Root Vegetable

When to Plant Garlic in North Dakota

Plant in fall, harvest in summer. Garlic is one of the most rewarding crops for the patient gardener.

The Short Answer

In North Dakota, soil conditions are an important factor for garlic. Rich prairie soils — excellent for gardening. Alkaline in western regions. Heavy clay in Red River Valley. Garlic can also be planted in fall, 6 weeks before your first frost.

North Dakota Frost Dates

Your planting dates depend on which part of North Dakota you're in. Here are the frost date ranges by region:

Region	Zones	Last Frost (Spring)	First Frost (Fall)
Western North Dakota	3b, 4a	May 15 - May 30	Sep 10 - Sep 25
Eastern North Dakota	3a, 3b, 4a, 4b	May 10 - May 25	Sep 15 - Sep 30

Garlic Planting Schedule for North Dakota

Western North Dakota (Zones 3b, 4a)

Average last frost: May 15 - May 30 · Average first frost: Sep 10 - Sep 25

Fall Planting

6 wks before first frost

Eastern North Dakota (Zones 3a, 3b, 4a, 4b)

Average last frost: May 10 - May 25 · Average first frost: Sep 15 - Sep 30

Fall Planting

6 wks before first frost

Growing Garlic in North Dakota

Garlic in North Dakota's Climate

Your cold winters are garlic's secret weapon. Hardneck varieties — the type with the best flavor and those coveted scapes — actually require prolonged cold (vernalization) to form proper bulbs. Plant cloves in October, 6 weeks before the ground freezes, and mulch heavily. The cloves root before winter, sleep under snow, and explode with growth in spring. Northern gardeners grow the best garlic in America because the cold is an asset, not a limitation.

Soil Considerations for North Dakota

Rich prairie soils — excellent for gardening. Alkaline in western regions. Heavy clay in Red River Valley. Loose, well-drained soil is especially important for garlic since the edible portion grows underground. If your soil is heavy clay, consider raised beds.

North Dakota Climate & Growing Season

Very cold winters. Short but warm summers with long days. Wind protection very important for gardens. Garlic can handle frost well, which is an advantage in North Dakota's climate. You can push planting dates earlier in spring and extend into fall.

Growing season length varies across North Dakota: Western North Dakota (3b, 4a) has a last frost around May 15 - May 30, while Eastern North Dakota (3a, 3b, 4a, 4b) sees frost end around May 10 - May 25. This difference matters for garlic — adjust your planting dates to match your specific region.

Growing Tips

Plant individual cloves pointy-side up in fall, 4-6 weeks before ground freezes. Mulch heavily. Harvest when lower leaves brown.

Companion Planting

Plant garlic alongside these companions for better growth:

Tomatoes Peppers Lettuce Beets

Keep garlic away from:

Beans Peas

The Bottom Line

Garlic can be grown successfully across North Dakota, but your exact planting dates depend on which region you're in. Western North Dakota gardeners should plan around a May 15 - May 30 last frost, while those in Eastern North Dakota can typically plant earlier. For exact dates based on your zip code, use our free planting date finder.

Note: All dates are based on NOAA 30-year Climate Normals and represent historical averages, not predictions for any specific year. Always check your local weather forecast before planting frost-sensitive crops. Learn about our data sources.

Last reviewed: March 29, 2026