When to plant tomatoes in Regina: 24 May – 16 June

In Regina, tomato: sow for seedlings from 12 March to 25 April; plant into a greenhouse from 3 May to 16 June; plant out into open ground from 24 May to 16 June. For plants and seeds, the places nearby include Succulicious Studio (garden centre, 1 km) and The Flower Hut (garden centre, 3 km); addresses and opening hours are below.

Tomato in Regina: soil, season and weather

In Regina 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 24 May, 10 days later.

Last spring frost	14 May
Top 7 cm of soil at 15 °C	24 May, 10 days after the last frost
Into an unheated greenhouse	3 May – 16 June; May outside: 5.8 °C at night, 19.4 °C by day; card 16–27 °C
First autumn frost	6 October, 135 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	2 August – 25 August
Days left for picking	65
Daylight	12:57 on 2 April, 15:51 on 24 May
Watering outdoors when fruiting (card)	every 3 days; the driest month, October, has 7 rainy days

Tomato in Regina: care after planting

Planted on 24 May: in the first weeks water every 4 days.

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

24 May — feed: balanced (NPK)
21 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 Regina during the tomato season

No month of the season averages above the tomato card's 16–27 °C by day; the warmest, July, averages 26 °C. Months that stay below 16 °C even by day on average: October (10.2 °C). Nights average below 16 °C in every month of the season, from 0.6 °C to 14.2 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	19.4	5.8	51	8	15:27
June	23.4	11.5	74	10	16:25
July	26	14.2	55	8	16:02
August	25.4	13.2	54	7	14:34
September	20.7	8.8	40	6	12:41
October	10.2	0.6	36	7	10:48

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Regina, Billings is 13 days earlier and Calgary 10 days later.

City	Distance	Date	Difference
Saskatoon	235 km	30 May – 16 June	6 days later
Bismarck	494 km	22 May – 25 June	2 days earlier
Winnipeg	536 km	24 May – 22 June	same day
Billings	594 km	11 May – 24 June	13 days earlier
Grand Forks	615 km	24 May – 26 June	same day
Calgary	668 km	3 June – 11 June	10 days later

Where to buy tomato plants and seeds near Regina

Buy plants ready to set out from 24 May to 16 June (from 3 May to 16 June for an unheated greenhouse); seed for raising your own is sown from 12 March to 25 April. Within 15 km of Regina OpenStreetMap lists 9 garden centres, 1 farm-supply shop, 1 plant nursery and 3 markets (collected 20 October 2026).

Succulicious Studio — garden centre
Mon–Sat 10:00–17:00; Sun 11:00–16:00 · 1 km · succuliciousstudio.com
Unique Gardens — garden centre
Broad Street N 110 · 3 km
The Flower Hut — garden centre
College Avenue 233 · 3 km
Regina's Farmers Market — market
Victoria Avenue 2190, S4M 0A1 Regina · 1 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