enter your ZIP code for precise Growing Degree Day data based on your nearest weather station.
Worth buying for this timing
Best fit for this result
Some links are sponsored. We may earn a commission, but your ZIP result determines which product types we show.
Full-season preventive
Prodiamine
Prodiamine 65 WDG
Best fit: You are approaching or inside the pre-emergent window and want the longest barrier from one application.
This is the value play: one correctly timed barrier can protect the season instead of chasing weeds later.
Cannot kill already-germinated weeds
Late-window preventive
Dithiopyr
Dimension 2EW
Best fit: Your timing is tight and you want the common pre-emergent with limited early crabgrass activity.
Helps avoid buying a long-residual product after the window has narrowed.
Shorter residual than Prodiamine
Not a rescue treatment for mature or widespread visible crabgrass.
Granular easy application
Pendimethalin
Scotts Halts / Pendulum
Best fit: You want a spreader-ready option instead of mixing and spraying a liquid product.
Trades pro-style mixing for a simpler job you can finish while timing still matters.
Needs watering in within 24 hours; stains concrete
Pre-Emergent Timing in North Dakota
Spring Application
Early May to late May
Target: when soil temperature reaches 55°F at 4-inch depth for several consecutive days
Common Grass Types in North Dakota
North Dakota has a cool-season climate with cold winters and moderate summers. Crabgrass typically begins germinating in late spring, giving you more time to apply pre-emergent. The key is waiting for soil temperatures to consistently reach 55°F.
Pre-Emergent Tips for North Dakota
- Fargo and eastern North Dakota should apply in early to mid-May.
- Bismarck and western areas may target mid to late May.
- North Dakota's harsh winters and short summers mean crabgrass pressure is relatively low.
- Focus on dandelion and broadleaf weed control, which are more common concerns.
- NDSU Extension provides region-specific lawn care calendars.
Local Expert Resources
For research-backed lawn care advice specific to North Dakota, visit your state's university extension service:
NDSU ExtensionFrequently Asked Questions
When should I apply pre-emergent in North Dakota?
In North Dakota, the best time to apply pre-emergent is early May to late May. Use Growing Degree Days (GDD) tracking for precise timing based on your local soil temperature.
What grass types are common in North Dakota?
Common grass types in North Dakota include Kentucky Bluegrass, Fine Fescue, Perennial Ryegrass. North Dakota is in USDA Hardiness Zones 3a-4b.
What is the best pre-emergent herbicide for North Dakota?
For most lawns in North Dakota, Prodiamine (Prodiamine 65 WDG) provides the longest-lasting barrier at 8+ months. If you are applying late, Dithiopyr (Dimension 2EW) is a better choice because it offers early post-emergent control on young crabgrass. Compare all pre-emergent options.
What soil temperature triggers pre-emergent application in North Dakota?
Apply pre-emergent when soil temperature at 4-inch depth reaches 55°F for several consecutive days. In North Dakota, this typically corresponds to 150–200 Growing Degree Days (base 50°F) accumulated from January 1.
More North Dakota Timing Tools
Pre-emergent isn't the only lawn job worth timing by soil conditions. These trackers use the same North Dakota weather station data.
Track Your GDD
Don't guess -- use Growing Degree Days to know exactly when to apply pre-emergent herbicide at your location.
Check Your ZIP Code