What to plant in October in Utah
In Utah (UT), the average first fall frost (October 5) has passed by mid-October. The state averages 153 frost-free days a year (last frost May 5, first frost October 5; USDA zones 4a, 5a, 5b, 6b, 7b, 8a, 9a).
2 crops have a sowing or planting window this month: shallot, garlic.
Dates here come from Utah frost dates (last frost May 5, first frost Oct 5). For one crop in detail, see when to plant garlic, tomato or lettuce in Utah.
Utah covers a very wide range of climates, so dates near you can be two weeks or more either side of these. Enter your ZIP code in the planting calendar for dates tuned to your town.
Utah: planting activity through the year
For fall and winter harvests (2)
Sowings counted back from Utah's first fall frost, so the crop matures before the cold - or, for garlic and similar, planted after it.
Harvesting in October
First harvests expected this month from crops sown or planted on time earlier in the season.
Planting dates for popular crops in Utah
Every crop has its own full-year dates for Utah: indoor start, transplant or direct sowing, and harvest.
Spring bulbs to plant in October in Utah
Tulips, daffodils, hyacinths and crocus are planted in fall, once the soil has cooled and before it freezes. The exact window depends on the state, so our bulb guide quotes what each extension service says.
After the first frost: October garden jobs in Utah
- The average first frost (October 5) has passed - pull frost-killed tender plants and compost the healthy ones; bin or burn anything that had blight or mildew.
- Plant garlic now (Oct 16 – Nov 2): single cloves, pointy end up, 2 inches deep and 6 inches apart, then mulch.
- Leave cold-hardy roots (carrots, parsnips, leeks) in the ground under a thick mulch and dig them as needed.
- Clean and oil tools, drain hoses, and note what worked this year while you still remember - it makes next year's plan far easier.
USDA zone chart for Utah
Utah spans USDA zones 4a, 5a, 5b, 6b, 7b, 8a, 9a. Colder zones, usually higher or further inland, have a later last spring frost and an earlier first fall frost than the state average.
Questions gardeners ask
What vegetables can I plant in Utah in October?
2 crops have a window in October: shallot, garlic. The tables above give the exact dates for each.
Is it too late to plant garlic in Utah in October?
No - plant in fall (after first frost) runs Oct 16 – Nov 2 in Utah.
Is it too late to plant tomatoes in Utah in October?
For this year, yes - the tomato windows in Utah have closed. The next step is to start seeds indoors from about March 10.
When is the first frost in Utah?
The statewide average first fall frost is around October 5 and the last spring frost around May 5. Utah covers a wide range of climates, so local dates can differ by two weeks or more - look yours up by ZIP code.
What can I harvest in Utah in October?
From plantings made on time: luffa (loofah gourd), peanut, broccoli, cauliflower, cabbage, lettuce, brussels sprouts, bok choy / pak choi, mizuna, swiss chard.
What to plant in October in other states
Dates are computed from Utah’s statewide average frost dates (from NOAA/NCEI climate normals) and each crop’s timing in our crop database. Your garden may be a week or two either side - for dates tuned to your ZIP code, use the planting calendar.