what zone is north dakota in for planting
North Dakota: Vegetable Planting Calendar. Planting vegetable seeds or transplants at the correct time is important for getting the most out of your garden. Knowing your first and last frost dates will help you start your vegetable seeds at the right time. North Dakota is in USDA plant hardiness zones 3-4. North Dakota Last & First Frost Dates. *Based on statistics there is a 10% chance that frost will occur before or after these dates. Watch your local weather for more accurate dates.