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When to plant garlic in Seoul: 7 October – 26 November

In Seoul, garlic: plant from 7 October to about 26 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 Seoul: soil, season and weather

Garlic goes into the ground in Seoul from 7 October to about 26 November; the window opens a month before the first autumn frost. Nights then average below 0 °C in December–February; the coldest, January, averages -7.1 °C.

Planting7 October – 26 November
First autumn frost6 November
Coldest nightsJanuary, -7.1 °C
Soil back at 5 °C in spring8 March
Harvest (card)about 8 months after planting: June
Daylight11:35 on 7 October
Daylight at the winter solstice9:34

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

Garlic in Seoul: care after planting

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

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

  • 7 October — feed: nitrogen
  • 4 November — 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 Seoul, Chuncheon is 6 days earlier and Gwangju 17 days later.

CityDistanceDateDifference
Chuncheon74 km1 October – 22 November6 days earlier
Daejeon139 km13 October – 5 December6 days later
Gangneung169 km22 October – end of December15 days later
Jeonju194 km18 October – 17 December11 days later
Daegu236 km22 October – end of December15 days later
Gwangju266 km24 October – end of December17 days later

Where to buy garlic for planting in Seoul

Planting stock goes into the ground from 7 October to about 26 November; buy it before that. Within 15 km of Seoul OpenStreetMap lists 1 garden centre, 2 plant nurseries and 85 markets (collected 28 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant garlic in Seoul?

In Seoul, garlic: plant from 7 October to about 26 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 Seoul?

Last spring frost around 29 March, first autumn frost around 6 November.

Other crops in Seoul, with their dates