When to plant tomatoes in Moncton: 9 June – 15 July

In Moncton, tomato: sow for seedlings from 28 March to 24 May; plant into a greenhouse from 19 May to 15 July; plant out into open ground from 9 June to 15 July. For plants and seeds, the places nearby include Hardy's Produce (farm shop, 2 km) and MacArthur's Nurseries Inc. (garden centre, 3 km); addresses and opening hours are below.

Tomato in Moncton: soil, season and weather

In Moncton the soil, not frost, sets the date: the last frost is over around 1 May, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 9 June, 39 days later.

Last spring frost	1 May
Top 7 cm of soil at 15 °C	9 June, 39 days after the last frost
Into an unheated greenhouse	19 May – 15 July; May outside: 5.8 °C at night, 15.9 °C by day; card 16–27 °C
First autumn frost	4 November, 148 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	18 August – 23 September
Days left for picking	78
Daylight	13:41 on 18 April, 15:40 on 9 June
Watering outdoors when fruiting (card)	every 3 days; the driest month, September, has 9 rainy days

Tomato in Moncton: care after planting

Planted on 9 June: in the first weeks water every 4 days.

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

9 June — feed: balanced (NPK)
7 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 Moncton during the tomato season

No month of the season averages above the tomato card's 16–27 °C by day; the warmest, July, averages 25.3 °C. Months that stay below 16 °C even by day on average: October (14.5 °C) and November (6.7 °C). Nights average below 16 °C in June and August–November (-0.3–15.7 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	21.4	12	106	12	15:44
July	25.3	16.3	103	12	15:26
August	24.6	15.7	97	11	14:12
September	20.4	11.9	87	9	12:36
October	14.5	6.6	103	11	10:59
November	6.7	-0.3	123	12	9:29

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Moncton, Augusta is 13 days earlier and Halifax 10 days later.

City	Distance	Date	Difference
Charlottetown	130 km	13 June – 13 July	4 days later
Fredericton	145 km	5 June – 8 July	4 days earlier
Halifax	186 km	19 June – 20 July	10 days later
Bangor	338 km	31 May – 14 July	9 days earlier
Augusta	437 km	27 May – 14 July	13 days earlier
Quebec City	497 km	27 May – 8 July	13 days earlier

Where to buy tomato plants and seeds near Moncton

Buy plants ready to set out from 9 June to 15 July (from 19 May to 15 July for an unheated greenhouse); seed for raising your own is sown from 28 March to 24 May. Within 15 km of Moncton OpenStreetMap lists 1 garden centre, 2 markets and 1 farm shop (collected 20 October 2026).

MacArthur's Nurseries Inc. — garden centre
McLaughlin Drive 232 · Mon–Sat 09:00–18:00; Sun 10:00–17:00 · 3 km · macarthursnurseries.com
Marché Moncton Market — market
Westmorland Street 120, Moncton · Sat 08:00–14:00; Mon–Fri 10:00–16:00 · 2 km · marchemonctonmarket.ca
Dieppe Market — market
Gauvin Road 232 · Wed–Fri 10:00–18:00; Sat 08:00–13:00 · 4 km · marchedieppemarket.com
Hardy's Produce — farm shop
Mountain Road 1063, E1C 2S9 Moncton · Mon–Sat 09:00–20:00; Sun 00:00–18:00 · 2 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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