Frost Dates & Planting Calendar for West Fargo, ND
Plan your garden around West Fargo, ND's typical frost-free growing season, using NOAA climate normals and a 42-crop planting calendar built for this location.
Last Spring Frost
May 10
Safe May 23
Typical May 10
Risky Apr 27
First Fall Frost
September 30
Safe Sep 18
Typical Sep 30
Risky Oct 15
Growing Season
143 days
Typical last frost to typical first frost.
USDA Hardiness Zone
Zone 4a
Very cold winters, focus on short-season varieties and cold-hardy perennials.
Data: NOAA station FARGO HECTOR INTL AP, ND US, 8.8 km away.
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days until the typical last spring frost
Monthly Temperatures
Avg. high
Avg. temp
Avg. low
Planting Calendar
| Crop | Start indoors | Direct sow | Transplant | Fall planting | Maturity | Notes |
|---|---|---|---|---|---|---|
| Tomato | Mar 15 – Mar 29 | — | May 17 – May 24 | — | 60–85 days | Start indoors 6-8 weeks before last frost; transplant out 1-2 weeks after last frost once soil has warmed. |
| Pepper | Mar 1 – Mar 15 | — | May 17 – May 31 | — | 60–90 days | Slow to germinate; start indoors 8-10 weeks before last frost. Transplant only once nights stay above 55F, 1-3 weeks after last frost. |
| Eggplant | Mar 1 – Mar 15 | — | May 24 – May 31 | — | 65–85 days | Warm-season crop, similar timing to pepper; needs consistently warm soil (65F+) to transplant. |
| Cucumber | Apr 12 – Apr 19 | May 17 – May 24 | May 17 – May 24 | — | 50–65 days | Can be started indoors 3-4 weeks before transplanting, or direct-sown 1-2 weeks after last frost once soil is warm. |
| Zucchini | Apr 19 – Apr 26 | May 17 – May 31 | May 17 – May 24 | — | 45–55 days | Fast-growing squash; direct sow 1-3 weeks after last frost, or start indoors 2-3 weeks early for a head start. |
| Winter Squash | Apr 12 – Apr 19 | May 17 – May 31 | May 17 – May 24 | — | 80–110 days | Long season; direct sow after soil warms, or start indoors 3-4 weeks before last frost in short-season climates. |
| Pumpkin | — | May 17 – May 31 | — | — | 90–120 days | Direct sow 1-3 weeks after last frost; back-time from your first fall frost so the 90-120 day maturity window lands before it. |
| Watermelon | Apr 12 – Apr 19 | — | May 24 – May 31 | — | 70–90 days | Needs warm soil (65F+); start indoors 3-4 weeks before last frost, transplant 2-3 weeks after last frost. |
| Cantaloupe | Apr 12 – Apr 19 | — | May 24 – May 31 | — | 70–90 days | Same warm-soil requirements as watermelon; avoid disturbing roots when transplanting. |
| Corn | — | May 10 – May 24 | — | — | 60–100 days | Direct sow at last frost to 2 weeks after, once soil reaches 60F; does not transplant well. Succession sow every 2 weeks. |
| Green Bean | — | May 10 – May 24 | — | — | 50–65 days | Direct sow at last frost to 2 weeks after, once soil has warmed; frost-tender, do not rush. |
| Pea | — | Mar 29 – Apr 12 | — | — | 55–70 days | Cold-hardy; direct sow 4-6 weeks before last frost as soon as soil can be worked. |
| Lettuce | — | Apr 12 – Apr 26 | — | Aug 5 – Aug 19 | 45–60 days | Cold-hardy; direct sow 2-4 weeks before last frost. Also transplantable from indoor starts. |
| Spinach | — | Mar 29 – Apr 12 | — | Aug 5 – Aug 19 | 40–50 days | Very cold-hardy; direct sow 4-6 weeks before last frost as soon as soil can be worked. |
| Kale | — | Apr 12 – Apr 26 | — | Jul 22 – Aug 5 | 50–65 days | Cold-hardy; direct sow 2-4 weeks before last frost or start indoors for earlier transplants. |
| Arugula | — | Apr 12 – Apr 26 | — | Aug 19 – Aug 26 | 30–40 days | Fast-growing, cold-tolerant green; direct sow 2-4 weeks before last frost, succession sow every 2-3 weeks. |
| Swiss Chard | — | Apr 19 – May 3 | — | — | 50–60 days | Fairly cold-hardy; direct sow 1-3 weeks before last frost. Tolerates light frost in fall too. |
| Broccoli | Mar 22 – Apr 5 | — | Apr 19 – Apr 26 | Jul 29 – Aug 5 | 55–80 days | Start indoors 5-7 weeks before last frost; transplant out 2-3 weeks before last frost (hardens off to light frost). |
| Cauliflower | Mar 22 – Apr 5 | — | Apr 26 – May 3 | Jul 22 – Jul 29 | 55–85 days | Fussier than broccoli about temperature swings; start indoors 5-7 weeks before last frost, transplant 1-2 weeks before last frost. |
| Cabbage | Mar 22 – Apr 5 | — | Apr 12 – Apr 26 | Jul 22 – Aug 5 | 60–100 days | Cold-hardy; start indoors 5-7 weeks before last frost, transplant 2-4 weeks before last frost. |
| Brussels Sprouts | Mar 22 – Apr 5 | — | Apr 19 – May 3 | — | 90–110 days | Long-season crop best timed to mature after a light fall frost for sweetest flavor; start indoors 5-7 weeks before last frost. |
| Carrot | — | Apr 12 – Apr 26 | — | Jul 8 – Jul 22 | 60–80 days | Direct sow only (does not transplant); sow 2-4 weeks before last frost, as soon as soil can be worked. |
| Beet | — | Apr 12 – Apr 26 | — | Jul 22 – Aug 5 | 50–65 days | Direct sow 2-4 weeks before last frost; tolerates light frost. |
| Radish | — | Apr 5 – Apr 19 | — | Aug 19 – Sep 2 | 22–30 days | Very fast and cold-hardy; direct sow 3-5 weeks before last frost, as soon as soil can be worked. |
| Turnip | — | Apr 12 – Apr 26 | — | Jul 22 – Aug 5 | 40–60 days | Cold-hardy; direct sow 2-4 weeks before last frost. |
| Onion | Mar 1 – Mar 15 | — | Apr 12 – Apr 26 | — | 90–120 days | Start seeds indoors 8-10 weeks before last frost (or use sets/transplants); set out 2-4 weeks before last frost, very cold-tolerant as seedlings. |
| Garlic | — | — | — | Sep 2 – Sep 16 | 240–270 days | Fall-planted crop only; not planted in spring in most climates. |
| Potato | — | Apr 12 – Apr 26 | — | — | 70–120 days | Plant seed potatoes 2-4 weeks before last frost, as soon as soil can be worked and is above 45F; light frost on emerging foliage is usually tolerated. |
| Sweet Potato | — | — | May 24 – Jun 7 | — | 90–120 days | Set out slips 2-4 weeks after last frost once soil is thoroughly warm (65F+); very frost/cold sensitive. |
| Asparagus | — | — | Apr 12 – Apr 26 | — | 730–1095 days | Perennial; plant crowns 2-4 weeks before last frost as soon as soil can be worked. Takes 2-3 years to full production. |
| Crop | Start indoors | Direct sow | Transplant | Fall planting | Maturity | Notes |
|---|---|---|---|---|---|---|
| Basil | Mar 29 – Apr 5 | — | May 17 – May 24 | — | 50–70 days | Very frost/cold sensitive; start indoors 5-6 weeks before last frost, transplant only after all danger of frost (1-2 weeks after) and nights stay warm. |
| Cilantro | — | Apr 19 – May 3 | — | Aug 5 – Aug 19 | 45–70 days | Cool-season, bolts in heat; direct sow 1-3 weeks before last frost, succession sow through spring. |
| Parsley | Mar 15 – Mar 29 | — | Apr 26 – May 3 | — | 70–90 days | Slow to germinate; start indoors 6-8 weeks before last frost, transplant 1-2 weeks before last frost (biennial, cold-tolerant). |
| Dill | — | Apr 19 – May 3 | — | — | 40–60 days | Taprooted, does not transplant well; direct sow 1-3 weeks before last frost, succession sow through summer. |
| Oregano | Mar 15 – Mar 29 | — | May 10 – May 17 | — | 80–90 days | Perennial herb; start indoors 6-8 weeks before last frost, transplant around/just after last frost date. |
| Thyme | Mar 15 – Mar 29 | — | May 10 – May 17 | — | 85–95 days | Perennial herb, slow from seed; start indoors 6-8 weeks before last frost, transplant around/after last frost. |
| Crop | Start indoors | Direct sow | Transplant | Fall planting | Maturity | Notes |
|---|---|---|---|---|---|---|
| Sunflower | — | May 17 – May 31 | — | — | 70–100 days | Direct sow 1-3 weeks after last frost once soil has warmed; taprooted, resents transplanting. |
| Zinnia | Apr 12 – Apr 19 | May 17 – May 31 | May 17 – May 24 | — | 60–70 days | Frost-tender; direct sow 1-3 weeks after last frost, or start indoors 3-4 weeks early for earlier blooms. |
| Marigold | Mar 29 – Apr 12 | — | May 17 – May 24 | — | 45–60 days | Frost-tender; start indoors 4-6 weeks before last frost, transplant after all frost danger has passed. |
| Cosmos | Apr 12 – Apr 19 | May 17 – May 31 | May 17 – May 24 | — | 60–90 days | Easy from direct seed 1-3 weeks after last frost; can also start indoors 3-4 weeks early. |
| Nasturtium | — | May 17 – May 31 | — | — | 50–65 days | Frost-tender, resents root disturbance; direct sow 1-3 weeks after last frost once soil has warmed. |
| Dahlia | — | — | May 17 – May 31 | — | 90–120 days | Plant tubers 1-3 weeks after last frost once soil is warm (60F+); very frost-sensitive. |
Date ranges are estimates based on university extension guidelines and this city's NOAA frost normals — not a guarantee. Scroll to see all columns on narrow screens.
Frequently Asked Questions
When is the last frost in West Fargo, ND?
Based on 1991–2020 NOAA climate normals for the FARGO HECTOR INTL AP, ND US station, the last spring frost in West Fargo typically falls around May 10. A cautious gardener might wait until May 23 (only a 10% chance of a later frost), while April 27 marks an earlier, higher-risk planting date.
When is the first frost in West Fargo, ND in fall?
The first fall frost in West Fargo typically arrives around September 30. To stay safe, assume frost could start as early as September 18; in milder years it can hold off until October 15.
How long is the growing season in West Fargo, ND?
West Fargo's average frost-free growing season is about 143 days, running from the typical last spring frost (May 10) to the typical first fall frost (September 30).
What USDA hardiness zone is West Fargo, ND in?
West Fargo, ND is in USDA plant hardiness zone 4a, per the USDA's 2023 Plant Hardiness Zone Map. Very cold winters, focus on short-season varieties and cold-hardy perennials.