When to Plant Cabbage in Fargo, ND
Published: April 24, 2026
Cabbage Planting Dates for Fargo, ND
| Start seeds indoors | March 19–26 |
| Last frost (average) | May 7 |
| Transplant outdoors | April 16–26 |
| Minimum soil temperature | 45°F |
| Expect first harvest | June 15 – July 25 |
| Fall crop planting | July 9–19 |
| Fall crop harvest | September 7 |
| First fall frost (average) | October 1 |
⚠ Start cabbage indoors 6–8 weeks before last frost. Transplant 2–4 weeks before last frost. Very frost tolerant — withstands temperatures as low as 20°F. Also plant in late summer for fall harvest.
Best Cabbage Varieties for Fargo, ND
Consult a Fargo-area nursery or your state extension office for cabbage varieties proven in Zone 4b.
Growing Cabbage in Fargo
Fargo sits in Zone 4b, with an average last frost of May 7 and first fall frost around October 1 — giving a 147-day frost-free growing season. Cool-season crops like cabbage benefit from Fargo's cooler spring and fall windows, when temperatures stay in the 55–75°F sweet spot that produces the best flavor and least bolting.
Fargo's cooler summers are close to ideal for cabbage. The same conditions that limit tomato and pepper yields benefit cool-season crops — slower bolting, sweeter flavor, and longer harvest windows. The fall cabbage crop in Fargo is often more productive than the spring crop.
Fargo's clay-loam soils are productive but benefit from annual compost amendment — 2 to 3 inches worked in before planting improves drainage and nutrient availability for cabbage. Consistent watering (1.5 inches per week) paired with organic mulch maintains the even moisture that clay-loam holds well. Avoid working wet soil in spring, which causes severe compaction in clay-loam blends.
Cabbage Calendar for Fargo
| Month | Task |
|---|---|
| March | Start seeds indoors under grow lights |
| May | Last frost — harden off seedlings outdoors |
| April | Transplant outdoors into warm soil |
| June | Expect first harvest window to open |
| July | Start fall crop — transplants or direct sow |
| October | First fall frost — harvest remaining, end of outdoor season |
Cabbage Tips for Fargo Gardeners
- •Space plants 18 inches apart — crowding reduces head size and promotes fungal disease.
- •Side-dress with nitrogen 3–4 weeks after transplanting to support rapid leaf formation.
- •Fall plantings in Fargo often out-produce spring plantings — cooler temperatures slow bolting and concentrate flavor. Light frost can actually improve the taste of cabbage.
Common Cabbage Pests in Fargo
- •Cabbage Worm — peaks July in Zone 4b (active June–August); green caterpillars on brassicas; apply Bt spray or use row covers.
- •Cabbage Looper — peaks July in Zone 4b (active June–August); loop-walking green caterpillars; Bt spray works well.
- •Aphid — peaks July in Zone 4b (active June–August); monitor closely during peak season and treat early.
Check plants every 2–3 days during peak season — early intervention prevents most infestations from becoming serious.
What to Plant with Cabbage in Fargo
In Fargo's cold climate, Onion and Dill are the most beneficial plants to grow alongside cabbage. Onion deters carrot fly, aphids, and several root-zone pests through sulfur compounds. Keep cabbage away from Tomato — it competes for nutrients or shares pest pressure. In short-season gardens, interplanting companions at transplant time maximizes each bed's productive weeks.
Frequently Asked Questions
When should I plant cabbage in Fargo, ND?
In Fargo (Zone 4b), start cabbage seeds indoors around March 19–26 and transplant outdoors around April 16–26. The city's average last frost of May 7 is the anchor date — count 7 weeks back for seed starting and 3 weeks back for transplanting.
What zone is Fargo, ND for cabbage growing?
Fargo is USDA Zone 4b. For cabbage, this means a frost-free growing season of roughly 21 weeks running from May 7 to October 1. Cool-season crops like cabbage thrive in this zone with both spring and fall planting windows available.
When is cabbage harvest season in Fargo?
Expect the first cabbage harvest in Fargo around June 15, with harvest continuing through July 25. This is based on 60–100 days from transplant or direct sow. A fall crop planted July 9–19 adds a second harvest around September 7.
How long does it take to grow cabbage in Fargo, ND?
From transplant or direct sow to first harvest, cabbage takes 60–100 days in Fargo's climate. Based on a typical planting date of April 16–26, expect your first harvest around June 15. Fargo's cooler Zone 4b climate often lands at the slower end of this range — cooler nights slow fruit development.
What soil does cabbage need in Fargo?
Fargo's clay-loam soil is productive for cabbage but benefits from annual compost amendment. Work 2–3 inches of compost into the top 10 inches before planting. Avoid working wet soil in spring — clay-loam compacts badly when wet. Consistent watering paired with organic mulch maintains the even moisture these soils hold well.