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Crop dates by place

Parsnip Planting Dates by State and Region

Published parsnip planting windows for 4 places, with the source and the caveats you need before you use them.

Across the 3 places in this data set, the planting window begins as early as Apr 15 (Southern Illinois) and as late as May 15 (Northern Illinois). The middle of the range starts around May 1.

Parsnip windows by place
PlacePlantingHarvest
Central IllinoisPlanting: May 1 to July 21 (Fall crop)
New HampshirePlanting: direct sow after last frost
Northern IllinoisPlanting: May 15 to Aug. 5 (Fall crop)
Southern IllinoisPlanting: April 15 to July 7 (Fall crop)

Calendar view

Parsnip calendar by place
ItemJanFebMarAprMayJunJulAugSepOctNovDec
Central Illinois plantingPlanting window in MayPlanting window in JunePlanting window in July
New Hampshire plantingTiming in table above
Northern Illinois plantingPlanting window in MayPlanting window in JunePlanting window in JulyPlanting window in August
Southern Illinois plantingPlanting window in AprilPlanting window in MayPlanting window in JunePlanting window in July
Frost-date caveat: ranges blur real differences inside a state or region. Use them to plan, then fit them to your last frost date, soil temperature and field conditions.

Related guides

Last reviewed: November 2026. Source: Illinois Extension - When to Plant (Home Vegetable Gardening).