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When to plant garlic in Trois-Rivières: 29 September – 8 November

In Trois-Rivières, garlic: plant from 29 September to about 8 November. For planting stock, the places nearby include Ferme horticole Gagnon (farm shop, 8 km) and RDR Grains et Semences (farm supply, 9 km); addresses and opening hours are below.

Garlic is best planted early in the window: cloves planted late make smaller bulbs. Late planting works only while the soil is not frozen. 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: UVM Extension, UNH Extension, RHS, how the ground freezes (NRC Canada, CBD-26).

Garlic in Trois-Rivières: soil, season and weather

Garlic goes into the ground in Trois-Rivières from 29 September to about 8 November; the window opens a month before the first autumn frost. Nights then average below 0 °C in November–March; the coldest, January, averages -13.7 °C.

Planting29 September – 8 November
First autumn frost29 October
Coldest nightsJanuary, -13.7 °C
Soil back at 5 °C in spring16 April
Harvest (card)about 8 months after planting: June
Daylight11:51 on 29 September
Daylight at the winter solstice8:36

The same dates in Trois-Rivières hold for Tulip, Daffodil, Crocus and Hyacinth.

Garlic in Trois-Rivières: care after planting

Planted on 29 September: in the first weeks water every 7 days.

Feeding, by the card’s schedule from that day:

  • 29 September — feed: nitrogen
  • 27 October — feed: nitrogen

Pests and diseases of garlic to watch for:

Dates count from the first planting day of the window above; a later planting moves them by as many days.

Garlic in nearby cities

Around Trois-Rivières, Montpelier is 12 days earlier and Burlington 5 days later.

CityDistanceDateDifference
Quebec City114 km28 September – 4 November1 day earlier
Sherbrooke116 km27 September – 8 November2 days earlier
Montreal123 km2 October – 13 November3 days later
Burlington213 km4 October – 23 November5 days later
Montpelier231 km17 September – 11 November12 days earlier
Saguenay257 km22 September – 30 October7 days earlier

Where to buy garlic for planting in Trois-Rivières

Planting stock goes into the ground from 29 September to about 8 November; buy it before that. Within 15 km of Trois-Rivières OpenStreetMap lists 1 garden centre, 2 farm-supply shops, 1 market and 2 farm shops (collected 20 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant garlic in Trois-Rivières?

In Trois-Rivières, garlic: plant from 29 September to about 8 November. Garlic is best planted early in the window: cloves planted late make smaller bulbs. Late planting works only while the soil is not frozen. Mulch after planting.

When is the last spring frost in Trois-Rivières?

Last spring frost around 29 April, first autumn frost around 29 October.

Other crops in Trois-Rivières, with their dates