When to plant tomatoes in Sherbrooke: 27 May – 7 July

In Sherbrooke, tomato: sow for seedlings from 15 March to 16 May; plant into a greenhouse from 6 May to 7 July; plant out into open ground from 27 May to 7 July. For plants and seeds, the places nearby include Jardin Floral (garden centre, 5 km) and Jardin Eden (garden centre, 9 km); addresses and opening hours are below.

Tomato in Sherbrooke: soil, season and weather

In Sherbrooke the soil, not frost, sets the date: the last frost is over around 8 May, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 27 May, 19 days later.

Last spring frost	8 May
Top 7 cm of soil at 15 °C	27 May, 19 days after the last frost
Into an unheated greenhouse	6 May – 7 July; May outside: 7 °C at night, 18.1 °C by day; card 16–27 °C
First autumn frost	27 October, 153 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	5 August – 15 September
Days left for picking	83
Daylight	12:58 on 5 April, 15:17 on 27 May
Watering outdoors when fruiting (card)	every 3 days; the driest month, September, has 9 rainy days

Tomato in Sherbrooke: care after planting

Planted on 27 May: in the first weeks water every 4 days.

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

27 May — feed: balanced (NPK)
24 June — 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 Sherbrooke during the tomato season

No month of the season averages above the tomato card's 16–27 °C by day; the warmest, July, averages 25.1 °C. Months that stay below 16 °C even by day on average: October (14 °C). Nights average below 16 °C in May, June and August–October (5.8–15.1 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	18.1	7	96	14	14:52
June	22.5	12.6	129	14	15:39
July	25.1	16.2	142	15	15:20
August	23.7	15.1	132	15	14:09
September	20.3	11.3	73	9	12:35
October	14	5.8	115	13	11:01

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Sherbrooke, Montreal is 6 days earlier and Montpelier 2 days later.

City	Distance	Date	Difference
Trois-Rivières	116 km	25 May – 9 July	2 days earlier
Montreal	132 km	21 May – 12 July	6 days earlier
Montpelier	137 km	29 May – 27 June	2 days later
Burlington	146 km	26 May – 14 July	1 day earlier
Quebec City	165 km	27 May – 8 July	same day
Augusta	206 km	27 May – 14 July	same day

Where to buy tomato plants and seeds near Sherbrooke

Buy plants ready to set out from 27 May to 7 July (from 6 May to 7 July for an unheated greenhouse); seed for raising your own is sown from 15 March to 16 May. Within 15 km of Sherbrooke OpenStreetMap lists 3 garden centres, 2 markets and 5 farm shops (collected 20 October 2026).

Jardin Eden — garden centre
Boulevard Bourque 5316, J1N 1H3 · 9 km · jardineden.ca
Jardin Floral — garden centre
Rue King Est 2750, J1G 5H2 · 5 km
Serres Yargeau — garden centre
Chemin Édouard-Roy 3008 · 14 km
Marché de la Gare — market
1 km · marchedelagare.com

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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