Planting Calendar by State
Real planting windows for 19 common vegetables, calculated from each state's median frost dates (NOAA 1991-2020 climate normals) and extension-verified planting-offset rules — not generic advice with the state name swapped in. Each state page recalculates for your own ZIP code, or use the Seed Starting Calculator.
Alabama Zone 8a–9a Alaska Zone 2a–7b Arizona Zone 6a–10a Arkansas Zone 7a–8b California Zone 6a–11a Colorado Zone 4b–7a Connecticut Zone 6a–7a Delaware Zone 7b–8a District of Columbia Zone 8a–8a Florida Zone 9a–11b Georgia Zone 7a–9a Hawaii Zone 10a–12b Idaho Zone 4a–7b Illinois Zone 5a–7a Indiana Zone 6a–7a Iowa Zone 5a–5b Kansas Zone 6a–7a Kentucky Zone 6b–7a Louisiana Zone 8b–9b Maine Zone 4a–6a Maryland Zone 7a–8a Massachusetts Zone 5b–7b Michigan Zone 4b–6b Minnesota Zone 3b–5a Mississippi Zone 7b–9a Missouri Zone 6a–7a Montana Zone 3b–6a Nebraska Zone 5a–6a Nevada Zone 5a–9b New Hampshire Zone 4a–6a New Jersey Zone 6b–8a New Mexico Zone 5a–8b New York Zone 4a–7b North Carolina Zone 6b–9a North Dakota Zone 4a–4a Ohio Zone 6a–7a Oklahoma Zone 6b–8a Oregon Zone 5b–9b Pennsylvania Zone 5b–7b Rhode Island Zone 7a–7a South Carolina Zone 8a–9a South Dakota Zone 4a–5b Tennessee Zone 6b–8a Texas Zone 7a–10a Utah Zone 5b–8b Vermont Zone 4b–6a Virginia Zone 7a–8b Washington Zone 5b–9a West Virginia Zone 6a–7a Wisconsin Zone 4a–6a Wyoming Zone 4a–5b
Every state page above uses the same real calculation: each state's median last-frost and first-frost date (the median, across the state's ZIP codes, of the nearest NOAA weather station's 1991-2020 dates), run through fixed, extension-verified planting-offset rules for 19 common vegetables. For what a frost date actually measures and how these offsets are sourced, see our methodology page.