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When to plant garlic in Hiroshima: 26 October – end of December

In Hiroshima, garlic: plant from 26 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 Hiroshima: soil, season and weather

Garlic goes into the ground in Hiroshima from 26 October to the end of December; the window opens a month before the first autumn frost. Nights then average below 0 °C in January, February; the coldest, January, averages -1.8 °C.

Planting26 October – end of December
First autumn frost25 November
Coldest nightsJanuary, -1.8 °C
Soil back at 5 °C in spring27 February
Harvest (card)about 8 months after planting: July
Daylight10:59 on 26 October
Daylight at the winter solstice9:51

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

Garlic in Hiroshima: care after planting

Planted on 26 October: in the first weeks water every 7 days.

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

  • 26 October — feed: nitrogen
  • 23 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 Hiroshima, Kitakyushu is 25 days earlier and Fukuoka 26 days later.

CityDistanceDateDifference
Okayama138 km15 November – end of December20 days later
Kitakyushu155 km1 October – end of December25 days earlier
Fukuoka209 km21 November – end of December26 days later
Kumamoto239 km3 November – end of December8 days later
Osaka281 km17 November – end of December22 days later
Kyoto311 km7 November – end of December12 days later

Where to buy garlic for planting in Hiroshima

Planting stock goes into the ground from 26 October to the end of December; buy it before that. Within 15 km of Hiroshima OpenStreetMap lists 2 garden centres, 2 farm-supply shops, 3 markets and 2 farm shops (collected 28 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant garlic in Hiroshima?

In Hiroshima, garlic: plant from 26 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 Hiroshima?

Last spring frost around 9 April, first autumn frost around 25 November.

Other crops in Hiroshima, with their dates