When to plant tomatoes in Kilkenny: 16 June – 31 July

In Kilkenny, tomato: sow for seedlings from 4 April to 9 June; plant into a greenhouse from 26 May to 31 July; plant out into open ground from 16 June to 31 July. For plants and seeds, the places nearby include Woodie's (garden centre, 2 km) and Agristore (farm supply, 3 km); addresses and opening hours are below.

Tomato in Kilkenny: soil, season and weather

In Kilkenny the soil, not frost, sets the date: the last frost is over around 7 April, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 16 June, 70 days later.

Last spring frost	7 April
Top 7 cm of soil at 15 °C	16 June, 70 days after the last frost
Into an unheated greenhouse	26 May – 31 July; May outside: 7.4 °C at night, 15.3 °C by day; card 16–27 °C
First autumn frost	20 November, 157 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	25 August – 9 October
Days left for picking	87
Daylight	14:34 on 25 April, 16:50 on 16 June
Watering outdoors when fruiting (card)	every 3 days; the driest month, June, has 15 rainy days

Tomato in Kilkenny: care after planting

Planted on 16 June: in the first weeks water every 4 days.

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

16 June — feed: balanced (NPK)
14 July — feed: nitrogen

Pests and diseases of tomato 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 Kilkenny during the tomato season

No month of the season averages above the tomato card's 16–27 °C by day; the warmest, July, averages 18.9 °C. Months that stay below 16 °C even by day on average: October (13.1 °C) and November (9.5 °C). Nights average below 16 °C in every month of the season, from 4.6 °C to 11.8 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	17.7	10.2	76	15	16:50
July	18.9	11.8	81	15	16:24
August	18.6	11.5	90	15	14:46
September	16.2	9.8	99	14	12:44
October	13.1	7.5	113	15	10:42
November	9.5	4.6	97	15	8:46

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

All the nearest cities on our list plant tomato earlier than Kilkenny; the closest date is in Dublin, 4 days earlier.

City	Distance	Date	Difference
Waterford	44 km	30 May – 31 July	17 days earlier
Limerick	93 km	2 June – 1 August	14 days earlier
Athlone	97 km	2 June – 6 August	14 days earlier
Dublin	102 km	12 June – 4 August	4 days earlier
Cork	118 km	10 June – 1 August	6 days earlier
Galway	139 km	31 May – 8 August	16 days earlier

Where to buy tomato plants and seeds near Kilkenny

Buy plants ready to set out from 16 June to 31 July (from 26 May to 31 July for an unheated greenhouse); seed for raising your own is sown from 4 April to 9 June. Within 15 km of Kilkenny OpenStreetMap lists 5 garden centres, 12 farm-supply shops and 5 farm shops (collected 20 October 2026).

Woodie's — garden centre
Kilkenny Retail and Business Park, Kilkenny · Mon–Wed 09:00–19:00 · 2 km · woodies.ie
Agristore — farm supply
Mon–Fri 09:00–17:30; Sat 10:00–14:00 · 3 km
Farm & Industrial Supplies — farm supply
Mon–Fri 09:00–13:00, 14:00–18:00; Sat 09:00–13:00 · 3 km
Tirlán Farmlife — farm supply
Mon–Fri 09:30–17:30; Sat 09:00–13:00 · 14 km

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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