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When to plant crocuses in Bydgoszcz: 13 October – end of December

In Bydgoszcz, crocus: plant from 13 October to the end of December. For planting stock, the places nearby include Kwiaciarnia i Ogrodnictwo Zalewscy (garden centre, 5 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 Bydgoszcz: soil, season and weather

Nights then average below 0 °C in December–February; the coldest, January, averages -1.9 °C.

Planting13 October – end of December
First autumn frost12 November
Coldest nightsJanuary, -1.9 °C
Soil back at 1 °C in springalready in the first week of January
Daylight10:49 on 13 October
Daylight at the winter solstice7:32

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

Crocus in Bydgoszcz: 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 Bydgoszcz 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

Around Bydgoszcz, Łódź is 8 days earlier and Gdańsk 7 days later.

CityDistanceDateDifference
Poznań107 km17 October – end of December4 days later
Gdańsk143 km20 October – end of December7 days later
Olsztyn179 km17 October – 16 December4 days later
Łódź180 km5 October – 22 December8 days earlier
Zielona Góra214 km14 October – end of December1 day later
Warsaw225 km18 October – 27 December5 days later

Where to buy crocus for planting in Bydgoszcz

Planting stock goes into the ground from 13 October to the end of December; buy it before that. Within 15 km of Bydgoszcz OpenStreetMap lists 7 garden centres, 1 farm-supply shop, 2 plant nurseries and 9 markets (collected 28 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant crocuses in Bydgoszcz?

In Bydgoszcz, crocus: plant from 13 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 Bydgoszcz?

Last spring frost around 20 April, first autumn frost around 12 November.

Other crops in Bydgoszcz, with their dates