When to plant eggplants in Dundalk: 17 July – 31 July

In Dundalk, eggplant: sow for seedlings from 27 April to 1 June; plant into a greenhouse from 26 June to 31 July; plant out into open ground from 17 July to 31 July. For plants and seeds, the places nearby include Hardys (farm supply, 2 km); addresses and opening hours are below.

Eggplant in Dundalk: soil, season and weather

In Dundalk the soil, not frost, sets the date: the last frost is over around 20 March, but the top 7 cm of soil reaches 18 °C — the minimum on the eggplant card — only around 17 July, 119 days later. 126 days separate planting out (17 July) from the first autumn frost (20 November); the card's 70 days to the first harvest leave 56 for picking, so a start 8 weeks late would still fit.

Last spring frost	20 March
Top 7 cm of soil at 18 °C	17 July, 119 days after the last frost
Into an unheated greenhouse	26 June – 31 July; June outside: 10.6 °C at night, 17.6 °C by day; card 21–29 °C
First autumn frost	20 November, 126 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	25 September – 9 October
Days left for picking	56
Daylight	16:07 on 18 May, 16:34 on 17 July
Watering outdoors when fruiting (card)	every 3 days; the driest month, July, has 15 rainy days

The same dates in Dundalk hold for Cucumber, Bell Pepper, Zucchini, Pumpkin and Watermelon.

Eggplant in Dundalk: care after planting

Planted on 17 July: in the first weeks water every 4 days.

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

17 July — feed: balanced (NPK)
14 August — feed: nitrogen

Pests and diseases of eggplant to watch for:

Dates count from the first planting day of the window above; a later planting moves them by as many days.

Weather in Dundalk during the eggplant season

No month of the season averages above the eggplant card's 21–29 °C by day; the warmest, July, averages 19 °C. Months that stay below 21 °C even by day on average: July–November (10–19 °C). Nights average below 21 °C in every month of the season, from 5 °C to 12.1 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
July	19	12.1	88	15	16:39
August	18.7	12	98	15	14:55
September	16.5	10.1	103	15	12:46
October	13.5	8.2	98	15	10:38
November	10	5	91	14	8:35

ERA5 2016–2025, Open-Meteo

Eggplant in nearby cities

All the nearest cities on our list plant eggplant earlier than Dundalk; the closest date is in Dublin, 1 day earlier.

City	Distance	Date	Difference
Dublin	73 km	16 July – 4 August	1 day earlier
Belfast	73 km	7 July – 30 July	10 days earlier
Athlone	120 km	13 July – 6 August	4 days earlier
Derry	126 km	13 July – 1 August	4 days earlier
Letterkenny	137 km	7 July – 8 August	10 days earlier
Sligo	138 km	30 June – 1 August	17 days earlier

Where to buy eggplant plants and seeds near Dundalk

Buy plants ready to set out from 17 July to 31 July (from 26 June to 31 July for an unheated greenhouse); seed for raising your own is sown from 27 April to 1 June. Within 15 km of Dundalk OpenStreetMap lists 2 garden centres, 2 farm-supply shops and 2 farm shops (collected 28 October 2026).

Hardys — farm supply
Lisdoo, Newry Road, Dundalk · 2 km · joesphwallsonline.com
Dundalk Garden Centre — garden centre
2 km
Carrive Grove Garden Centre — garden centre
10 km
Corderry Fruit Farm — farm supply
9 km · corderry.ie

Each window starts on the Greenly calendar date and ends on the last day that still leaves the crop’s days to harvest (from its card) before the average first autumn frost, plus six weeks of picking for crops harvested over weeks (tomatoes, peppers, aubergines, cucumbers, courgettes, pumpkins, watermelons, beans) — our rule; earlier in the window is safer.

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