When to plant zucchini in Potsdam: 3 June – 4 September

In Potsdam, zucchini: sow for seedlings from 22 April to 14 August; plant into a greenhouse from 13 May to 4 September; plant out into open ground from 3 June to 4 September.

Zucchini in Potsdam: soil, season and weather

In Potsdam the soil, not frost, sets the date: the last frost is over around 5 April, but the top 7 cm of soil reaches 18 °C — the minimum on the zucchini card — only around 3 June, 59 days later.

Last spring frost	5 April
Top 7 cm of soil at 18 °C	3 June, 59 days after the last frost
First autumn frost	21 November, 171 days after the start
Days in the bed to the first harvest (card)	36
First harvest, if planted in this window	9 July – 10 October
Days left for picking	135
Daylight	15:36 on 13 May, 16:31 on 3 June
Watering outdoors when fruiting (card)	every 3 days; the driest month, September, has 7 rainy days

The same dates in Potsdam hold for Cucumber, Bell Pepper, Eggplant, Pumpkin and Watermelon.

Zucchini in Potsdam: care after planting

Planted on 3 June: in the first weeks water every 4 days.

Pests and diseases of zucchini to watch for:

Weather in Potsdam during the zucchini season

About 327 mm of rain falls in the season; September is the driest month (41 mm) and June the wettest (68 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	24.2	14.3	68	10	16:47
July	24.2	15.2	68	11	16:21
August	24.7	15.6	49	8	14:45
September	20.8	12.3	41	7	12:44
October	14.9	8.4	57	11	10:43
November	8.5	3.5	44	11	8:48

ERA5 2016–2025, Open-Meteo

Zucchini in nearby cities

Around Potsdam, Berlin is 3 days earlier and Leipzig 2 days later.

City	Distance	Date	Difference
Berlin	27 km	31 May – 2 September	3 days earlier
Magdeburg	102 km	3 June – 1 September	same day
Leipzig	127 km	5 June – 31 August	2 days later
Szczecin	152 km	5 June – 31 August	2 days later
Dresden	157 km	5 June – 1 September	2 days later
Zielona Góra	175 km	1 June – 27 August	2 days earlier

Where to buy zucchini plants and seeds near Potsdam

Buy plants ready to set out from 3 June to 4 September (from 13 May to 4 September for an unheated greenhouse); seed for raising your own is sown from 22 April to 14 August. Within 15 km of Potsdam OpenStreetMap lists 16 garden centres, 1 farm-supply shop, 8 plant nurseries, 12 markets and 28 farm shops (collected 28 October 2026).

Markt Schlachtensee — market
Tue, Fri 08:00–14:00 · 12 km · marktschlachtensee.de
Markt am Nauener Tor — market
Sat 09:00–16:00; public holidays closed · 0 km · markt-am-nauener-tor.de
Zehlendorfer Wochenmarkt — market
Sat 09:00–16:00 · 14 km · zehlendorfer-wochenmarkt.de
Teltower Frischemarkt — market
Zeppelinufer, 14513 Teltow · Tue 07:00–14:00 · 14 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.

Questions