Play · Grades 6–12 · Adults · about 2 min
❄️ Frost Date Challenge
Most gardeners plant by the calendar. How well do you actually know your frost dates? Enter a zip code, make three guesses, then see what ten years of weather say.
Frost dates use a 36°F light-frost threshold from Open-Meteo history. The season offset compares this year’s growing degree days with the ten-year normal. Full details on the Garden Calendar.