Greenly Garden
Get the app
EN

When to plant garlic in Dundalk: 21 October – end of December

In Dundalk, garlic: plant from 21 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 Dundalk: soil, season and weather

Garlic goes into the ground in Dundalk from 21 October to the end of December; the window opens a month before the first autumn frost. No month averages below 0 °C at night; the coldest nights, in January, average 2.5 °C.

Planting21 October – end of December
First autumn frost20 November
Coldest nightsJanuary, 2.5 °C
Soil back at 5 °C in springalready in the first week of January
Harvest (card)about 8 months after planting: June
Daylight10:13 on 21 October
Daylight at the winter solstice7:22

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

Garlic in Dundalk: care after planting

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

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

  • 21 October — feed: nitrogen
  • 18 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 Dundalk, Belfast is 1 day earlier and Letterkenny 8 days later.

CityDistanceDateDifference
Dublin73 km25 October – end of December4 days later
Belfast73 km20 October – end of December1 day earlier
Athlone120 km27 October – end of December6 days later
Derry126 km22 October – end of December1 day later
Letterkenny137 km29 October – end of December8 days later
Sligo138 km22 October – end of December1 day later

Where to buy garlic for planting in Dundalk

Planting stock goes into the ground from 21 October to the end of December; buy it before that. Within 15 km of Dundalk OpenStreetMap lists 2 garden centres, 2 farm-supply shops and 2 farm shops (collected 28 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant garlic in Dundalk?

In Dundalk, garlic: plant from 21 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 Dundalk?

Last spring frost around 20 March, first autumn frost around 20 November.

Other crops in Dundalk, with their dates