Do the right lawn job at the right time — for your ZIP
Overseeding, pre-emergent, aeration, and feeding dates from NOAA climate data for your town — plus the everyday lawn math: seed, fertilizer, sod, water. Every tool runs in your browser. No sign-up, ever.
All tools
Lawn Calendar Lookup
Enter your ZIP — get this year’s local windows for pre-emergent, overseeding, feeding, and the last mow.
🌾Grass Seed Calculator
Lawn area × your grass type → pounds of seed to buy, for new lawns or overseeding.
🧪Fertilizer Calculator
Bag N-P-K + target nitrogen → pounds of product per application and a season schedule.
🟩Sod Calculator
Lawn area → sq ft with waste factor, rolls, pallets, and an estimated cost.
🪣Topdressing Calculator
Area × depth → cubic yards and bags of sand, compost, or topsoil for leveling.
💧Lawn Watering Calculator
Tuna-can test + weekly target → sprinkler minutes per zone, with rain subtracted.
When to… — by task and state
Know your grass
Local lawn calendars
Month-by-month lawn task calendars for cities in every state, built from 1991–2020 NOAA climate records — when to put down pre-emergent, when to overseed, when to stop. Browse all calendars →
Coming soon
Soil Temperature TrackerSoon
The true pre-emergent trigger — live soil temps for your ZIP.
New tools ship regularly
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