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When to plant garlic in Grand Junction: 27 September – 7 December

In Grand Junction, garlic: plant from 27 September to about 7 December. For planting stock, the places nearby include Mesa Mycology Center (garden centre, 4 km) and Upland Gravel LLC (garden centre, 5 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 Grand Junction: soil, season and weather

Garlic goes into the ground in Grand Junction from 27 September to about 7 December; the window opens a month before the first autumn frost. Nights then average below 0 °C in December–February; the coldest, January, averages -6.3 °C.

Planting27 September – 7 December
First autumn frost27 October
Coldest nightsJanuary, -6.3 °C
Soil back at 5 °C in spring11 March
Harvest (card)about 8 months after planting: June
Daylight11:59 on 27 September
Daylight at the winter solstice9:25

The same dates in Grand Junction hold for Tulip, Daffodil, Crocus and Hyacinth.

Garlic in Grand Junction: care after planting

Planted on 27 September: in the first weeks water every 7 days.

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

  • 27 September — feed: nitrogen
  • 25 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 Grand Junction, Cheyenne is 14 days earlier and Pueblo 1 day later.

CityDistanceDateDifference
Denver316 km15 September – 14 December12 days earlier
Colorado Springs326 km15 September – 16 December12 days earlier
Salt Lake City339 km26 September – 23 December1 day earlier
Fort Collins340 km21 September – 5 December6 days earlier
Pueblo356 km28 September – end of December1 day later
Cheyenne392 km13 September – 4 December14 days earlier

Where to buy garlic for planting in Grand Junction

Planting stock goes into the ground from 27 September to about 7 December; buy it before that. Within 15 km of Grand Junction OpenStreetMap lists 5 garden centres, 1 farm-supply shop, 1 market and 1 farm shop (collected 28 October 2026).

  • Upland Gravel LLC — garden centre
    28 1/2 Road 454, 81501 Grand Junction · Mon closed; Tue–Fri 07:00–17:00; Sat 09:00–15:00; Sun closed · 5 km · uplandgravel.com
  • Meadowlark Garden — garden centre
    Broadway 2259, 81507 Grand Junction · Tue–Sun 08:30–17:30 · 6 km · meadowlarkgardencenter.com
  • Mount Garfield Greenhouse & Nursery — garden centre
    F Road 3162, 81504 Grand Junction · Mar, Jul–Oct Mon–Sat 09:00–17:30; Mar, Jul–Oct Sun 10:00–16:00; Apr–May Mon–Sat 08:00–18:00; Apr–May Sun 10:00–17:00; Jun Mon–Sat 09:00–18:00; Jun Sun 10:00–16:00; Jul 04 closed · 9 km · mtgarfieldgreenhouse.com
  • Mesa Mycology Center — garden centre
    North Avenue 2863, 81501 Grand Junction · Mon–Fri 10:00–18:00; Sat 12:00–16:00; Sun closed · 4 km

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant garlic in Grand Junction?

In Grand Junction, garlic: plant from 27 September to about 7 December. 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 Grand Junction?

Last spring frost around 18 April, first autumn frost around 27 October.

Other crops in Grand Junction, with their dates