When to plant zucchini in Gdynia: 7 June – 2 September

In Gdynia, zucchini: sow for seedlings from 26 April to 12 August; plant into a greenhouse from 17 May to 2 September; plant out into open ground from 7 June to 2 September.

Zucchini in Gdynia: soil, season and weather

In Gdynia the soil, not frost, sets the date: the last frost is over around 13 April, but the top 7 cm of soil reaches 18 °C — the minimum on the zucchini card — only around 7 June, 55 days later.

Last spring frost	13 April
Top 7 cm of soil at 18 °C	7 June, 55 days after the last frost
First autumn frost	19 November, 165 days after the start
Days in the bed to the first harvest (card)	36
First harvest, if planted in this window	13 July – 8 October
Days left for picking	129
Daylight	16:09 on 17 May, 17:04 on 7 June
Watering outdoors when fruiting (card)	every 3 days; the driest month, September, has 10 rainy days

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

Zucchini in Gdynia: care after planting

Planted on 7 June: in the first weeks water every 4 days.

Pests and diseases of zucchini to watch for:

Weather in Gdynia during the zucchini season

About 422 mm of rain falls in the season; September is the driest month (51 mm) and July the wettest (111 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	21.1	12.8	64	13	17:13
July	21.7	14.4	111	15	16:45
August	22.4	14.7	73	13	14:58
September	18.6	11.8	51	10	12:47
October	13.1	7.5	68	13	10:36
November	7.1	3	55	11	8:31

ERA5 2016–2025, Open-Meteo

Zucchini in nearby cities

Around Gdynia, Toruń is 4 days earlier and Gdańsk 8 days later.

City	Distance	Date	Difference
Gdańsk	20 km	15 June – 2 September	8 days later
Kaliningrad	129 km	14 June – 28 August	7 days later
Olsztyn	151 km	9 June – 30 August	2 days later
Bydgoszcz	159 km	6 June – 26 August	1 day earlier
Toruń	168 km	3 June – 26 August	4 days earlier
Poznań	257 km	6 June – 30 August	1 day earlier

Where to buy zucchini plants and seeds near Gdynia

Buy plants ready to set out from 7 June to 2 September (from 17 May to 2 September for an unheated greenhouse); seed for raising your own is sown from 26 April to 12 August. Within 15 km of Gdynia OpenStreetMap lists 9 garden centres, 1 farm-supply shop, 10 markets and 1 farm shop (collected 28 October 2026).

Targowisko Miejskie nr 8 — market
4 km
Targowisko Leszczynki — market
4 km
Rynek Rumski — market
11 km
Targowisko w Oliwie — market
13 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