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When to plant crocuses in Winnipeg: 12 September – 26 October

In Winnipeg, crocus: plant from 12 September to about 26 October. For planting stock, the places nearby include Ron Paul Garden Centre (garden centre, 13 km) and Lacoste Garden Centre (garden centre, 13 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 Winnipeg: soil, season and weather

Nights then average below 0 °C in November–April; the coldest, February, averages -18 °C.

Planting12 September – 26 October
First autumn frost12 October
Coldest nightsFebruary, -18 °C
Soil back at 1 °C in spring11 April
Daylight12:51 on 12 September
Daylight at the winter solstice8:05

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

Crocus in Winnipeg: 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 Winnipeg the average daily temperature stays at 10 °C or lower for about 30 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 Winnipeg, Regina is 6 days earlier and Duluth 16 days later.

CityDistanceDateDifference
Fargo337 km16 September – 4 November4 days later
Bismarck436 km15 September – 4 November3 days later
Duluth508 km28 September – 10 November16 days later
Regina536 km6 September – 22 October6 days earlier
Thunder Bay598 km23 September – 30 October11 days later
Minneapolis619 km24 September – 10 November12 days later

Where to buy crocus for planting in Winnipeg

Planting stock goes into the ground from 12 September to about 26 October; buy it before that. Within 15 km of Winnipeg OpenStreetMap lists 5 garden centres and 4 markets (collected 7 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant crocuses in Winnipeg?

In Winnipeg, crocus: plant from 12 September to about 26 October. 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 Winnipeg?

Last spring frost around 12 May, first autumn frost around 12 October.

Other crops in Winnipeg, with their dates