When to plant zucchini in Trieste: 5 June – 11 September

In Trieste, zucchini: sow for seedlings from 24 April to 21 August; plant into a greenhouse from 15 May to 11 September; plant out into open ground from 5 June to 11 September. For plants and seeds, the places nearby include Kmetija Kaprolovi (farm shop, 15 km); addresses and opening hours are below.

Zucchini in Trieste: soil, season and weather

In Trieste the soil, not frost, sets the date: the last frost is over around 19 March, but the top 7 cm of soil reaches 18 °C — the minimum on the zucchini card — only around 5 June, 78 days later.

Last spring frost	19 March
Top 7 cm of soil at 18 °C	5 June, 78 days after the last frost
First autumn frost	28 November, 176 days after the start
Days in the bed to the first harvest (card)	36
First harvest, if planted in this window	11 July – 17 October
Days left for picking	140
Daylight	14:54 on 15 May, 15:32 on 5 June
Watering outdoors when fruiting (card)	every 3 days; the driest month, June, has 9 rainy days

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

Zucchini in Trieste: care after planting

Planted on 5 June: in the first weeks water every 4 days.

Pests and diseases of zucchini to watch for:

Weather in Trieste during the zucchini season

About 843 mm of rain falls in the season; June is the driest month (90 mm) and September the wettest (189 mm).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	24.3	16	90	9	15:41
July	26.5	17.8	105	9	15:22
August	26.9	18.1	95	7	14:10
September	21.7	14.1	189	11	12:35
October	16.9	10	175	12	11:00
November	11.2	5.6	189	14	9:31

ERA5 2016–2025, Open-Meteo

Zucchini in nearby cities

Around Trieste, Padua is 21 days earlier and Klagenfurt 28 days later.

City	Distance	Date	Difference
Udine	63 km	23 May – 5 September	13 days earlier
Venice	115 km	16 May – 19 September	20 days earlier
Klagenfurt	115 km	3 July – 8 July	28 days later
Treviso	120 km	19 May – 6 September	17 days earlier
Padua	150 km	15 May – 11 September	21 days earlier
Zagreb	172 km	28 May – 5 September	8 days earlier

Where to buy zucchini plants and seeds near Trieste

Buy plants ready to set out from 5 June to 11 September (from 15 May to 11 September for an unheated greenhouse); seed for raising your own is sown from 24 April to 21 August. Within 15 km of Trieste OpenStreetMap lists 19 garden centres, 2 farm-supply shops, 1 plant nursery, 9 markets and 3 farm shops (collected 20 October 2026).

Mercato Comunale Coperto — market
Mon 08:00–14:00, Tue–Sat 08:00–17:00; public holidays closed · 0 km
Tržnica Sežana — market
Mon–Sat 07:00–12:00 · 9 km
Piazza Sant'Antonio — market
Tue–Sat 07:30–14:00 · 1 km
Kmetija Kaprolovi — farm shop
Štorje 18, 6210 Sežana · 15 km · sadjekras.com

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