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When to plant garlic in Bismarck: 15 September – 4 November

In Bismarck, garlic: plant from 15 September to about 4 November.

Garlic is best planted early in the window: cloves planted late make smaller bulbs. Late planting works only while the soil is not frozen. Mulch after planting.

The date is about two weeks before the average daily temperature here falls below 0 °C (ten years of weather): an estimate, not the day the ground freezes, and a cold spell can freeze it earlier. Sources: UVM Extension, UNH Extension, RHS, how the ground freezes (NRC Canada, CBD-26).

Garlic in Bismarck: soil, season and weather

Garlic goes into the ground in Bismarck from 15 September to about 4 November; the window opens a month before the first autumn frost. Nights then average below 0 °C in November–April; the coldest, January, averages -13.6 °C.

Planting15 September – 4 November
First autumn frost15 October
Coldest nightsJanuary, -13.6 °C
Soil back at 5 °C in spring13 April
Harvest (card)about 8 months after planting: May
Daylight12:37 on 15 September
Daylight at the winter solstice8:32

The same dates in Bismarck hold for Tulip, Daffodil, Crocus and Hyacinth.

Garlic in Bismarck: care after planting

Planted on 15 September: in the first weeks water every 7 days.

Feeding, by the card’s schedule from that day:

  • 15 September — feed: nitrogen
  • 13 October — feed: nitrogen

Pests and diseases of garlic to watch for:

Dates count from the first planting day of the window above; a later planting moves them by as many days.

Garlic in nearby cities

Around Bismarck, Rapid City is 3 days earlier and Pierre 9 days later.

CityDistanceDateDifference
Pierre274 km24 September – 19 November9 days later
Fargo303 km16 September – 4 November1 day later
Grand Forks303 km16 September – 31 October1 day later
Rapid City360 km12 September – 28 November3 days earlier
Winnipeg436 km12 September – 26 October3 days earlier
Sioux Falls482 km21 September – 16 November6 days later

Where to buy garlic for planting in Bismarck

Planting stock goes into the ground from 15 September to about 4 November; buy it before that. Within 15 km of Bismarck OpenStreetMap lists 1 garden centre and 1 market (collected 28 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant garlic in Bismarck?

In Bismarck, garlic: plant from 15 September to about 4 November. Garlic is best planted early in the window: cloves planted late make smaller bulbs. Late planting works only while the soil is not frozen. Mulch after planting.

When is the last spring frost in Bismarck?

Last spring frost around 1 May, first autumn frost around 15 October.

Other crops in Bismarck, with their dates