Lawn care, explained by soil temperature.
Most lawn advice says "early spring." Your soil doesn't read calendars — these guides tell you the actual trigger for each task, and our free alerts tell you the week it happens in your ZIP.
Soil Temperature for Grass Seed Germination by Grass Type
Cool-season grass germinates at 50-65°F soil temp; bermuda needs 65-70°F and zoysia 70°F+. Exact seeding temps by grass type, plus dormant seeding.
What Soil Temperature Does Poa Annua Germinate? (Fall Weed Timing Guide)
Poa annua germinates as fall soil temps drop below 70°F. Learn the exact threshold, why it's fall's crabgrass, and how to time pre-emergent around overseeding.
Prodiamine vs. Dithiopyr vs. Pendimethalin: Which Fits Your Application Window
Pick the right pre-emergent by your timing. Prodiamine for early and long residual, dithiopyr if you're late, pendimethalin on a budget.
GDD vs. Soil Temperature for Pre-Emergent Timing: Which Should You Use?
Soil temperature is the practical pre-emergent signal for homeowners. GDD is more precise but fussy. Here's how each works and when to use them.
When to Apply Crabgrass Pre-Emergent in Missouri
Missouri crabgrass pre-emergent timing by soil temperature. Kansas City, St. Louis, and Springfield windows for the transition zone with fescue and zoysia.
When to Apply Crabgrass Pre-Emergent in Virginia
The exact weeks to apply crabgrass pre-emergent in Virginia by region and grass type. Time it to 55F soil temps before crabgrass germinates.
When to Apply Crabgrass Pre-Emergent in Pennsylvania
Crabgrass pre-emergent in PA goes down when soil hits 55°F for 3 days straight - roughly early April in Philly, mid-to-late April in Pittsburgh and Erie.
When to Apply Crabgrass Pre-Emergent in Ohio
Ohio crabgrass pre-emergent timing by region. Apply before soil hits 55°F for 3 days straight—usually mid-April. Why forsythia is a rough guide at best.
Can You Overseed After Applying Pre-Emergent? The 8–16 Week Rule
How long to wait to overseed after pre-emergent by active ingredient. Prodiamine needs 16 weeks, dithiopyr 12, and mesotrione lets you seed same day.
Dethatch, Aerate, Overseed, Pre-Emergent: The Right Order (and Soil Temps for Each)
The correct order is dethatch, aerate, then overseed - and pre-emergent comes last, or not at all if you seeded. Here are the soil temps for each.
Crabgrass Germination Temperature: The 55°F Rule Explained
Crabgrass germinates when soil hits 55°F at 2 inches for 3–5 days. Learn the exact threshold, GDD timing, and when to apply pre-emergent.
When to Apply Fall Pre-Emergent in North Carolina
Apply fall pre-emergent in North Carolina when soil temps hit 70°F falling - roughly mid-September Piedmont, early October coast. Timing by region.
When to Apply Fall Pre-Emergent in Texas
Apply fall pre-emergent in Texas when soil temps hit 70F and dropping - DFW mid-Sept, Houston/Austin early Oct. Poa annua and winter weed timing by region.
When to Apply Fall Pre-Emergent in Georgia
Fall pre-emergent timing for Georgia lawns. Apply when soil hits 70°F and falling - early to mid September in most of the state. Region-by-region dates.
How to Measure Your Lawn's Soil Temperature (and When You Don't Have To)
Measure your lawn's soil temperature at 2 inches deep, mid-morning, for 3 straight days. Or skip the thermometer and use a free live ZIP lookup.
Soil Temperature vs. Air Temperature: Why Your Lawn Doesn't Care About the Forecast
Soil temperature, not air temperature, controls when weeds sprout and grass grows. Here's why the 2-inch reading beats the forecast every time.
Why Your Pre-Emergent Didn't Work: The Timing Mistake Most Homeowners Make
Crabgrass broke through your pre-emergent? The usual cause is timing. Here's how soil temperature explains the failure and how to fix it next season.
Is It Too Late to Apply Pre-Emergent? A Soil-Temperature Answer
Pre-emergent works until soil hits 55°F for spring crabgrass. Learn the exact soil-temp cutoffs, germination math, and what to do if you missed the window.
When to Apply Fall Pre-Emergent: The 70°F-and-Falling Soil Rule
Fall pre-emergent goes down when soil temps fall toward 70°F for 3 straight days. Get the state-by-state timing table and stop poa annua before it sprouts.