When to plant tomatoes in Fairbanks: 8 June – 15 July

In Fairbanks, tomato: sow for seedlings from 27 March to 24 May; plant into a greenhouse from 18 May to 15 July; plant out into open ground from 8 June to 15 July. For plants and seeds, the places nearby include The Plant Kingdom Greenhouse and Nursery, Inc (garden centre, 6 km) and Ann's Greenhouses (garden centre, 12 km); addresses and opening hours are below.

Tomato in Fairbanks: soil, season and weather

In Fairbanks 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 8 June, 31 days later. 107 days separate planting out (8 June) from the first autumn frost (23 September); the card's 70 days to the first harvest leave 37 for picking, so a start 5 weeks late would still fit.

Last spring frost	8 May
Top 7 cm of soil at 15 °C	8 June, 31 days after the last frost
Into an unheated greenhouse	18 May – 15 July; May outside: 4.1 °C at night, 16.4 °C by day; card 16–27 °C
First autumn frost	23 September, 107 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	17 August – 23 September
Days left for picking	37
Daylight	15:21 on 17 April, 21:12 on 8 June
Watering outdoors when fruiting (card)	every 3 days; the driest month, June, has 9 rainy days

Tomato in Fairbanks: care after planting

Planted on 8 June: in the first weeks water every 4 days.

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

8 June — feed: balanced (NPK)
6 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 Fairbanks during the tomato season

No month of the season averages above the tomato card's 16–27 °C by day; the warmest, July, averages 23.2 °C. Months that stay below 16 °C even by day on average: September (13.4 °C). Nights average below 16 °C in every month of the season, from 4.7 °C to 13.2 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	22.3	11.1	46	9	21:41
July	23.2	13.2	75	12	20:12
August	19.1	10.5	93	16	16:39
September	13.4	4.7	47	11	13:10

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Fairbanks, Vancouver is 11 days earlier and Juneau 25 days later.

City	Distance	Date	Difference
Anchorage	417 km	22 June – 24 June	14 days later
Whitehorse	788 km	29 June – 20 July	21 days later
Juneau	1,008 km	3 July – 28 July	25 days later
Yellowknife	1,648 km	22 June – 26 July	14 days later
Vancouver	2,252 km	28 May – 28 July	11 days earlier
Edmonton	2,275 km	3 June – 16 June	5 days earlier

Where to buy tomato plants and seeds near Fairbanks

Buy plants ready to set out from 8 June to 15 July (from 18 May to 15 July for an unheated greenhouse); seed for raising your own is sown from 27 March to 24 May. Within 15 km of Fairbanks OpenStreetMap lists 2 garden centres and 2 markets (collected 28 October 2026).

The Plant Kingdom Greenhouse and Nursery, Inc — garden centre
Fideler Road 620, 99712 Fairbanks · Mon–Sun 09:00–19:00 · 6 km · theplantkingdom.com
Ann's Greenhouses — garden centre
Sheep Creek Road 780, 99709 Fairbanks · 12 km
Tanana Valley Farmers Market — market
College Road 2600, 99708 Fairbanks · 4 km · tvfmarket.com
Birch Hill Market — market
4 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