GreenlyWhen to plant garlic in Letterkenny: 29 October – end of December
In Letterkenny, garlic: plant from 29 October to the end of December. For planting stock, the places nearby include Gary's Petworld and Garden Centre (garden centre, 2 km); addresses and opening hours are below.
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.
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Garlic in Letterkenny: soil, season and weather
Garlic goes into the ground in Letterkenny from 29 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 2.7 °C.
| Planting | 29 October – end of December |
|---|---|
| First autumn frost | 28 November |
| Coldest nights | January, 2.7 °C |
| Soil back at 5 °C in spring | 13 January |
| Harvest (card) | about 8 months after planting: July |
| Daylight | 9:34 on 29 October |
| Daylight at the winter solstice | 7:11 |
The same dates in Letterkenny hold for Tulip, Daffodil, Crocus and Hyacinth.
Garlic in Letterkenny: care after planting
Planted on 29 October: in the first weeks water every 7 days.
Feeding, by the card’s schedule from that day:
- 29 October — feed: nitrogen
- 26 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
All the nearest cities on our list plant garlic earlier than Letterkenny; the closest date is in Athlone, 2 days earlier.
| City | Distance | Date | Difference |
|---|---|---|---|
| Derry | 26 km | 22 October – end of December | 7 days earlier |
| Sligo | 91 km | 22 October – end of December | 7 days earlier |
| Belfast | 122 km | 20 October – end of December | 9 days earlier |
| Dundalk | 137 km | 21 October – end of December | 8 days earlier |
| Athlone | 172 km | 27 October – end of December | 2 days earlier |
| Dublin | 203 km | 25 October – end of December | 4 days earlier |
Where to buy garlic for planting in Letterkenny
Planting stock goes into the ground from 29 October to the end of December; buy it before that. Within 15 km of Letterkenny OpenStreetMap lists 3 garden centres and 1 market (collected 28 October 2026).
- Gary's Petworld and Garden Centre — garden centre
Mon–Fri 09:00–18:00 · 2 km - Alcorns — garden centre
2 km · alcorns.ie - Raphoe Garden Centre — garden centre
12 km - Market Square — market
2 km
Places: © OpenStreetMap contributors, ODbL.
- How to grow garlic
- All frost dates and weather of Letterkenny
- Shops and markets: Letterkenny
- Selling a surplus in Ireland
- When to plant garlic in Ireland
- Letterkenny: #278 of 801 by frost-free season
- Moon planting calendar for November 2026
- How we calculate the dates
Questions
When to plant garlic in Letterkenny?
In Letterkenny, garlic: plant from 29 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 Letterkenny?
Last spring frost around 30 March, first autumn frost around 28 November.
Other crops in Letterkenny, with their dates
- Tomato · 7 June – 8 August
- Cucumber · 7 July – 13 September
- Bell Pepper · 7 July – 8 August
- Eggplant · 7 July – 8 August
- Zucchini · 7 July – 11 September
- Pumpkin · 7 July – 3 August
- Watermelon · 7 July – 19 August
- Peas · 9 March – 15 September
- Tulip · 29 October – end of December
- Daffodil · 29 October – end of December
- Crocus · 29 October – end of December
- Hyacinth · 29 October – end of December
