When to plant crocuses in Trieste: 29 October – end of December

In Trieste, crocus: plant from 29 October to the end of December. For planting stock, the places nearby include Biogeste Vivai & Giardini (garden centre, 2 km) and AgroSosič (garden centre, 4 km); addresses and opening hours are below.

Bulbs are best planted early in the window: late-planted bulbs may flower later or less well. Late planting works only while the soil can be dug. Mulch after planting.

The average daily temperature here stays above 0 °C all winter, and at least three months average 7 °C or less: our rule of thumb for the winter cold spring bulbs need. Sources: Iowa State University Extension, Wisconsin Horticulture Extension, UNH Extension, RHS.

Crocus in Trieste: soil, season and weather

No month averages below 0 °C at night; the coldest nights, in January, average 0.1 °C.

Planting	29 October – end of December
First autumn frost	28 November
Coldest nights	January, 0.1 °C
Soil back at 1 °C in spring	already in the first week of January
Daylight	10:18 on 29 October
Daylight at the winter solstice	8:41

The same dates in Trieste hold for Garlic, Tulip, Daffodil and Hyacinth.

Crocus in Trieste: depth, winter cold, pests and pets

Plant Dutch crocuses (Crocus vernus) about 12 cm deep and 9 cm apart; smaller species go 7–10 cm deep (RHS).

In Trieste the average daily temperature stays at 10 °C or lower for about 22 weeks a year (our estimate from ten years of monthly weather). For this bulb Wisconsin Horticulture Extension gives a cold period of 15–17 weeks at about 2–10 °C. The winter here gives that in the ground, so the bulbs need no pre-chilling.

Crocuses multiply on their own (they naturalise); in a lawn, hold off mowing until their leaves die back (RHS).

Birds, squirrels and rodents damage crocuses; planting under metal mesh may reduce losses (RHS). Spring crocus gives dogs and cats vomiting and diarrhoea; do not confuse it with autumn crocus (Colchicum), which is very toxic (Pet Poison Helpline).

Sources: RHS, Wisconsin Horticulture Extension, Pet Poison Helpline.

Crocus in nearby cities

Around Trieste, Klagenfurt is 65 days earlier and Venice 8 days later.

City	Distance	Date	Difference
Udine	63 km	23 October – end of December	6 days earlier
Venice	115 km	6 November – end of December	8 days later
Klagenfurt	115 km	25 August – 30 October	65 days earlier
Treviso	120 km	24 October – end of December	5 days earlier
Padua	150 km	29 October – end of December	same day
Zagreb	172 km	23 October – end of December	6 days earlier

Where to buy crocus for planting in Trieste

Planting stock goes into the ground from 29 October to the end of December; buy it before that. 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).

Farm Vidali — farm shop · sells: cheese
6 km
Bottega enogastronomica / Enogastronomska prodaja Bajta — farm shop
12 km · bajta.it
Floricoltura / Vrtnarija Orel — garden centre
Stazione di Prosecco / Proseška Postaja 32, 34010 Sgonico / Zgonik · Mon–Sat 08:00–12:30, 14:30–18:00; public holidays closed · 8 km · flor-orel.com
AgroSosič — garden centre
Via di Basovizza 2, 34151 Trieste · Tue–Sat 08:30–13:00, 15:00–18:00; Mar Sun[–1]–Oct Sun[–1]: Tue–Sat 08:30–13:00, 15:30–19:00; public holidays closed · 4 km · agrososic.eu
Ever Green — garden centre
Via Dragotin Kette / Kettejeva ulica 13a, 34149 Trieste · Mon 08:30–13:30, Tue–Sat 08:30–13:30, 15:30–19:00; public holidays closed · 7 km · agroevergreen.it
Biogeste Vivai & Giardini — garden centre
Via Brandesia 13, 34128 Trieste · Mon–Sat 08:30–19:00; public holidays closed · 2 km
Agropreskrba — garden centre
Partizanska cesta 70, 6210 Sežana · Mon–Sat 08:00–19:00 · 9 km
Agraria / Semenarna Stanissa — garden centre
Aurisina / Nabrežina 160, 34011 Duino Aurisina / Devin - Nabrežina · Mon 08:00–13:00; Tue–Sat 08:00–13:00, 15:00–19:00; public holidays closed · 14 km

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