WhenPlant

What can I plant right now?

Enter your ZIP code. WhenPlant finds your USDA hardiness zone and real local frost dates, then tells you exactly what to sow, start, and transplant this month — for every crop.

Free. No sign-up. Your zone comes from the USDA 2023 map; frost dates from your nearest NOAA weather station (1991–2020 normals).

How WhenPlant works

1 · Your zone

Your ZIP maps to a USDA 2023 hardiness zone — the standard measure of how cold your winters get.

2 · Your frost dates

We pull your nearest NOAA station's 1991–2020 average last-spring and first-fall frost — the two dates the whole calendar counts from.

3 · Your calendar

Every crop's cited planting rule is computed against your dates: when to start indoors, transplant, direct-sow, and sow for fall.

Read the full methodology & sources →