When to plant tomatoes in Lausanne: 2 June – 31 July

In Lausanne, tomato: sow for seedlings from 21 March to 9 June; plant into a greenhouse from 12 May to 31 July; plant out into open ground from 2 June to 31 July. For plants and seeds, the places nearby include Beast Garden (garden centre, 1 km) and Services parcs et domaines, établissement horticole (plant nursery, 3 km); addresses and opening hours are below.

Tomato in Lausanne: soil, season and weather

In Lausanne the soil, not frost, sets the date: the last frost is over around 12 April, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 2 June, 51 days later.

Last spring frost	12 April
Top 7 cm of soil at 15 °C	2 June, 51 days after the last frost
Into an unheated greenhouse	12 May – 31 July; May outside: 7.6 °C at night, 15.6 °C by day; card 16–27 °C
First autumn frost	20 November, 171 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	11 August – 9 October
Days left for picking	101
Daylight	13:20 on 11 April, 15:35 on 2 June
Watering outdoors when fruiting (card)	every 3 days; the driest month, August, has 12 rainy days

Tomato in Lausanne: care after planting

Planted on 2 June: in the first weeks water every 4 days.

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

2 June — feed: balanced (NPK)
30 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 Lausanne during the tomato season

No month of the season averages above the tomato card's 16–27 °C by day; the warmest, July, averages 22.7 °C. Months that stay below 16 °C even by day on average: October (13.9 °C) and November (7.8 °C). Nights average below 16 °C in every month of the season, from 2.8 °C to 15 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	20.9	12.9	148	16	15:48
July	22.7	14.8	144	15	15:29
August	22.7	15	131	12	14:14
September	18.4	11.8	140	14	12:36
October	13.9	7.8	134	12	10:58
November	7.8	2.8	148	15	9:26

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Lausanne, Neuchâtel is 19 days earlier and Sion 19 days later.

City	Distance	Date	Difference
Fribourg	50 km	5 June – 17 July	3 days later
Geneva	52 km	28 May – 28 July	5 days earlier
Neuchâtel	57 km	14 May – 8 August	19 days earlier
Sion	65 km	21 June – 29 June	19 days later
Annecy	78 km	2 June – 25 July	same day
Bern	79 km	3 June – 14 July	1 day later

Where to buy tomato plants and seeds near Lausanne

Buy plants ready to set out from 2 June to 31 July (from 12 May to 31 July for an unheated greenhouse); seed for raising your own is sown from 21 March to 9 June. Within 15 km of Lausanne OpenStreetMap lists 5 garden centres, 4 farm-supply shops, 5 plant nurseries, 19 markets and 58 farm shops (collected 27 October 2026).

Pépinières Baudat SA — garden centre
Chemin de Camarès 1, 1032 Vernand-sur-Lausanne · Mon–Fri 09:00–12:00, Mon–Fri 13:15–17:30 · 6 km · baudat.ch
Landi — garden centre
Chemin du Curbit 1, 1136 Bussy-Chardonney · Mon–Fri 08:00–18:30; Sat 08:00–17:00 · 14 km · landi.swiss
Beast Garden — garden centre
Mon–Fri 13:00–19:00; Sat 13:00–18:00 · 1 km
Services parcs et domaines, établissement horticole — plant nursery
Avenue du Chablais 46, 1007 Lausanne · 3 km · lausanne.ch

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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