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When to plant garlic in Pierre: 24 September – 19 November

In Pierre, garlic: plant from 24 September to about 19 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 Pierre: soil, season and weather

Garlic goes into the ground in Pierre from 24 September to about 19 November; the window opens a month before the first autumn frost. Nights then average below 0 °C in November–March; the coldest, January, averages -10.3 °C.

Planting24 September – 19 November
First autumn frost24 October
Coldest nightsJanuary, -10.3 °C
Soil back at 5 °C in spring3 April
Harvest (card)about 8 months after planting: May
Daylight12:07 on 24 September
Daylight at the winter solstice8:51

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

Garlic in Pierre: care after planting

Planted on 24 September: in the first weeks water every 7 days.

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

  • 24 September — feed: nitrogen
  • 22 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 Pierre, Rapid City is 12 days earlier and Grand Island 3 days later.

CityDistanceDateDifference
Rapid City233 km12 September – 28 November12 days earlier
Bismarck274 km15 September – 4 November9 days earlier
Sioux Falls302 km21 September – 16 November3 days earlier
Fargo391 km16 September – 4 November8 days earlier
Grand Island416 km27 September – 1 December3 days later
Grand Forks467 km16 September – 31 October8 days earlier

Where to buy garlic for planting in Pierre

Planting stock goes into the ground from 24 September to about 19 November; buy it before that. Within 15 km of Pierre OpenStreetMap lists 1 market (collected 28 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant garlic in Pierre?

In Pierre, garlic: plant from 24 September to about 19 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 Pierre?

Last spring frost around 26 April, first autumn frost around 24 October.

Other crops in Pierre, with their dates