North Dakota · zones 4a–4a
When to plant snap peas in North Dakota.
Sow between Mar 24 to May 5 in a typical year, keyed to North Dakota's median last frost around May 15. A second, fall sowing fits Jun 30 to Jul 8. Dates below are state medians; your ZIP code shifts them by days to weeks.
The 2026 windows
Snap Peas dates for a typical North Dakota season.
Direct sow
Mar 24 to May 5
Keyed to the ~May 15 last frost. Sow 1" deep, 2" apart.
Fall round
Jun 30 to Jul 8
Counted back from the ~Sep 22 first frost.
Harvest
~62 days later
~0.4 lb per plant over ~3 weeks.
North Dakota spans more than one climate: Zone 4 is the most common zone, but the state runs 4a to 4a. That's why the planner works from your ZIP code's frost dates, not your zone: mountain and coastal gardens in the same state can be three weeks apart.
In North Dakota: watch for
The pests that find snap peas here.
The short season here, about 130 frost-free days, keeps snap pea in front of pea aphid only briefly. One early row cover usually carries a planting through the worst of it.
Clusters on the tender growing tips where new tendrils form.
Organic fix: Knock colonies loose with a firm blast from the hose before they build.
White powder on leaves after warm dry days and cool, dewy nights.
Organic fix: Grow resistant varieties and trellis so vines are not lying on each other.
Root rot
Seedlings stall and yellow from the bottom up, and a lifted plant shows soft brown roots instead of firm white ones.
Organic fix: Sow into a raised or well-drained bed, work compost into heavy ground, ease off the water, and move peas to fresh ground next year.
Your season math: North Dakota gives snap peas about 130 frost-free days, and it needs roughly 62 days to a first harvest. That fits about 7 re-sown rounds across the season, so you can keep it coming instead of picking once.
Planting snap peas in North Dakota: questions
When should I plant snap peas in North Dakota?+
In a typical North Dakota year, sow snap peas between Mar 24 to May 5, keyed to the state's median last frost around May 15. There's also a fall window: Jun 30 to Jul 8. Your exact dates shift with your ZIP code and microclimate.
What USDA zone is North Dakota?+
North Dakota spans zones 4a–4a, mostly zone 4. But frost dates, not zones, set planting time. The free planner uses your ZIP code's actual frost dates.
How many snap peas plants do I need?+
Depends who you're feeding. The crop page has exact counts per household size, or the free planner does the math for your family in about 60 seconds.