CannaGLAP
Grow cannabis in Westland, MI
Growing cannabis in Westland: what a garage tent faces from December to March
A garage looks like the obvious place for a tent in western Wayne County: out of the living space, near an outlet, easy to vent. Then January arrives. At Detroit Metro Airport, the station 7.3 miles away at 631 feet, January lows average about 19°F, and the year brings about 120 freezing days.
Average lows stay below freezing from December through March. What do four months of that do to a tent with only a garage wall between it and the driveway?
Adults 21 and over: yes. Plant limit: 12 per residence in total.
Not visible from a public place; enclosed area with locks or other security devices. Source: MCL 333.27955; conditions: MCL 333.27954. Local rules (landlords, HOAs, city codes) can add more; this is a summary, not legal advice.
Westland indoors: winterize the space, not just the tent
An unheated garage follows the outdoors far more closely than the house does. With January and February lows near 19 and 21°F, a tent out there can fall well below what roots tolerate once the lamp shuts off. Insulate the walls and the door, set the tent on foam board instead of bare concrete, and add a heater on a thermostat. If that is more than the garage can give, a basement or an inside room is the better winter home.
Timing helps. Run the light period through the night, so the lamp's heat is there in the coldest hours, and let the dark period fall in the afternoon. Keep seedlings and clones on a heat mat from November through March, when freezing nights number about 14 to 27 a month.
Summer is when the garage pays off, mostly. July highs average about 84°F with about 5 days at 90, so a tent there needs a good exhaust fan more than air conditioning. Humidity holds near 72 percent from July through September, though, and with September nights falling to about 56°F, a flowering tent needs a dehumidifier and a fan below the canopy to keep moisture out of the buds.
Heater safety: use one with tip-over and overheat shutoff, plug it straight into a wall outlet (not an extension cord or power strip), and keep it a few feet from tent fabric and plants.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 32 | 35 | 46 | 59 | 70 | 80 | 84 | 81 | 74 | 62 | 49 | 37 |
| Avg low °F | 19 | 21 | 29 | 39 | 50 | 60 | 64 | 63 | 56 | 44 | 34 | 25 |
| Humidity % | 81 | 66 | 72 | 72 | 72 | 67 |
Highs and lows: NOAA 1991 to 2020 normals, Detroit Metro Airport station (7.3 miles away). Humidity: Open-Meteo historical model data, average daily humidity in 2024, for the months shown. Planning averages, not a forecast.
Westland outdoors: a short window and a locked space
Michigan allows 12 plants per residence in total, kept out of view from any public place, in an enclosed area secured with locks or other security devices. Before you pick a corner of the yard, stand on the sidewalk and look back at it.
Start seeds from March 27 to April 10 and move plants out on May 8. Average nights reach 45°F only on May 1 and 50°F on May 15, so keep frost cloth handy for a cold snap after planting. You then have about 159 days before an early frost on October 14 (October 27 in a typical year), and nights stop averaging 50°F after September 30. Choose strains that finish by early October, and with September at 72 percent humidity, mold resistance matters as much as speed.
| Last spring frost | Apr 20 in a typical year, May 8 to be safe (later only 1 year in 10) |
|---|---|
| First fall frost | Oct 27 typical, as early as Oct 14 (1 year in 10) |
| Frost-free season | about 188 days |
| Nights stay 50°F or warmer | May 15 to Sep 30 |
| Start seeds or clones indoors | Mar 27 to Apr 10 |
| Move plants outdoors | May 8 or later |
The fan noise is public, the numbers are not
When a garage door faces the street, a neighbor in Westland, or a friend over from nearby Garden City or Livonia, may notice the hum of an exhaust fan or a glow under the door. That much is hard to hide. How your plants fared through a January in the garage is a different kind of information, and it is yours to keep.
Canna GLAP encrypts your grow history on your phone before it syncs. If our servers were ever breached, the Westland grow records inside would be unreadable, and the key to read them would not be there.
What is encrypted: your plants, notes, photos, feed logs and harvests. What is not: account details (such as your email, name and plan), a grow name or town if you type one, your team, and your sensors' names. The full list: what a hacker would get.
Questions growers in Westland ask
Can I keep a grow tent in an unheated garage in Westland?
Only with work. January lows average about 19°F, so the garage needs insulation, a thermostat-controlled heater and a lamp that runs overnight. Otherwise move the tent indoors from December through March.
When should I plant cannabis outside in Westland?
May 8, after starting seeds indoors from March 27 to April 10. Expect about 159 days before an early frost on October 14.
Do I need a dehumidifier for flowering in Westland?
Plan on one. Humidity averages about 72 percent from July through September, and September nights fall to about 56°F, which lets moisture settle into dense buds.
Growing near Westland
- Grow cannabis in Livonia, MI 4 miles
- Grow cannabis in Canton, MI 4 miles
- Grow cannabis in Dearborn Heights, MI 7 miles
- Grow cannabis in Romulus, MI 7 miles
- Grow cannabis in Taylor, MI 9 miles
All Michigan cities · Every state where adults may grow at home