16-day overseeding forecast for UK lawns
Overseeding works best when soil and air temperatures encourage germination without frost risk or heat stress.
A seeding window is 5 or more consecutive days where every day scores above 50 out of 100. The app searches the full 16-day forecast to find all windows and tells you whether now is ideal or when to wait.
Weather data: Open-Meteo (free, no API key required). Postcode lookup: postcodes.io.