When to plant tomatoes in Omaha: 26 April – 6 July

In Omaha, tomato: sow for seedlings from 12 February to 15 May; plant into a greenhouse from 5 April to 6 July; plant out into open ground from 26 April to 6 July. For plants and seeds, the places nearby include Great Plains Botanical House (garden centre, 1 km) and The Green House (garden centre, 2 km); addresses and opening hours are below.

Tomato in Omaha: soil, season and weather

In Omaha the soil, not frost, sets the date: the last frost is over around 16 April, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 26 April, 10 days later.

Last spring frost	16 April
Top 7 cm of soil at 15 °C	26 April, 10 days after the last frost
Into an unheated greenhouse	5 April – 6 July; April outside: 5.5 °C at night, 17.3 °C by day; card 16–27 °C
First autumn frost	26 October, 183 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	5 July – 14 September
Days left for picking	113
Daylight	11:26 on 5 March, 13:46 on 26 April
Watering outdoors when fruiting (card)	every 3 days; the driest month, April, has 10 rainy days

Tomato in Omaha: care after planting

Planted on 26 April: in the first weeks water every 4 days.

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

26 April — feed: balanced (NPK)
24 May — 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 Omaha during the tomato season

Days average above the tomato card's 16–27 °C in June (29.8 °C), July (30.5 °C) and August (29 °C). Nights average below 16 °C in April (5.5 °C), May (12.1 °C) and October (8.4 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
April	17.3	5.5	72	10	13:18
May	22.8	12.1	138	14	14:29
June	29.8	18.8	93	10	15:08
July	30.5	20.5	94	10	14:53
August	29	19.2	99	10	13:52
September	26.6	16.3	74	7	12:31
October	18.5	8.4	75	7	11:09

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Omaha, Topeka is 10 days earlier and Sioux Falls 15 days later.

City	Distance	Date	Difference
Lincoln	79 km	23 April – 8 July	3 days earlier
Des Moines	198 km	30 April – 7 July	4 days later
Grand Island	206 km	30 April – 7 July	4 days later
Topeka	249 km	16 April – 9 July	10 days earlier
Sioux Falls	262 km	11 May – 1 July	15 days later
Kansas City	267 km	18 April – 12 July	8 days earlier

Where to buy tomato plants and seeds near Omaha

Buy plants ready to set out from 26 April to 6 July (from 5 April to 6 July for an unheated greenhouse); seed for raising your own is sown from 12 February to 15 May. Within 15 km of Omaha OpenStreetMap lists 8 garden centres, 1 plant nursery, 5 markets and 2 farm shops (collected 20 October 2026).

Indian Creek Nursery — garden centre
North Saddle Creek Road 303, 68131 Omaha · Mon–Fri 09:00–18:00; Sat 09:00–17:00; Sun 11:00–17:00 · 3 km · indiancreeknursery.com
The Green House — garden centre
South 13th Street 1234, 68108 Omaha · 2 km · thegreenhouseomaha.com
Mulhall's Nursery and Garden Center — garden centre
North 120th Street 3615, 68164 Omaha · 14 km · mulhalls.com
Great Plains Botanical House — garden centre
Saint Mary's Avenue 2202, 68105 Omaha · 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.

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