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When to plant crocuses in Duisburg: 23 October – end of December

In Duisburg, crocus: plant from 23 October to the end of December. For planting stock, the places nearby include Schwafheimer Hofladen (farm shop, 8 km) and Apfelparadies Wittlaer (farm shop, 9 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 Duisburg: soil, season and weather

No month averages below 0 °C at night; the coldest nights, in January, average 1.3 °C.

Planting23 October – end of December
First autumn frost22 November
Coldest nightsJanuary, 1.3 °C
Soil back at 1 °C in springalready in the first week of January
Daylight10:15 on 23 October
Daylight at the winter solstice7:50

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

Crocus in Duisburg: 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 Duisburg the average daily temperature stays at 10 °C or lower for about 24 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

All the nearest cities on our list plant crocus earlier than Duisburg; the closest date is in Düsseldorf, 1 day earlier.

CityDistanceDateDifference
Düsseldorf22 km22 October – end of December1 day earlier
Dortmund50 km17 October – end of December6 days earlier
Cologne56 km21 October – end of December2 days earlier
Hasselt114 km19 October – end of December4 days earlier
Liège122 km20 October – end of December3 days earlier
Bielefeld138 km19 October – end of December4 days earlier

Where to buy crocus for planting in Duisburg

Planting stock goes into the ground from 23 October to the end of December; buy it before that. Within 15 km of Duisburg OpenStreetMap lists 44 garden centres, 3 farm-supply shops, 5 plant nurseries, 35 markets and 27 farm shops (collected 28 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant crocuses in Duisburg?

In Duisburg, crocus: plant from 23 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 Duisburg?

Last spring frost around 5 April, first autumn frost around 22 November.

Other crops in Duisburg, with their dates