When to plant tomatoes in Elko: 15 May – 23 June

In Elko, tomato: sow for seedlings from 3 March to 2 May; plant into a greenhouse from 24 April to 23 June; plant out into open ground from 15 May to 23 June.

Tomato in Elko: soil, season and weather

In Elko the soil, not frost, sets the date: the last frost is over around 6 May, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 15 May, 9 days later.

Last spring frost	6 May
Top 7 cm of soil at 15 °C	15 May, 9 days after the last frost
Into an unheated greenhouse	24 April – 23 June; April outside: 0.7 °C at night, 13.7 °C by day; card 16–27 °C
First autumn frost	13 October, 151 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	24 July – 1 September
Days left for picking	81
Daylight	12:18 on 24 March, 14:27 on 15 May
Watering outdoors when fruiting (card)	every 3 days; the driest month, July, has 1 rainy day

Tomato in Elko: care after planting

Planted on 15 May: in the first weeks water every 4 days.

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

15 May — feed: balanced (NPK)
12 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 Elko during the tomato season

Days average above the tomato card's 16–27 °C in July (32.1 °C) and August (30.4 °C). Nights average below 16 °C in May, June and September, October (3.5–12.2 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	18.9	5.8	38	8	14:27
June	27	12.2	11	2	15:05
July	32.1	17.4	4	1	14:50
August	30.4	16.1	11	3	13:50
September	24.9	10.8	22	3	12:31
October	16.3	3.5	25	4	11:10

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Elko, Las Vegas is 63 days earlier and Idaho Falls 3 days later.

City	Distance	Date	Difference
Boise	310 km	27 April – 7 July	18 days earlier
Salt Lake City	324 km	7 May – 6 July	8 days earlier
Reno	375 km	23 April – 8 July	22 days earlier
Carson City	391 km	8 May – 2 July	7 days earlier
Idaho Falls	425 km	18 May – 24 June	3 days later
Las Vegas	522 km	13 March – 22 August	63 days earlier

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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