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

In Trieste, hyacinth: plant from 29 October to the end of December. For planting stock, the places nearby include Agro S.n.c. (garden centre, 1 km) and Agricola di Trieste / Tržaška kmetijska zadruga (garden centre, 6 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.

Hyacinth 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 Crocus.

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

Plant hyacinths 10 cm deep, at least 7.5 cm apart (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 12–15 weeks at about 2–10 °C. The winter here gives that in the ground, so the bulbs need no pre-chilling.

Flowers get smaller in the years after planting: for full spikes, replace the bulbs or add a few new ones each autumn (RHS).

If squirrels are a problem, protect the bulbs with wire mesh (RHS). Hyacinths are toxic to dogs, cats and horses: intense vomiting and diarrhoea (ASPCA).

Sources: RHS, Wisconsin Horticulture Extension, ASPCA.

Hyacinth 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 hyacinth 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).

Agricola di Trieste / Tržaška kmetijska zadruga — garden centre
Mon 08:00–12:30, Tue–Fri 08:00–18:30, Sat 08:00–12:30, 15:30–18:30; public holidays closed · 6 km · agricolats.it
Vivai e piante Helianthus — garden centre
Mon–Sat 08:30–18:30; Sun 09:00–13:00; public holidays closed · 9 km · vivaihelianthus.it
Agro S.n.c. — garden centre
Via San Giacomo in Monte 15, 34137 Trieste · 1 km
Agraria Zorn — garden centre
Prosecco / Prosek 160, 34151 Trieste · 7 km
Serre Fiorite — garden centre
Aurisina Stazione / Nabrežina Postaja 10m, 34011 Duino Aurisina / Devin - Nabrežina · 13 km
Mercato ortofrutticolo coperto — market
Via Ottaviano Augusto 12, 34123 · Tue–Sat 09:00–10:00 · 2 km · comune.trieste.it
Tržnica / Mercato — market
Pristaniška ulica / Via del Porto 2, 6000 Koper / Capodistria · Mon–Fri 07:00–20:00, Sat 07:00–13:00, Sun 08:00–12:00 · 12 km
Farmer's Market — market
Tue 07:45–14:00 · 1 km · campagnamica.it

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