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When to plant crocuses in Burlington: 4 October – 23 November

In Burlington, crocus: plant from 4 October to about 23 November. For planting stock, the places nearby include Green State Gardener (garden centre, 1 km) and Gardener's Supply Company (garden centre, 1 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 Burlington: soil, season and weather

Nights then average below 0 °C in December–March; the coldest, January, averages -8.4 °C.

Planting4 October – 23 November
First autumn frost3 November
Coldest nightsJanuary, -8.4 °C
Soil back at 1 °C in spring7 March
Daylight11:36 on 4 October
Daylight at the winter solstice8:50

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

Crocus in Burlington: 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 Burlington 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 Burlington, Montpelier is 17 days earlier and Albany 3 days later.

CityDistanceDateDifference
Montpelier57 km17 September – 11 November17 days earlier
Montreal117 km2 October – 13 November2 days earlier
Sherbrooke146 km27 September – 8 November7 days earlier
Concord195 km1 October – 25 November3 days earlier
Albany208 km7 October – 30 November3 days later
Trois-Rivières213 km29 September – 8 November5 days earlier

Where to buy crocus for planting in Burlington

Planting stock goes into the ground from 4 October to about 23 November; buy it before that. Within 15 km of Burlington OpenStreetMap lists 5 garden centres, 3 markets and 5 farm shops (collected 20 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant crocuses in Burlington?

In Burlington, crocus: plant from 4 October to about 23 November. 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 Burlington?

Last spring frost around 22 April, first autumn frost around 3 November.

Other crops in Burlington, with their dates