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When to plant crocuses in Białystok: 2 October – 6 December

In Białystok, crocus: plant from 2 October to about 6 December. For planting stock, the places nearby include Green Serwis (garden centre, 3 km) and U Basi (garden centre, 4 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 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 Białystok: soil, season and weather

Nights then average below 0 °C in December–March; the coldest, January, averages -4.3 °C.

Planting2 October – 6 December
First autumn frost1 November
Coldest nightsJanuary, -4.3 °C
Soil back at 1 °C in spring19 January
Daylight11:34 on 2 October
Daylight at the winter solstice7:32

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

Crocus in Białystok: 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 Białystok the average daily temperature stays at 10 °C or lower for about 28 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 Białystok, Baranovichi is 5 days earlier and Warsaw 16 days later.

CityDistanceDateDifference
Grodno76 km9 October – 3 December7 days later
Brest120 km14 October – 12 December12 days later
Lida164 km30 September – 27 November2 days earlier
Warsaw176 km18 October – 27 December16 days later
Baranovichi190 km27 September – 25 November5 days earlier
Olsztyn192 km17 October – 16 December15 days later

Where to buy crocus for planting in Białystok

Planting stock goes into the ground from 2 October to about 6 December; buy it before that. Within 15 km of Białystok OpenStreetMap lists 8 garden centres, 1 plant nursery and 8 markets (collected 28 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant crocuses in Białystok?

In Białystok, crocus: plant from 2 October to about 6 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 Białystok?

Last spring frost around 28 April, first autumn frost around 1 November.

Other crops in Białystok, with their dates