When to plant tomatoes in Eugene: 22 May – 9 July

In Eugene, tomato: sow for seedlings from 10 March to 18 May; plant into a greenhouse from 1 May to 9 July; plant out into open ground from 22 May to 9 July. For plants and seeds, the places nearby include Oregon's Constant Gardener (garden centre, 1 km) and Eugene Garden & Harvest Center (garden centre, 3 km); addresses and opening hours are below.

Tomato in Eugene: soil, season and weather

In Eugene the soil, not frost, sets the date: the last frost is over around 15 April, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 22 May, 37 days later.

Last spring frost	15 April
Top 7 cm of soil at 15 °C	22 May, 37 days after the last frost
Into an unheated greenhouse	1 May – 9 July; May outside: 7.1 °C at night, 20.1 °C by day; card 16–27 °C
First autumn frost	29 October, 160 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	31 July – 17 September
Days left for picking	90
Daylight	12:41 on 31 March, 14:59 on 22 May
Watering outdoors when fruiting (card)	every 3 days; the driest month, July, has 1 rainy day

Tomato in Eugene: care after planting

Planted on 22 May: in the first weeks water every 4 days.

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

22 May — feed: balanced (NPK)
19 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 Eugene during the tomato season

Days average above the tomato card's 16–27 °C in July (29.2 °C) and August (29.9 °C). Nights average below 16 °C in every month of the season, from 6.4 °C to 12.7 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	20.1	7.1	82	11	14:44
June	24.1	9.9	54	7	15:28
July	29.2	12.2	5	1	15:11
August	29.9	12.7	8	2	14:03
September	25.1	10.2	64	7	12:34
October	18	6.4	132	12	11:04

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Eugene, Redding is 38 days earlier and Olympia 9 days later.

City	Distance	Date	Difference
Salem	98 km	14 May – 28 July	8 days earlier
Portland	166 km	15 May – 2 August	7 days earlier
Medford	190 km	30 May – 30 June	8 days later
Olympia	332 km	31 May – 26 July	9 days later
Redding	390 km	14 April – 21 August	38 days earlier
Seattle	399 km	17 May – 4 August	5 days earlier

Where to buy tomato plants and seeds near Eugene

Buy plants ready to set out from 22 May to 9 July (from 1 May to 9 July for an unheated greenhouse); seed for raising your own is sown from 10 March to 18 May. Within 15 km of Eugene OpenStreetMap lists 11 garden centres, 5 farm-supply shops, 4 plant nurseries, 8 markets and 4 farm shops (collected 29 October 2026).

Johnson Brothers Garden Market — garden centre
Coburg Road 91444, 97408 Eugene · Tue–Sun 10:00–17:00 · 10 km · jbgardenmarket.com
Eugene Garden & Harvest Center — garden centre
West 11th Avenue 3825, 97402 Eugene · Mon–Fri 10:00–18:00; Sat 11:00–17:00 · 3 km · gardenandharvest.com
Walmart Garden Center — garden centre
Olympic Street 2659, 97477 Springfield · 24/7 · 11 km
Oregon's Constant Gardener — garden centre
Garfield Street 990, 97402 Eugene · 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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