When to plant hyacinths in Graz: 11 October – end of December

In Graz, hyacinth: plant from 11 October to the end of December. For planting stock, the places nearby include Gartenbau Friedl (garden centre, 3 km) and Städtische Gärtnerei (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 Graz: soil, season and weather

Nights then average below 0 °C in December–February; the coldest, January, averages -3.8 °C.

Planting	11 October – end of December
First autumn frost	10 November
Coldest nights	January, -3.8 °C
Soil back at 1 °C in spring	6 February
Daylight	11:10 on 11 October
Daylight at the winter solstice	8:30

The same dates in Graz hold for Garlic, Tulip, Daffodil and Crocus.

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

Plant hyacinths 10 cm deep, at least 7.5 cm apart (RHS). In the ground hyacinths are fully hardy, but in containers they can be frost tender in cold winters (RHS); here winter nights average below 0 °C, so wrap the pots or move them to a sheltered spot.

In Graz the average daily temperature stays at 10 °C or lower for about 25 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 Graz, Klagenfurt is 47 days earlier and Zagreb 12 days later.

City	Distance	Date	Difference
Klagenfurt	99 km	25 August – 30 October	47 days earlier
Vienna	145 km	13 October – 29 December	2 days later
Zagreb	146 km	23 October – end of December	12 days later
Linz	163 km	13 October – end of December	2 days later
Bratislava	173 km	17 October – end of December	6 days later
Salzburg	198 km	1 October – end of December	10 days earlier

Where to buy hyacinth for planting in Graz

Planting stock goes into the ground from 11 October to the end of December; buy it before that. Within 15 km of Graz OpenStreetMap lists 24 garden centres, 5 plant nurseries, 30 markets and 47 farm shops (collected 28 October 2026).

Teich & Garten — plant nursery
3 km
Rabatten - Geschützter Landschaftsteil — plant nursery
4 km
Blumen zum Selberschneiden — plant nursery
6 km
Christbaumplantage Greimel — plant nursery
8 km
Gartenbau Friedl — garden centre
Kalvarienbergstraße 81, 8020 Graz · Mon–Fri 07:30–18:30; Sat 08:00–17:00; Sun, public holidays 08:00–12:00 · 3 km · blumen-friedl.at
Städtische Gärtnerei — garden centre
Martinhofstraße 15, 8054 Graz · Mon–Fri 08:00–13:00 · 6 km · holding-graz.at
Painer Gartenparadies — garden centre
Badstraße 48, 8063 Eggersdorf bei Graz · Mon–Sat 09:00–12:00; Mon–Fri 14:00–17:00 · 12 km · painer.com
Micko Pflanzenparadies — garden centre
Rosengasse 21, 8501 · Mon–Fri 09:00–18:00; Sat 09:00–17:00 · 15 km · micko.at

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