Greenly Garden
Get the app
EN

When to plant garlic in Ulsan: 17 October – end of December

In Ulsan, garlic: plant from 17 October to the end of December.

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 average daily temperature here stays above 0 °C all winter, and at least two months average 10 °C or less: the cold garlic needs, one to two months at 0–10 °C (RHS). The two-month threshold is our rule of thumb. Sources: UVM Extension, UNH Extension, RHS.

Garlic in Ulsan: soil, season and weather

Garlic goes into the ground in Ulsan from 17 October to the end of December; the window opens a month before the first autumn frost. Nights then average below 0 °C in December–February; the coldest, January, averages -3.5 °C.

Planting17 October – end of December
First autumn frost16 November
Coldest nightsJanuary, -3.5 °C
Soil back at 5 °C in spring10 February
Harvest (card)about 8 months after planting: June
Daylight11:16 on 17 October
Daylight at the winter solstice9:45

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

Garlic in Ulsan: care after planting

Planted on 17 October: in the first weeks water every 7 days.

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

  • 17 October — feed: nitrogen
  • 14 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 Ulsan, Kitakyushu is 16 days earlier and Gwangju 7 days later.

CityDistanceDateDifference
Busan47 km23 October – end of December6 days later
Daegu74 km22 October – end of December5 days later
Daejeon195 km13 October – 5 December4 days earlier
Jeonju198 km18 October – 17 December1 day later
Gwangju228 km24 October – end of December7 days later
Kitakyushu234 km1 October – end of December16 days earlier

Where to buy garlic for planting in Ulsan

Planting stock goes into the ground from 17 October to the end of December; buy it before that. Within 15 km of Ulsan OpenStreetMap lists 1 garden centre, 8 markets and 1 farm shop (collected 28 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant garlic in Ulsan?

In Ulsan, garlic: plant from 17 October to the end of December. 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 Ulsan?

Last spring frost around 22 March, first autumn frost around 16 November.

Other crops in Ulsan, with their dates