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

In Graz, tulip: plant from 11 October to the end of December.

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.

Tulip in Graz: soil, season and weather

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

Planting11 October – end of December
First autumn frost10 November
Coldest nightsJanuary, -3.8 °C
Soil back at 7 °C in spring28 March
Daylight11:10 on 11 October
Daylight at the winter solstice8:30

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

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

Plant tulips at a depth of two to three times the bulb’s height, at least twice the bulb’s width apart, pointed end up (RHS).

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 15–17 weeks at about 2–10 °C. The winter here gives that in the ground, so the bulbs need no pre-chilling.

Border tulips often fail to flower in their second year if left in the ground, so many gardeners grow them for one spring and plant fresh bulbs each autumn; Darwin hybrid and Kaufmanniana tulips reflower more reliably (RHS). Soils that stay wet in summer make reflowering difficult (RHS): in Graz the three warmest months bring about 301 mm of rain together.

Grey squirrels often dig up tulip bulbs: lay chicken wire over the bed until the leaves appear, or plant daffodils among them, which squirrels avoid (RHS). Tulips are toxic to dogs, cats and horses, the bulb most of all (ASPCA).

Sources: RHS, Wisconsin Horticulture Extension, ASPCA.

Tulip in nearby cities

Around Graz, Klagenfurt is 47 days earlier and Zagreb 12 days later.

CityDistanceDateDifference
Klagenfurt99 km25 August – 30 October47 days earlier
Vienna145 km13 October – 29 December2 days later
Zagreb146 km23 October – end of December12 days later
Linz163 km13 October – end of December2 days later
Bratislava173 km17 October – end of December6 days later
Salzburg198 km1 October – end of December10 days earlier

Where to buy tulip 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).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant tulips in Graz?

In Graz, tulip: plant from 11 October to the end of December. 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.

When is the last spring frost in Graz?

Last spring frost around 16 April, first autumn frost around 10 November.

Other crops in Graz, with their dates