Utah planting calendar

When to put transplants or seed in the ground in covered areas of Utah, worked out from the average last spring and first fall frost for each USDA zone in the state, and what to line up before you commit ground. This page covers only the listed Zone 6–9 areas, not the whole state. Elevation changes frost dates fast here, so check your own last-frost date against the zone average. Written for farms that sell what they grow.

Your zone in Utah: frost dates

Zones 6b–9a run through Utah. Frost dates are long-term averages for planning, not a forecast for your field.

  • Zone 6b
    Logan and Cache Valley
    Last frost
    ~April 24
    First frost
    ~October 8
    Frost-free days
    167
    Winter low
    -5°F to 0°F
  • Zone 7a
    Salt Lake City and the Wasatch Front
    Last frost
    ~April 15
    First frost
    ~October 15
    Frost-free days
    183
    Winter low
    0°F to 5°F
  • Zone 8a
    Moab and the canyon country
    Last frost
    ~March 28
    First frost
    ~November 5
    Frost-free days
    222
    Winter low
    10°F to 15°F
  • Zone 9a
    St. George and the Virgin River valley
    Last frost
    ~February 25
    First frost
    ~December 1
    Frost-free days
    279
    Winter low
    20°F to 25°F

What it costs to grow an acre in Utah

No published Utah budget is transcribed here yet, so this page shows planting dates only — we do not publish cost figures we cannot source. Neighboring state budgets from NC State, UGA and UF/IFAS are on the crop profitability page.

Every figure is transcribed from a published land-grant enterprise budget for that state. These are planning budgets built from grower panels and dealer quotes, not surveys of what farms actually spent — your invoices override them everywhere they exist.

When to plant Utah's main crops

Calculated for Zone 7a (Salt Lake City and the Wasatch Front). Pick your own zone on the crop page.

  • Tomatoes
    April 22 – May 13
    July 13 – August 10
  • Peppers
    April 29 – May 20
    July 15 – August 12
  • Sweet corn
    April 15 – May 6
    July 6 – August 3
  • Cucumbers
    April 22 – May 13
    June 23 – July 21
  • Summer squash
    April 22 – May 13
    June 18 – July 16
  • Green beans (bush)
    April 15 – May 6
    June 16 – July 14
  • Cabbage
    March 18 – April 8
    June 8 – July 6
  • Broccoli
    March 18 – April 8
    May 29 – June 26
  • Kale
    March 11 – April 1
    May 12 – June 9
  • Carrots
    March 18 – April 8
    June 3 – July 1
  • Lettuce
    March 11 – April 1
    May 2 – May 30
  • Strawberries
    September 23 – October 14
    March 29 – April 26

What zone is my farm?

  • LoganZone 6b
  • Salt Lake CityZone 7a
  • MoabZone 8a
  • St. GeorgeZone 9a

If your farm sits in a zone that is not listed here, start from the calendar index and pick the closest match, then confirm with your county extension office.

Before you commit ground

A planting date tells you when a crop can grow — not whether it pays. Work out your breakeven price, then line up who is buying before you plant.

Utah planting and cost questions

What USDA planting zone is Logan, Utah?
The calendar carries Logan in Zone 6b. Average last spring frost is around April 24 and average first fall frost around October 8, which is about 167 frost-free days.
What USDA planting zone is Salt Lake City, Utah?
The calendar carries Salt Lake City in Zone 7a. Average last spring frost is around April 15 and average first fall frost around October 15, which is about 183 frost-free days.
When should I plant tomatoes in Utah?
In Zone 7a (Salt Lake City and the Wasatch Front), April 22 – May 13 july 13 – august 10

Other state pages

Dates are calculated from average first and last frost dates for each zone. Your microclimate, elevation and soil temperature can shift any window by a week or more — treat these as starting points and keep your own records.