Planting windows.
Harvest windows.
By state. By crop.
The reference farmers actually use. 900state-crop calendars anchored to USDA hardiness zones, NOAA frost-date norms, and your state’s land-grant extension service for variety-level guidance. Updated for the 2026 season.
Climate is local. Treat these calendars as anchor points, then verify against your county and your soil temperature reality. Every page links back to your state extension service.
By crop
One page per crop with the full state-by-state planting calendar.
Row Crop
Vegetables
Forages
By state
One page per state with all 18 crops and your state extension service.
- AlabamaZone 8a
- AlaskaZone 4a
- ArizonaZone 8b
- ArkansasZone 7b
- CaliforniaZone 9a
- ColoradoZone 5b
- ConnecticutZone 6b
- DelawareZone 7a
- FloridaZone 9b
- GeorgiaZone 8a
- HawaiiZone 11a
- IdahoZone 5b
- IllinoisZone 6a
- IndianaZone 6a
- IowaZone 5a
- KansasZone 6a
- KentuckyZone 6b
- LouisianaZone 9a
- MaineZone 5a
- MarylandZone 7a
- MassachusettsZone 6a
- MichiganZone 5b
- MinnesotaZone 4a
- MississippiZone 8a
- MissouriZone 6b
- MontanaZone 4b
- NebraskaZone 5a
- NevadaZone 7a
- New HampshireZone 5b
- New JerseyZone 7a
- New MexicoZone 7a
- New YorkZone 5b
- North CarolinaZone 7b
- North DakotaZone 4a
- OhioZone 6a
- OklahomaZone 7a
- OregonZone 8a
- PennsylvaniaZone 6b
- Rhode IslandZone 7a
- South CarolinaZone 8a
- South DakotaZone 4b
- TennesseeZone 7a
- TexasZone 8b
- UtahZone 6b
- VermontZone 5a
- VirginiaZone 7a
- WashingtonZone 8a
- West VirginiaZone 6b
- WisconsinZone 5a
- WyomingZone 4b
Where this data comes from.
- USDA Plant Hardiness Zone Map (2023 update) — for state-level zone assignments.
- NOAA / NCDC climate normals — for typical last-spring and first-fall frost dates.
- USDA NRCS plant materials & land-grant extension publications — for crop-level agronomic data (soil temp, GDD, frost tolerance, common pests & diseases).
- State land-grant extension services — every page links directly to the relevant extension. Variety recommendations live with extension trial reports — we don’t republish them, we point at the source.
Calendar windows are computed from a hardiness-zone × crop offset matrix using widely-published USDA frost-date norms. They are flagged as “estimated” — accurate to within a typical county’s climate band, but not a substitute for soil-temp measurement on your fields.
Calendars are the floor. Soil temp is the truth.
Bield: Farm pulls live soil temperature from weather stations in your county and tells you the day your field actually clears the threshold for your target crop.