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When to plant in Fargo

Fargo, North Dakota. A sowing, planting and harvest calendar for 25 vegetables and herbs, worked out from Fargo’s own frost dates and temperatures.

Last spring frostMay 10
First autumn frostSep 30
Frost-free season142 days
Hardiness zone4b

Photo: JopkeB, CC BY-SA 4.0, via Wikimedia Commons

In the garden now (2 November 2026)

Sow or plant outside

Nothing goes in outdoors this week.

Start indoors

No indoor sowing due this week.

Ready to pick

KaleCarrots

Coming up in the next 4 weeks

No new outdoor sowings start in the next four weeks.

Fargo planting calendar

Bars show when each crop can go in and when a planting from that window is ready. The blue band is the frost season, from the average first autumn frost to the average last spring frost. Hover or tap a crop for details.

Sow indoorsSow or plant outdoorsHarvestFrost seasonToday

Swipe sideways to see the whole year →

Dates by crop

CropSow indoorsSow / plant outdoorsHarvest
Tomato Mar 29 – May 3 May 24 – Jul 18 plant out Jul 23 – Sep 29
Pepper Mar 24 – Apr 28 Jun 2 – Jul 15 plant out Jul 31 – Sep 29
Eggplant (aubergine) Mar 29 – May 3 Jun 7 – Jul 11 plant out Aug 7 – Sep 29
Cucumber Apr 30 – May 27 May 28 – Jul 29 sow Jul 14 – Sep 29
Zucchini (courgette) Apr 26 – May 23 May 24 – Aug 1 sow Jul 9 – Sep 29
Pumpkin and winter squash Apr 26 – May 23 May 24 – Jun 30 sow Aug 13 – Sep 29
Watermelon May 10 – Jun 6 Jun 7 – Jul 10 sow Aug 11 – Sep 29
Sweet corn – May 17 – Jul 14 sow Jul 27 – Sep 29
Green beans – May 24 – Jul 29 sow Jul 12 – Sep 29
Peas – Apr 18 – Apr 22 sow Jun 24 – Jul 22
Lettuce Mar 10 – Apr 7 Apr 14 – May 16, Jul 25 – Aug 22 sow Jun 13 – Jul 23, Aug 31 – Oct 10
Spinach – Apr 10 – May 10, Aug 25 – Aug 29 sow Jun 8 – Jul 15, Oct 7 – Oct 30
Kale Mar 3 – Apr 7 Apr 14 – Aug 18 sow Jun 20 – Nov 14
Cabbage Mar 3 – Apr 7, May 4 – Jun 8 Apr 21 – May 23, Jun 22 – Aug 7 plant out Jul 2 – Oct 21
Broccoli Mar 3 – Apr 7, May 10 – Jun 14 Apr 21 – May 29, Jun 28 – Aug 13 plant out Jun 25 – Aug 13, Aug 15 – Oct 14
Carrots – Apr 21 – Aug 11 sow Jun 29 – Nov 14
Beets (beetroot) – Apr 21 – Aug 18 sow Jun 21 – Oct 21
Radishes – Apr 14 – Jun 2, Aug 8 – Sep 9 sow May 26 – Jul 6, Aug 29 – Oct 14
Onions Feb 7 – Mar 14 Apr 18 – Jul 12 plant out Jul 20 – Sep 30
Garlic – Sep 24 – Oct 14 sow Jun 9 – Jun 29
Potatoes – Apr 26 – Jul 16 sow Jul 19 – Sep 30
Swiss chard – Apr 26 – Aug 21 sow Jun 19 – Oct 21
Basil Apr 21 – May 19 Jun 2 – Aug 16 plant out Jun 29 – Sep 29
Cilantro (coriander) – Apr 21 – May 24, Aug 8 – Aug 31 sow Jun 7 – Jul 21, Sep 7 – Oct 14
Parsley Feb 28 – Apr 4 Apr 25 – Aug 7 sow Jul 4 – Oct 30

Dates are for a typical year and the middle of the window is the safest. Sow a little at a time across a window rather than all at once. Cold snaps, heat waves, frost pockets and city warmth all shift the real dates; watch the forecast.

Frost dates in Fargo

Average last spring frost
May 10
Late frost (1 year in 10)
May 23
Average first autumn frost
September 30
Early frost (1 year in 10)
September 18
Frost-free growing season
142 days

“Average” is the date with an even chance of a later (spring) or earlier (autumn) frost: a night at or below 0 °C (32 °F) at screen height. Tender crops go out a week or two after the spring date, which brings the risk down to about one year in ten.

Source: NOAA 1991–2020 normals, Fargo Hector Intl Ap (6 km from the city centre).

Climate at a glance

Hardiness zone
4b from station records
Average coldest winter night
-32°C-25°F
Warmest month
July, highs 29°C85°F
Coldest month
January, lows -18°C0°F
Crops with an outdoor window
25 of 25

The zone follows the USDA scheme: bands of the average lowest temperature of the year, 10 °F wide, split into a and b halves. Worked out from the coldest night of each year 1991–2020 at the NOAA station. It tells you which perennials survive winter, not when to sow.

Temperature and rain by month

Average highAverage lowRainFreezing point

Average daily high and low temperature and monthly rain in Fargo-25°-13°-15°5°-5°23°5°41°15°59°25°77°35°95°00.0753.0150 mm5.9 inJanuary: 16 mm (0.6 in) of rainJanFebruary: 14 mm (0.6 in) of rainFebMarch: 26 mm (1.0 in) of rainMarApril: 37 mm (1.4 in) of rainAprMay: 72 mm (2.9 in) of rainMayJune: 108 mm (4.2 in) of rainJunJuly: 86 mm (3.4 in) of rainJulAugust: 76 mm (3.0 in) of rainAugSeptember: 63 mm (2.5 in) of rainSepOctober: 54 mm (2.1 in) of rainOctNovember: 22 mm (0.9 in) of rainNovDecember: 17 mm (0.7 in) of rainDecfreezingJanuary average high: -8°C (18°F)February average high: -5°C (24°F)March average high: 3°C (37°F)April average high: 12°C (54°F)May average high: 21°C (69°F)June average high: 26°C (79°F)July average high: 29°C (85°F)August average high: 28°C (82°F)September average high: 22°C (72°F)October average high: 14°C (56°F)November average high: 4°C (38°F)December average high: -5°C (23°F)January average low: -18°C (0°F)February average low: -15°C (4°F)March average low: -7°C (19°F)April average low: 0°C (32°F)May average low: 7°C (45°F)June average low: 14°C (56°F)July average low: 16°C (62°F)August average low: 14°C (58°F)September average low: 10°C (49°F)October average low: 2°C (36°F)November average low: -6°C (22°F)December average low: -14°C (8°F)
MonthHighLowMeanRain
January-8°C18°F-18°C0°F-13°C9°F16 mm0.6 in
February-5°C24°F-15°C4°F-10°C14°F14 mm0.6 in
March3°C37°F-7°C19°F-2°C28°F26 mm1.0 in
April12°C54°F0°C32°F6°C43°F37 mm1.4 in
May21°C69°F7°C45°F14°C57°F72 mm2.9 in
June26°C79°F14°C56°F20°C68°F108 mm4.2 in
July29°C85°F16°C62°F23°C73°F86 mm3.4 in
August28°C82°F14°C58°F21°C70°F76 mm3.0 in
September22°C72°F10°C49°F16°C61°F63 mm2.5 in
October14°C56°F2°C36°F8°C46°F54 mm2.1 in
November4°C38°F-6°C22°F-1°C30°F22 mm0.9 in
December-5°C23°F-14°C8°F-9°C15°F17 mm0.7 in

Monthly averages 1991–2020 from TerraClimate (about 4 km grid).

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