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When to plant crocuses in Łódź: 5 October – 22 December

In Łódź, crocus: plant from 5 October to about 22 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 date is about two weeks before the average daily temperature here falls below 0 °C (ten years of weather): an estimate, not the day the ground freezes, and a cold spell can freeze it earlier. Sources: Iowa State University Extension, Wisconsin Horticulture Extension, UNH Extension, RHS, how the ground freezes (NRC Canada, CBD-26).

Crocus in Łódź: soil, season and weather

Nights then average below 0 °C in December–March; the coldest, January, averages -3.2 °C.

Planting5 October – 22 December
First autumn frost4 November
Coldest nightsJanuary, -3.2 °C
Soil back at 1 °C in spring9 January
Daylight11:24 on 5 October
Daylight at the winter solstice7:47

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

Crocus in Łódź: 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 Łódź the average daily temperature stays at 10 °C or lower for about 27 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 later than Łódź; the closest date is in Częstochowa, 6 days later.

CityDistanceDateDifference
Częstochowa108 km11 October – 19 December6 days later
Warsaw118 km18 October – 27 December13 days later
Radom123 km16 October – 24 December11 days later
Opole161 km19 October – end of December14 days later
Katowice170 km17 October – 22 December12 days later
Bydgoszcz180 km13 October – end of December8 days later

Where to buy crocus for planting in Łódź

Planting stock goes into the ground from 5 October to about 22 December; buy it before that. Within 15 km of Łódź OpenStreetMap lists 18 garden centres, 2 farm-supply shops, 8 plant nurseries and 27 markets (collected 28 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant crocuses in Łódź?

In Łódź, crocus: plant from 5 October to about 22 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 Łódź?

Last spring frost around 16 April, first autumn frost around 4 November.

Other crops in Łódź, with their dates