Utah planting dates vary sharply by place: St George lists a March 30 average last spring frost, while Woodruff lists June 26.
Regional guide
Utah Frost-Group Vegetable Garden
A USU frost-group guide for Utah planting dates, city frost swings, protected-cover caveats, succession rows, and fall windows.
Regional timing
Current regional planting plan
A USU frost-group guide for Utah planting dates, city frost swings, protected-cover caveats, succession rows, and fall windows.
Source-backed timing
USU suggested vegetable planting dates for Utah
Utah Frost Groups
4 climate signals
Source
source cues
Local
conditions
- USU's peer-reviewed fact sheet, revised May 2025, groups Utah vegetables into four major categories, A-D, by cold tolerance for spring planting dates.
- Utah planting dates vary sharply by place: St George lists a March 30 average last spring frost, while Woodruff lists June 26.
- USU notes that frost can vary over a short distance because of elevation and topography, so gardeners should keep records for their own sites.
- Catalog priority
- 29 priority crops 29 catalog examples
- Climate checks
- 4 climate signals 6 planning notes
- Timing basis
- Use regional source signals source guidance first
Green Globe Artichoke, Provider Bush Bean, Detroit Dark Red Beet, Waltham 29 Broccoli
Use Group B semi-hardy crops about 2 weeks before average last spring frost; source examples include beets, lettuce, carrots, parsnips, Swiss chard, endive, and cauliflower.
Calendar
Convert regional timing into dated sowing, transplant, and harvest jobs.
Frost dates
Keep hardiness zone context separate from local first and last frost dates.
All regions
Compare this guide with the broader regional atlas.
Wasatch Front
USU Wasatch Front guide for city last-frost dates, hardy/tender planting groups, succession rows, and fall harvest windows.
Climate signals
- USU's peer-reviewed fact sheet, revised May 2025, groups Utah vegetables into four major categories, A-D, by cold tolerance for spring planting dates.
- Utah planting dates vary sharply by place: St George lists a March 30 average last spring frost, while Woodruff lists June 26.
- USU notes that frost can vary over a short distance because of elevation and topography, so gardeners should keep records for their own sites.
- Several Utah locations list Group D very tender crops with a protected with cover flag, so warm-crop timing needs local protection checks.
Planning notes
- Use Group A hardy crops as soon as the soil dries out in spring; source examples include peas, radish, spinach, turnip, broccoli, cabbage, Brussels sprouts, and artichoke.
- Use Group B semi-hardy crops about 2 weeks before average last spring frost; source examples include beets, lettuce, carrots, parsnips, Swiss chard, endive, and cauliflower.
- Use Group C tender crops on the average date of the last spring frost; source examples include cucumber, sweet corn, snap bean, summer squash, and celery.
- Use Group D very tender crops about 2 weeks after Group C when soil is warm; source examples include winter squash, eggplant, pepper, pumpkin, tomato, and watermelon.
- For broccoli, radish, carrot, sweet corn, and Swiss chard, plan several plantings where the season is long enough.
- Fall Group E examples include beets July 1 - August 1, spinach July 1 - August 15, and turnip July 1 - August 1.
Catalog crop examples
These catalog entries match crops covered by the regional timing source; variety-specific details remain tied to each seed entry's own source.
- Green Globe Artichoke Vegetable · Warm · 120 days
- Provider Bush Bean Vegetable · Warm · 50 days
- Detroit Dark Red Beet Vegetable · Cool · 58 days
- Waltham 29 Broccoli Vegetable · Cool · 74 days
- Long Island Improved Brussels Sprouts Vegetable · Cool · 100 days
- Golden Acre Cabbage Vegetable · Cool · 64 days
- Danvers 126 Carrot Vegetable · Shoulder · 70 days
- Snowball Y Cauliflower Vegetable · Cool · 70 days
- Tall Utah Celery Vegetable · Cool · 110 days
- Bright Lights Swiss Chard Vegetable · Shoulder · 55 days
- Golden Bantam Sweet Corn Vegetable · Warm · 80 days
- Marketmore 76 Cucumber Vegetable · Warm · 58 days
- Black Beauty Eggplant Vegetable · Warm · 80 days
- Green Curled Endive Vegetable · Cool · 85 days
- Lacinato Kale Vegetable · Cool · 60 days
- Early White Vienna Kohlrabi Vegetable · Cool · 55 days
- Black Seeded Simpson Lettuce Vegetable · Cool · 45 days
- Evergreen Bunching Onion Vegetable · Shoulder · 65 days
- Hollow Crown Parsnip Vegetable · Cool · 120 days
- Sugar Snap Pea Vegetable · Cool · 62 days
- California Wonder Pepper Vegetable · Warm · 72 days
- Small Sugar Pumpkin Vegetable · Warm · 100 days
- French Breakfast Radish Vegetable · Cool · 28 days
- American Purple Top Rutabaga Vegetable · Cool · 90 days
- Bloomsdale Spinach Vegetable · Cool · 42 days
- Waltham Butternut Squash Vegetable · Warm · 95 days
- Roma Tomato Vegetable · Warm · 76 days
- Purple Top White Globe Turnip Vegetable · Cool · 55 days
- Sugar Baby Watermelon Vegetable · Warm · 80 days
Related regional guides
- Wasatch Front Vegetable Planting Dates USU Wasatch Front guide for city last-frost dates, hardy/tender planting groups, succession rows, and fall harvest windows.
- Washington County Utah Two-Season Vegetable Garden USU Washington County guide for elevation-driven frost seasons, St. George heat pause, short-season sites, and fall count-back timing.
- Washington County Utah Fall Vegetable Calendar USU Washington County fall guide for August direct-seed windows, September transplants, elevation shifts, frost caveats, and storage onions.
- Utah Vegetable Variety Recommendations USU archived Utah guide for variety selection, maturity/frost-free caveats, disease-resistance framing, planting chart, and conservative matches.