When to plant tomatoes in Saguenay: 10 June – 2 July

In Saguenay, tomato: sow for seedlings from 29 March to 11 May; plant into a greenhouse from 20 May to 2 July; plant out into open ground from 10 June to 2 July.

Tomato in Saguenay: soil, season and weather

In Saguenay the soil, not frost, sets the date: the last frost is over around 14 May, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 10 June, 27 days later.

Last spring frost	14 May
Top 7 cm of soil at 15 °C	10 June, 27 days after the last frost
Into an unheated greenhouse	20 May – 2 July; May outside: 4.4 °C at night, 15.9 °C by day; card 16–27 °C
First autumn frost	22 October, 134 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	19 August – 10 September
Days left for picking	64
Daylight	13:52 on 19 April, 16:01 on 10 June
Watering outdoors when fruiting (card)	every 3 days; the driest month, September, has 13 rainy days

Tomato in Saguenay: care after planting

Planted on 10 June: in the first weeks water every 4 days.

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

10 June — feed: balanced (NPK)
8 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 Saguenay during the tomato season

No month of the season averages above the tomato card's 16–27 °C by day; the warmest, July, averages 24.2 °C. Months that stay below 16 °C even by day on average: October (11.9 °C). Nights average below 16 °C in every month of the season, from 4.4 °C to 14.8 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	21.7	11.4	138	14	16:05
July	24.2	14.8	173	16	15:44
August	23.1	14.1	144	14	14:23
September	18.9	10	118	13	12:39
October	11.9	4.4	126	14	10:54

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

All the nearest cities on our list plant tomato earlier than Saguenay; the closest date is in Fredericton, 5 days earlier.

City	Distance	Date	Difference
Quebec City	180 km	27 May – 8 July	14 days earlier
Trois-Rivières	257 km	25 May – 9 July	16 days earlier
Sherbrooke	343 km	27 May – 7 July	14 days earlier
Montreal	377 km	21 May – 12 July	20 days earlier
Fredericton	432 km	5 June – 8 July	5 days earlier
Bangor	434 km	31 May – 14 July	10 days earlier

Where to buy tomato plants and seeds near Saguenay

Buy plants ready to set out from 10 June to 2 July (from 20 May to 2 July for an unheated greenhouse); seed for raising your own is sown from 29 March to 11 May. Within 15 km of Saguenay OpenStreetMap lists 2 markets (collected 20 October 2026).

Halles centrales — market
1 km
Les Halles de la Rivière — market
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.

Questions