Most "when to plant" tools give you one number. GrowGuide combines the 2023 USDA Plant Hardiness Zone Map, NOAA 1991–2020 frost-date normals, and NOAA monthly climate normals into a single, honest local page for your city — your hardiness zone, your average last & first frost, your growing-season length, a month-by-month weather table, and a crop-by-crop planting schedule computed from your frost dates.
Browse by state
Our free interactive tools return exact frost dates, a 26-crop calendar, and typical weather for any U.S. ZIP.
Open the frost & planting tool
🌾 Get a frost reminder
One email in early spring and early fall with the dates for your area. No spam.
How it works
Every city page is generated from public-domain government data — nothing invented. We show the nearest weather station and how far it is, and label frost dates as the 50%-probability date so you know exactly how precise the numbers are. Guidance is advisory: adjust for your own microclimate.