When to plant eggplant in Fargo, North Dakota

May 24 – June 7

Transplant outdoors · typical Fargo year

Climate basis: NOAA station Fargo Hector INTL AP, ND (USW00014914), 1 mi (2 km) from downtown Fargo (ZCTA 58102 centroid), elevation 900 ft, on the 1991–2020 climate normals. Transplant eggplant outdoors from approximately the dates above, anchored to the median last spring 32°F freeze (May 10). One year in ten still freezes after May 23.

Last spring freezeMay 101-in-10 after May 23
First fall freezeSeptember 301-in-10 before Sep 18
Frost-free season143 daysmedian at 32°F
Hard freeze, 28°Apr 30Oct 10kills even hardy greens
USDA zone4a-30 to -25°F winter low not frost timing

The Fargo year

Start seeds indoorsMar 15 – Mar 29
Transplant outdoorsMay 24 – Jun 7
  • indoors under lights
  • in the garden
  • frost-free season
  • 1-in-10 years still freeze to May 23
Eggplant in Fargo · freeze context from Fargo Hector INTL AP, ND, 1991–2020 normals.

Every method, with its sources

Start seeds indoors

Mar 15 – Mar 29

Sow 8–10 weeks before the transplant window opens (UNH 8–10 weeks; Missouri G6570 6–8 weeks). Anchored to the median last spring freeze (May 10). University of New Hampshire Extension · University of Missouri Extension

Transplant outdoors

May 24 – Jun 7

UNH: set out 2–3 weeks after the last frost; Purdue: very tender — at least two weeks after. Span extended to 14 days. Anchored to the median last spring freeze (May 10). University of New Hampshire Extension · Purdue University Extension

Variety assumption: Assumes an average variety (about 65–80 days from transplant).

These windows describe typical years (1991–2020 climate normals), not this year's forecast. Freezes happen outside them — especially in frost pockets, valleys, and urban edges. Watch the forecast before committing tender plants.

This week, not a typical year:
Crop rule sources (3)

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