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When to plant crocuses in Katowice: 17 October – 22 December

In Katowice, crocus: plant from 17 October to about 22 December. For planting stock, the places nearby include Centrum ogrodnicze „Silesia” (garden centre, 2 km) and CALLA.pl (garden centre, 2 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 Katowice: soil, season and weather

Nights then average below 0 °C in December–February; the coldest, January, averages -3.3 °C.

Planting17 October – 22 December
First autumn frost16 November
Coldest nightsJanuary, -3.3 °C
Soil back at 1 °C in spring10 January
Daylight10:41 on 17 October
Daylight at the winter solstice8:02

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

Crocus in Katowice: 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 Katowice 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 Katowice, Kraków is 15 days earlier and Opole 2 days later.

CityDistanceDateDifference
Częstochowa62 km11 October – 19 December6 days earlier
Kraków69 km2 October – 28 December15 days earlier
Ostrava73 km10 October – end of December7 days earlier
Opole90 km19 October – end of December2 days later
Wrocław168 km12 October – end of December5 days earlier
Łódź170 km5 October – 22 December12 days earlier

Where to buy crocus for planting in Katowice

Planting stock goes into the ground from 17 October to about 22 December; buy it before that. Within 15 km of Katowice OpenStreetMap lists 25 garden centres, 1 farm-supply shop, 7 plant nurseries, 33 markets and 3 farm shops (collected 28 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant crocuses in Katowice?

In Katowice, crocus: plant from 17 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 Katowice?

Last spring frost around 15 April, first autumn frost around 16 November.

Other crops in Katowice, with their dates