Know before you mow
We watch the weather for your ZIP code and tell you the exact moment it's worth mowing, feeding, treating, or watering — so nothing's wasted and nothing's missed. A handful of emails a year. No app to check.
Cool-season lawn regions only for now — 12 states covered.
✂️ Mow time
Growth has accumulated enough since the last mow (as of 14 March 2026).
Soil physics
Soil-temperature and water-balance modeling behind every alert
12 cities
backtested against 86 years of US weather before this launched
12 of 12
cities hit a real, named US drought in backtesting, unprompted
How it works
Three steps to set up. Then we do the watching.
Drop in your ZIP
Takes about 30 seconds. No app to install, no account to create, no card.
We watch the weather
Soil temperature, rainfall, and evapotranspiration for your exact spot, checked every single day.
You get an email when it matters
Only when there's something worth acting on. No daily digests, no noise.
What you'll get
No daily updates, no noise — just an email exactly when one of these four things is true.
Spring feed
The week your lawn can use nitrogen. Feed too early and it washes straight through the soil; too late and you've missed the growth spurt.
Crabgrass & weed prevention
Timed for the narrow window just before germination starts. Put it down much earlier and there's nothing there yet for it to work against.
Mow rhythm
Mow as often as that week's growth calls for — never scalped after a growth spurt, never shaggy in a lull.
Drought watch
The point where your lawn is properly water-stressed, not just dry-looking in the afternoon sun — so you know whether it's worth reaching for the hose, or fine to let it go dormant.
Where Turf Alert works today
The US splits between cool-season grass (North) and warm-season grass (South) — completely different growth biology. We've only validated the model for cool-season regions so far, so signup is limited to ZIP codes in:
Washington · Oregon · Utah · Colorado · Minnesota · Illinois · Michigan · Missouri · Pennsylvania · New York · Massachusetts · Washington DC
Outside these states? We're not there yet — nothing to sign up for until the model's been checked against your region's climate.
Questions people ask
Is it really free?+
Yes. Email alerts are completely free, no card required, and there's no premium tier hiding behind it.
How many emails will I actually get?+
A handful a year — one when it's worth mowing, feeding, treating, or watering, and nothing in between.
What are the alerts actually based on?+
Weather data for your ZIP code — soil temperature, rainfall, and evapotranspiration — run through a physics-based growth and water-balance model, backtested against 86 years of weather data across 12 major US cities before this launched.
Do I need to install an app?+
No. Everything arrives by email. If you'd rather check in yourself, the live forecast page tracks the same model across every covered US city.
Does it cover my area?+
Not yet everywhere — the US splits between cool-season and warm-season lawn grass, completely different growth biology, and only cool-season regions are validated so far. Enter your ZIP above to check, or see the state list below.
Can I pause alerts for No Mow May?+
Yes — tick the No Mow May option under advanced settings when you sign up, and mow alerts pause automatically for the month.
Ready to know before you mow?
Free forever. A handful of emails a year. Unsubscribe whenever.
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