Live soil temperature · 2 inches down
The soil underDallas is61.9°Fright now.
Soil temperature decides when pre-emergent, fertilizer, and seed actually work. Your lawn is already telling you what it needs. This reads it out loud.
Dallas, TX: First fall window has passed. Most labels call for a second application 8 to 10 weeks after the first.
Free, no account. Your reading, three depths, and what to do this week.
ColdPre-emergent windowActive growthHot
Free on iPhone and Android · Rated 4.9 ★ on the App Store.
One season, by the numbers
Scroll through a year of soil.
Keep scrolling. The line is a warm-season year at two inches down.
Illustrative curve. Thresholds are the site's sourced values; the app tracks your real soil against them.
How the app works
Everything that makes a good lawn feel repeatable.
Time the application
Soil temperature and growing degree days say when a product will actually work. The calendar just says what month it is.
Calculate the rate
Turn a label rate and your real square footage into pounds, ounces, and gallons without napkin math.
Spray when it's safe
Wind, rain, and temperature are checked for you, so the spray window is a green light, not a guess.
Log the result
Keep the date, product, rate, and weather. Next season you repeat what worked instead of guessing.
Free tools
Do the math before you download.
Nine calculators and live trackers, working right now, no account. When you want the season handled for you, the app picks up exactly where these leave off.
- Soil Temperature TrackerLive soil temps at 3 depths with your pre-emergent window marked on the meter.
- GDD CalculatorTrack seasonal heat accumulation and PGR reapplication timing from any US ZIP.
- Lawn Measurement ToolDraw your lawn on satellite imagery and get its real square footage.
- Price BoardLive prices for lawn products tracked across retailers, with drop alerts
- Fertilizer CalculatorPounds of product from your target nitrogen rate
- Tank Mix CalculatorPer-product amounts for your sprayer volume
- Spray Rate CalculatorProduct and carrier totals from the label rate
- Grass Seed CalculatorSeed pounds from area and extension seeding rates
- Irrigation Runtime CalculatorSprinkler minutes from a catch-can test
Season calendars
Pick the grass, then work the season.
Common questions
Before you ask.
- What does Lawn Dominator help you track?
- Lawn Dominator helps you track fertilizer, herbicide, fungicide, insecticide, and PGR applications, plus soil temperature, GDD, weather-aware spray timing, diagnostics, and tank mixes.
- Who is Lawn Dominator for?
- It is built for serious DIY lawn care users who want one place to run a Bermuda, Zoysia, St. Augustine, or cool-season lawn program without relying on Notes or spreadsheets.
- Does Lawn Dominator work for soil temperature and GDD tracking?
- Yes. The app includes soil temperature tracking and growing degree day tracking to help with pre-emergent timing, PGR reapplication windows, and other seasonal lawn decisions. PGR GDD is tracked in Celsius-scale GDD, using a 0°C base for cool-season trinexapac sessions and a 10°C base for warm-season trinexapac sessions.
- Is there a free soil temperature tracker for lawn care?
- Yes. Lawn Dominator offers a free browser-based soil temperature tracker at lawndominators.com/soil-temperature, no account or app download required. It shows current soil temperature at surface, 2-inch, and 6-inch depth with a 7-day trend and pre-emergent timing guidance for bermuda, zoysia, St. Augustine, and cool-season grass.
- Is there a free GDD calculator for lawns?
- Yes. Lawn Dominator offers a free growing degree day (GDD) calculator at lawndominators.com/gdd-tracker, no account required. It shows seasonal GDD accumulation from January 1, lets you calculate GDD from any date for PGR reapplication timing, and shows pre-emergent and greenup milestones for bermuda, zoysia, St. Augustine, and cool-season grass.
The app
Your lawn finally
keeps score.
Set your grass type and ZIP once, and let the app watch the soil, the weather, and the season for you.
Free to download on iPhone and Android.