When to plant tomatoes in Stuttgart: 18 May – 19 July

In Stuttgart, tomato: sow for seedlings from 6 March to 28 May; plant into a greenhouse from 27 April to 19 July; plant out into open ground from 18 May to 19 July. For plants and seeds, the places nearby include Hörmann Pflanzen-Center (garden centre, 5 km) and Einkaufsgarten Peter Haag (garden centre, 5 km); addresses and opening hours are below.

Tomato in Stuttgart: soil, season and weather

In Stuttgart the soil, not frost, sets the date: the last frost is over around 19 April, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 18 May, 29 days later.

Last spring frost	19 April
Top 7 cm of soil at 15 °C	18 May, 29 days after the last frost
Into an unheated greenhouse	27 April – 19 July; April outside: 3.9 °C at night, 14.9 °C by day; card 16–27 °C
First autumn frost	8 November, 174 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	27 July – 27 September
Days left for picking	104
Daylight	12:33 on 27 March, 15:22 on 18 May
Watering outdoors when fruiting (card)	every 3 days; the driest month, October, has 12 rainy days

Tomato in Stuttgart: care after planting

Planted on 18 May: in the first weeks water every 4 days.

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

18 May — feed: balanced (NPK)
15 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 Stuttgart during the tomato season

No month of the season averages above the tomato card's 16–27 °C by day; the warmest, August, averages 25 °C. Months that stay below 16 °C even by day on average: November (9.1 °C). Nights average below 16 °C in every month of the season, from 2 °C to 14.4 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	18.7	8.2	91	13	15:15
June	23.9	13.1	88	14	16:08
July	24.9	14.2	78	13	15:47
August	25	14.4	84	12	14:25
September	20.8	10.7	70	11	12:39
October	16	7.1	66	12	10:53
November	9.1	2	66	13	9:13

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Stuttgart, Karlsruhe is 8 days earlier and Augsburg 12 days later.

City	Distance	Date	Difference
Karlsruhe	62 km	10 May – 30 July	8 days earlier
Mannheim	94 km	10 May – 31 July	8 days earlier
Strasbourg	108 km	12 May – 31 July	6 days earlier
Freiburg im Breisgau	132 km	13 May – 27 July	5 days earlier
Augsburg	135 km	30 May – 20 July	12 days later
St. Gallen	152 km	30 May – 29 July	12 days later

Where to buy tomato plants and seeds near Stuttgart

Buy plants ready to set out from 18 May to 19 July (from 27 April to 19 July for an unheated greenhouse); seed for raising your own is sown from 6 March to 28 May. Within 15 km of Stuttgart OpenStreetMap lists 34 garden centres, 2 farm-supply shops, 10 plant nurseries, 28 markets and 99 farm shops (collected 28 October 2026).

Hörmann Pflanzen-Center — garden centre
Korinnaweg 52, 70597 Stuttgart · Mar–Jun: Mon–Fri 08:00–18:00; Mar–Jun: Sat 08:30–16:00; Oct–Nov: Mon–Fri 08:00–18:00; Oct–Nov: Sat 08:30–14:00; Dec–Feb, Jun–Sept: Mon–Fri 08:00–12:30, 13:30–18:00; Jun–Sept: Sat 08:30–14:00; Sept 16–30 closed; public holidays closed · 5 km · hoermann-pflanzen.de
Einkaufsgarten Peter Haag — garden centre
Chemnitzer Straße 23, 70597 Stuttgart · Mon–Fri 09:00–12:30, 14:30–18:00; Sat 08:30–14:00 · 5 km · einkaufsgarten.de
Pflanzen Center Gärtnerei Haag — garden centre
Lerchenfeld 1, 70597 Stuttgart · Mon–Fri 09:00–18:00; Sat 08:00–16:00; public holidays closed · 5 km · gaertnerei-haag.de
Dehner — garden centre
Schwieberdinger Straße 7, 70435 Stuttgart · Mon–Sat 09:00–19:00 · 5 km · dehner.de

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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