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When to plant garlic in Sioux Falls: 21 September – 16 November

In Sioux Falls, garlic: plant from 21 September to about 16 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 Sioux Falls: soil, season and weather

Garlic goes into the ground in Sioux Falls from 21 September to about 16 November; the window opens a month before the first autumn frost. Nights then average below 0 °C in November–March; the coldest, January, averages -11 °C.

Planting21 September – 16 November
First autumn frost21 October
Coldest nightsJanuary, -11 °C
Soil back at 5 °C in spring30 March
Harvest (card)about 8 months after planting: May
Daylight12:16 on 21 September
Daylight at the winter solstice8:56

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

Garlic in Sioux Falls: care after planting

Planted on 21 September: in the first weeks water every 7 days.

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

  • 21 September — feed: nitrogen
  • 19 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

All the nearest cities on our list plant garlic later than Sioux Falls; the closest date is in Pierre, 3 days later.

CityDistanceDateDifference
Omaha262 km26 September – 30 November5 days later
Pierre302 km24 September – 19 November3 days later
Lincoln304 km28 September – 7 December7 days later
Minneapolis319 km24 September – 10 November3 days later
Grand Island321 km27 September – 1 December6 days later
Des Moines334 km27 September – 29 November6 days later

Where to buy garlic for planting in Sioux Falls

Planting stock goes into the ground from 21 September to about 16 November; buy it before that. Within 15 km of Sioux Falls OpenStreetMap lists 1 garden centre, 5 farm-supply shops, 2 markets and 1 farm shop (collected 20 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant garlic in Sioux Falls?

In Sioux Falls, garlic: plant from 21 September to about 16 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 Sioux Falls?

Last spring frost around 24 April, first autumn frost around 21 October.

Other crops in Sioux Falls, with their dates