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Sanpete County, UT — Planting Guide

Sanpete County, Utah Zone 6a May

May to-do list for Sanpete County, Utah

Your Sanpete County, Utah garden is entering a new phase. Here's what's on the schedule for May and why each task matters now.

Avg. last frost May 21
Avg. first frost September 28
Soil temp (4") 38°F
Watering High
Pest pressure Low
Daylight 14.2 hrs
  1. Move kale, lettuce, and angelica into the garden

    Pinch off the lowest leaves on each seedling before you plant — it reduces water loss while the roots catch up.

  2. Plant basil, carrots, and cucumber from seed, right in the garden

    Sow every 2 weeks for a continuous harvest. A single big planting means a single big glut.

  3. Pick microgreens

    The more you pick, the more the plant produces. Letting fruit overripen tells the plant it's time to stop.

June prep starts now
  • Transplants going out: basil, cucumber, and peppers
  • Starting indoors: cucumber, kale, and lettuce
  • First harvests: lettuce, radish, and arugula

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Sanpete County is in USDA Zone 6a. The average last spring frost is May 21 and the first fall frost is September 28, giving you a growing season of approximately 130 days.

At an elevation of 6,969 ft, Sanpete County receives approximately 14.2 in of rainfall annually. Summer highs average 86°F with winter lows around 10°F. The predominant soil type is Loam.

Based on 31 years of NOAA climate station data, the last frost date here varies by 40 days year to year — ranging from May 1 in warm years to June 10 in cold years. The growing season is trending longer by about 2.52 days per decade. Sanpete County scores 29/100 (Challenging) on the Microclimate Index.

🌡️ Zone

6a (°F to °F min)

❄️ Last Frost

May 21

🍂 First Frost

September 28

📅 Growing Season

130 days

⛰️ Elevation

6,969 ft

🌧️ Annual Rainfall

14.2 in

Sanpete County, UT Short season
130 days
Last Spring Frost May 21
130 growing days
First Fall Frost September 28

Monthly Watering Calendar

When you'll need to water your garden — based on average monthly rainfall vs. the ~1 inch/week most gardens need.

1"/wk 0" 1.3" 2.5" 3.8" 5" Jan 1" Feb 0.9" Mar 1.1" +2.8" Apr 1.5" +2.6" May 1.7" +3.3" Jun 1" +2.9" Jul 1.4" +2.8" Aug 1.5" +3" Sep 1.3" +3.2" Oct 1.1" Nov 0.9" Dec 0.7"
Rainfall sufficient Supplemental water needed Heavy watering required - - - 1"/week garden need
View detailed monthly data
MonthAvg RainfallRainy DaysExtra Water NeededWatering Effort
Jan 1 in 6 days None
Feb 0.9 in 5 days None
Mar 1.1 in 7 days None
Apr 1.5 in 7 days 2.8 in High
May 1.7 in 7 days 2.6 in High
Jun 1 in 4 days 3.3 in Critical
Jul 1.4 in 5 days 2.9 in High
Aug 1.5 in 6 days 2.8 in High
Sep 1.3 in 6 days 3 in High
Oct 1.1 in 5 days 3.2 in Critical
Nov 0.9 in 6 days None
Dec 0.7 in 7 days None

Annual total: 14.1 in. Water needs vary by crop — tomatoes need ~1.2"/week while herbs like rosemary need only 0.3"/week. Check individual plant pages for crop-specific water budgets that factor in your county's rainfall and soil drainage.

Sanpete County Soil Profile

Soil Type

Loam

Soil pH

6.5-7.8

Drainage

Well Drained

Frost Risk Probability

Based on 31 years of NOAA weather station data from 3 stations

Too early frost risk Safe to Plant May 21 → Sep 28 130 frost-free days Protect crops frost returns Apr May Jun Jul Aug Sep Oct Nov Safe: Jun 10 Protect by: Oct 17

Beginners: Plant frost-sensitive crops (tomatoes, peppers, squash) after the "Safe" date on the left. Harvest or cover them before the "Protect by" date on the right. Hardy crops (lettuce, peas, kale) can go in the yellow transition zones.

How to read this table: "Conservative" means you're safe from frost 9 out of 10 years — best for beginners and frost-sensitive crops. "Average year" is the typical date. "Aggressive" means only 1 in 10 years is that warm — experienced gardeners with frost protection can try these dates.

Planting Strategy Last Spring Frost First Fall Frost Frost-Free Days
Conservative (safest) Jun 10 Oct 17 129 days
Cautious May 30 Oct 6 129 days
Average year May 21 Sep 28 130 days
Optimistic May 13 Sep 23 133 days
Aggressive (risky) May 1 Sep 14 136 days
📊
How predictable are frost dates here?

Not very — frost dates can vary by ±40 days year-to-year. Use the "Conservative" row in the table below, and keep row covers handy for surprise late frosts.

🌱
Is the growing season changing?

Yes — growing seasons are getting longer here (about 2.5 days per decade). Spring is arriving earlier than it used to. Good news for gardeners.

Gardening Difficulty Score

29 Challenging
Frost Timing Risk
10.0/10
Drought Risk
5.5/10
Soil Difficulty
1.0/10
Altitude Challenge
10.0/10
Climate Shift
10.0/10
Rainfall Challenge
6.3/10

Sanpete County has challenging growing conditions. Season extension and careful variety selection are essential.

Zone 6a Frost Countdown
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Loading...
Last Frost: May 21 First Frost: Sep 28

Local Gardening Help in Sanpete County

Free expert help is closer than you think. Your county's cooperative extension office connects you with trained gardeners, soil testing labs, and local programs — all specific to Sanpete County's climate and soil.

County Extension Office

Sanpete County Utah State University Extension Extension Office

Phone: 435-797-2200

Visit Extension Office Website →

Extension offices are run by land-grant universities and funded by the USDA. Their advice is free, research-based, and tailored to your county's specific conditions.

Master Gardener Program

Free gardening help from trained volunteers

Master Gardeners are community volunteers who complete 40–60 hours of university horticultural training. They answer gardening questions, diagnose plant problems, and offer workshops — all free.

Find Master Gardeners in UT →

Many extension offices run a Master Gardener hotline where you can call or email with photos of plant problems for free diagnosis.

Soil Testing

Available through your extension office

Before amending your soil, get it tested. Your extension office offers soil testing (typically $10–$25) that tells you exact pH, nutrient levels, and amendment recommendations specific to what you want to grow.

Request a Soil Test →

Services Available in Sanpete County

Soil testing Arid gardening Pest identification
Finding local nurseries & garden centers in Sanpete County

Why Buy Local

Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Sanpete County's soil and climate that big-box stores can't. Plants from local growers are typically hardier because they're already acclimated to your zone.

How to Find Them

Search for "nurseries near Sanpete County UT" or "garden center Sanpete County" on Google Maps. Also check with your extension office — they often maintain lists of reputable local nurseries and plant sales.

Community gardens & gardening groups

Community gardens are a great way to learn from experienced gardeners in your area, especially if you're limited on space. Search "community garden Sanpete County UT" or check your extension office and local parks department. Facebook groups like "Sanpete County Gardeners" or "Utah Gardening" are also excellent for local advice and plant swaps.

What to Plant After Your Harvest

After your first crops finish, use the remaining frost-free days to grow a second round.

After Spinach (harvest ends Aug 27) 32 days until frost
After Carrots (harvest ends Aug 27) 32 days until frost
After Cilantro (harvest ends Aug 27) 32 days until frost
After Patty Pan Squash (harvest ends Aug 20) 39 days until frost
Show 6 more succession options
After Chervil (harvest ends Aug 27) 32 days until frost
After Kohlrabi (harvest ends Aug 13) 46 days until frost
After Crookneck Squash (harvest ends Aug 20) 39 days until frost
After Dill (harvest ends Aug 27) 32 days until frost
After New Zealand Spinach (harvest ends Aug 27) 32 days until frost
After Scallions (harvest ends Aug 13) 46 days until frost

Sunlight & Day Length

Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.

Longest Day

14.8 hours

Summer solstice daylight

Shortest Day

9.2 hours

Winter solstice daylight

Peak Sun Hours

10.4 hr/day peak (summer)

Peak sun hours (green dashed line below) account for cloud cover — this is the usable direct sunlight your garden actually receives. Most vegetables need 6+ peak sun hours.

14hr 12hr 3h 6h 10h 13h 16h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daylight hours (sunrise to sunset) Peak sun hours (direct sunlight after cloud cover) ▪ Gold zone = long day (14+ hr) ▪ Blue zone = short day (<12 hr)

Onion tip: Your long summer days (14+ hours) support long-day onion varieties like Walla Walla, Sweet Spanish, and Ailsa Craig.

View detailed monthly data
MonthDaylight HoursPeak Sun HoursDay Length
January 9.5 hr 5.2 hr Short day
February 10.5 hr 5.9 hr Short day
March 11.7 hr 7.2 hr Short day
April 13 hr 7.3 hr Neutral
May 14.2 hr 8.4 hr Long day
June 14.8 hr 10.4 hr Long day
July 14.5 hr 10 hr Long day
August 13.5 hr 8.9 hr Neutral
September 12.2 hr 8.6 hr Neutral
October 10.9 hr 7 hr Short day
November 9.8 hr 5.6 hr Short day
December 9.2 hr 4.9 hr Short day

Peak sun hours factor in typical cloud cover — use these for solar panel and shade-planning calculations.

Soil Temperature & Composting Calendar

Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.

Plant Warm Crops When

Soil reaches 60°F+

Soil rarely reaches 60°F — use black plastic mulch to warm soil.

Best Month to Compost

Jul

Microbial activity peaks when soil is warm.

Active Composting

3 months

Short season — insulate pile or use indoor vermicomposting.

60°F 18° 35° 53° 70° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
4" depth 8" depth - - - 60°F (corn, beans) - - - 70°F (tomatoes, peppers)
View detailed monthly data
MonthSoil 4" DeepSoil 8" DeepCompost ActivityTime to Finish
Jan 2°F 10°F ❄️ Dormant ~36 weeks
Feb 4°F 8°F ❄️ Dormant ~36 weeks
Mar 10°F 13°F ❄️ Dormant ~36 weeks
Apr 24°F 23°F ❄️ Dormant ~36 weeks
May 38°F 34°F ❄️ Dormant ~36 weeks
Jun 48°F 42°F 🐢 Slow ~24 weeks
Jul 57°F 50°F ♻️ Active ~14 weeks
Aug 58°F 52°F ♻️ Active ~14 weeks
Sep 51°F 50°F ♻️ Active ~14 weeks
Oct 35°F 39°F ❄️ Dormant ~36 weeks
Nov 21°F 28°F ❄️ Dormant ~36 weeks
Dec 8°F 19°F ❄️ Dormant ~36 weeks

Highlighted rows = soil 60°F+ (safe for warm-season transplants). Compost finishes fastest during peak activity months.

Pest & Disease Pressure in Sanpete County

Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.

Insect Pest Pressure

4.9 / 10

Moderate — common pests appear but manageable with monitoring.

Disease Risk

1 / 10

Low disease risk — dry conditions reduce fungal problems.

Seasonal Risk

Spring Low
Summer High
Fall Low
Winter Low
View 5 common pests in your area
PestRisk LevelPeak Months
Aphids Moderate May, Jun, Jul, Aug
Japanese beetles Moderate Jun, Jul, Aug
Squash bugs Low Jun, Jul, Aug
Tomato hornworms Low Jul, Aug
Cabbage loopers Low May, Jun, Jul, Aug
Organic pest management tips
  • Maintain healthy soil with regular compost additions to build natural pest resistance
  • Practice crop rotation annually to break pest cycles
  • Encourage beneficial insects with flowering herbs like dill, fennel, and yarrow

Cover Crops for Sanpete County

Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with county-specific planting dates.

Spring Cover Crops (3 options) — Build soil before the main growing season
Crop Plant By Terminate N-Fixing Soil Benefit
Buckwheat May 27 Jul 20 Rapid growth, attracts pollinators, suppresses weeds
Sorghum-sudan grass May 31 Aug 3 Massive biomass, breaks compaction, suppresses nematodes
White clover Apr 20 Aug 3 ✓ Yes Living mulch, fixes nitrogen, permanent ground cover
Summer Cover Crops (1 options) — Fill gaps and suppress weeds between plantings
Crop Plant By Terminate N-Fixing Soil Benefit
Sunflowers Jun 8 Sep 14 Deep roots break compaction, attract pollinators and beneficial insects
Fall Cover Crops (6 options) — Plant after harvest to protect soil over winter
Crop Plant By Terminate N-Fixing Soil Benefit
Austrian winter peas Aug 1 Apr 30 ✓ Yes Fixes nitrogen, good for heavy clay soils
Daikon radish Aug 15 Apr 30 Deep taproot breaks compaction, excellent for clay soils
Hairy vetch Jul 10 May 7 ✓ Yes Excellent nitrogen fixer, good for depleted soils
Oats Aug 22 May 7 Quick biomass, winterkills in cold zones — no spring tillage needed
Winter rye Jul 7 May 7 Suppresses weeds, prevents erosion, breaks up compacted soil
Winter wheat Jul 3 May 7 Erosion control, weed suppression, good biomass

Wind & Microclimate

Wind dries soil, stresses plants, and affects frost patterns. Understanding your exposure helps with garden placement.

Seasonal Wind Speed

Spring: 15 mph   Summer: 10 mph

Fall: 13 mph   Winter: 14 mph

Prevailing wind: W. Windy area — plant a windbreak hedge on the W side of your garden.

Windbreak Benefit

6.6/10

Moderately beneficial — a simple fence or trellis can protect delicate crops from wind stress.

Frost Pocket Risk

High

Hilly terrain with 1,254 ft of elevation range — cold air pools in low spots. Avoid planting frost-sensitive crops in valleys.

Rainwater Harvesting Potential

How much water you can collect, when to collect it, and what size system you need for your garden.

Annual Collection

7,027 gal

Per 1,000 sq ft of roof area (at 80% collection efficiency)

Recommended Setup

8 rain barrels (55 gal each)

For a typical 500 sq ft garden. Serious collectors: consider a 2,000 gal tank.

Legal Status

Limited

Your state has quantity limits on rainwater collection — check local regulations before installing large systems.

Best Collection Months

Apr, May, Jul, Aug

Highest rainfall months — your barrels will fill up quickly during these months.

Months to Draw From Storage

Feb, Nov, Dec

Dry months when you'll rely on stored water — size your storage for this gap.

Rainwater collection tips for your area
  • Your county receives approximately 14.1 inches of rain per year
  • A 1,000 sq ft roof can collect roughly 7,027 gallons annually
  • Check UT state regulations — rainwater harvesting has quantity limits
  • In your dry climate, every drop counts — consider a larger cistern system
  • Position collection tanks in shade to reduce evaporation and algae growth

Soil & Growing Conditions in Sanpete County

Soil Type

Loam

Soil pH 6.5–7.8 · Well Drained drainage

Good candidate for raised beds to maximise drainage and extend the season.

Watering Needs

Drought stress: 5.5/10

Moderate drought pressure. Drip irrigation and mulching are highly recommended to maintain soil moisture through summer.

Season Tips

130-day frost-free season

Start warm-season crops indoors and focus on short-season varieties. Cold frames extend your season by 3–4 weeks in fall.

Your Free Printable Garden Planner

Plan every bed, every planting, every harvest — in one place. This 24-page printable includes your zone's planting calendar, a month-by-month task list, a seed inventory tracker, a harvest log, and succession-planting charts. Built to print, write in, and actually use all season.

Instant PDF download. No spam, unsubscribe any time.

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Recommended for Your Garden

🧪
Soil Test Kit $12-25

Test your soil pH, nitrogen, phosphorus, and potassium levels before planting.

📏
Digital pH Meter $10-20

Get instant, accurate soil pH readings to fine-tune your amendments.

🍂
Organic Compost $8-30

Boost soil fertility and structure with rich, well-aged organic compost.

🥬 Vegetables to Grow in Sanpete County

108 vegetables that grow well in Zone 6a with planting dates for Sanpete County.

Show all 108 vegetables with planting dates
Plant Start Indoors Direct Sow Transplant Harvest Days to Maturity
Acorn Squash Apr 16 May 28 Jun 4 Aug 27 – Oct 1 80–100
Amaranth Mar 26 May 28 Jun 4 Sep 3 – Oct 22 90–120
Arugula Apr 16 May 7 May 21 Jun 25 – Aug 27 30–50
Asparagus Jun 4 730–1095
Beets May 7 Jul 2 – Jul 30 50–70
Belgian Endive Apr 16 May 7 May 21 Sep 10 – Nov 5 110–150
Bitter Melon Mar 26 May 28 Jun 4 Aug 6 – Sep 17 60–90
Black Beans May 28 Aug 27 – Oct 15 90–120
Bok Choy Apr 16 May 7 May 21 Jul 2 – Aug 6 40–60
Broccoli Apr 16 May 7 May 21 Jul 23 – Sep 3 60–90
Broccoli Rabe Apr 16 May 7 May 21 Jul 2 – Aug 6 40–60
Brussels Sprouts Apr 16 May 7 May 21 Aug 20 – Oct 15 90–130
Butternut Squash Apr 16 May 28 Jun 4 Sep 3 – Oct 8 85–110
Cabbage Apr 16 May 7 May 21 Jul 23 – Sep 17 60–100
Calabash Mar 26 May 28 Jun 4 Aug 27 – Oct 22 80–120
Carrots May 7 Jul 9 – Aug 13 60–80
Cauliflower Apr 16 May 7 May 21 Jul 16 – Sep 17 55–100
Celeriac Apr 16 May 7 May 21 Sep 3 – Oct 8 100–120
Celery Apr 16 May 7 May 21 Aug 13 – Oct 8 80–120
Celtuce Apr 16 May 7 May 21 Jul 23 – Sep 3 60–90
Chard Apr 16 May 7 May 21 Jul 16 – Sep 3 50–60
Chickpeas Apr 16 May 7 May 21 Aug 13 – Sep 24 80–110
Chicory Apr 16 May 7 May 21 Jul 23 – Sep 3 60–85
Chinese Cabbage Apr 16 May 7 May 21 Jul 16 – Aug 13 50–70
Christmas Lima Beans Mar 26 May 28 Jun 4 Aug 27 – Oct 1 80–100
Collard Greens Apr 16 May 7 May 21 Jul 16 – Sep 17 55–75
Corn May 28 Jul 30 – Sep 24 60–100
Cowpeas May 28 Jul 30 – Sep 10 60–90
Cress Apr 16 May 7 May 21 Jun 4 – Jun 25 14–21
Crookneck Squash Apr 16 May 28 Jun 4 Jul 23 – Aug 20 45–60
Crosne May 7 Oct 8 – Nov 19 150–200
Cucumber Apr 16 May 28 Jun 4 Jul 30 – Sep 24 50–70
Daikon May 7 Jul 2 – Jul 30 50–70
Delicata Squash Apr 16 May 28 Jun 4 Aug 27 – Oct 1 80–100
Edamame May 28 Aug 13 – Sep 24 75–100
Eggplant Mar 12 May 28 Jun 4 Aug 13 – Oct 15 65–85
Endive Apr 16 May 7 May 21 Jul 9 – Aug 13 45–65
Escarole Apr 16 May 7 May 21 Jul 16 – Aug 13 50–70
Fava Beans Apr 16 May 7 May 21 Aug 6 – Sep 17 75–100
Fennel Mar 26 May 28 Jun 4 Aug 6 – Sep 17 60–90
Garlic 90–240
Green Beans May 28 Jul 23 – Sep 17 50–65
Horseradish Jun 4 Oct 8 – Dec 17 120–180
Hot Peppers Mar 12 May 28 Jun 4 Aug 13 – Nov 19 70–120
Hubbard Squash Apr 16 May 28 Jun 4 Sep 17 – Oct 22 100–120
Kabocha Apr 16 May 28 Jun 4 Sep 3 – Oct 1 85–100
Kai Lan Apr 16 May 7 May 21 Jul 9 – Aug 6 45–60
Kale Apr 16 May 7 May 21 Jul 16 – Sep 10 50–70
Kidney Beans May 28 Aug 27 – Oct 1 85–110
Kohlrabi Apr 16 May 7 May 21 Jul 9 – Aug 13 45–65
Komatsuna Apr 16 May 7 May 21 Jun 25 – Jul 30 35–50
Leeks Apr 16 May 7 May 21 Aug 20 – Nov 5 90–150
Lentils Apr 16 May 7 May 21 Aug 13 – Sep 24 80–110
Lettuce Apr 16 May 7 May 21 Jun 25 – Sep 3 30–60
Lima Beans May 28 Jul 30 – Sep 10 60–90
Loofah Mar 26 May 28 Jun 4 Sep 17 – Nov 19 100–150
Luffa Mar 26 May 28 Jun 4 Sep 3 – Nov 19 90–150
Mache Apr 16 May 7 May 21 Jul 2 – Aug 6 40–60
Melon Apr 16 May 28 Jun 4 Aug 13 – Oct 1 70–100
Microgreens Apr 16 May 7 May 21 May 28 – Jun 25 7–21
Mitsuba Apr 16 May 7 May 14 Jul 9 – Sep 3 50–70
Mizuna Apr 16 May 7 May 21 Jun 25 – Jul 23 30–45
Mustard Greens Apr 16 May 7 May 21 Jun 25 – Aug 27 30–50
Napa Cabbage Apr 16 May 7 May 21 Jul 16 – Aug 20 55–75
New Zealand Spinach Mar 26 May 28 Jun 4 Jul 30 – Aug 27 55–70
Okra Mar 26 May 28 Jun 4 Jul 30 – Sep 24 50–65
Onion Apr 16 May 7 May 21 Aug 20 – Oct 8 90–120
Pac Choi Apr 16 May 7 May 21 Jul 2 – Jul 30 40–55
Parsnip May 7 Aug 20 – Oct 1 100–130
Patty Pan Squash Apr 16 May 28 Jun 4 Jul 23 – Aug 20 45–60
Peas Apr 16 May 7 May 21 Jul 16 – Sep 10 55–70
Peppers Mar 12 May 28 Jun 4 Aug 6 – Oct 15 60–90
Pole Beans Mar 26 May 28 Jun 4 Jul 30 – Sep 24 55–70
Potatoes Mar 26 May 28 Jun 4 Aug 13 – Oct 22 70–120
Pumpkin Apr 16 May 28 Jun 4 Sep 3 – Oct 22 85–120
Purslane Apr 16 May 7 May 21 Jul 2 – Aug 6 40–60
Radicchio Apr 16 May 7 May 21 Jul 23 – Aug 27 60–80
Radish May 7 Jun 4 – Jun 25 22–35
Rhubarb Jun 11 365–730
Romanesco Apr 16 May 7 May 21 Aug 6 – Sep 17 75–100
Rutabaga May 7 Jul 30 – Sep 3 80–100
Salsify May 7 Aug 20 – Oct 1 100–130
Savoy Cabbage Apr 16 May 7 May 21 Jul 30 – Sep 24 70–110
Scallions Apr 16 May 7 May 21 Jul 16 – Aug 13 50–70
Scarlet Runner Beans Mar 26 May 28 Jun 4 Aug 6 – Sep 10 60–80
Shallot Apr 16 May 7 May 21 Aug 20 – Oct 8 90–120
Shiso Apr 2 May 28 Jun 4 Jul 30 – Sep 24 50–70
Snap Peas Mar 26 May 28 Jun 4 Jul 30 – Sep 24 55–70
Snow Peas Apr 16 May 7 May 21 Jul 16 – Sep 10 50–65
Soybeans May 28 Aug 20 – Oct 15 80–120
Spaghetti Squash Apr 16 May 28 Jun 4 Sep 3 – Oct 1 85–100
Spinach Apr 16 May 7 May 21 Jun 25 – Aug 27 35–50
Squash (Summer) Apr 16 May 28 Jun 4 Jul 23 – Sep 24 45–65
Squash (Winter) Apr 16 May 28 Jun 4 Aug 27 – Oct 22 80–120
Sunchoke Jun 4 Sep 24 – Nov 19 110–150
Sunflower Mar 26 May 28 Jun 4 Aug 13 – Oct 1 70–100
Sweet Corn May 28 Jul 30 – Sep 10 60–90
Sweet Potatoes Mar 26 May 28 Jun 4 Sep 3 – Oct 22 90–120
Tatsoi Apr 16 May 7 May 21 Jun 25 – Jul 30 35–50
Tomatillo Mar 26 May 28 Jun 4 Aug 6 – Oct 15 60–85
Tomatoes Mar 26 May 28 Jun 4 Aug 6 – Oct 15 60–85
Turnip May 7 Jun 18 – Jul 23 40–60
Watercress Apr 16 May 7 May 21 Jul 2 – Aug 6 40–60
Watermelon Apr 16 May 28 Jun 4 Aug 13 – Oct 1 70–100
Wax Beans May 28 Jul 23 – Sep 17 50–65
Winter Melon Mar 26 May 28 Jun 4 Sep 3 – Oct 22 90–120
Yard Long Beans Mar 26 May 28 Jun 4 Jul 30 – Sep 10 55–80
Zucchini Apr 16 May 28 Jun 4 Jul 23 – Sep 17 45–60

🍓 Fruits to Grow in Sanpete County

27 fruits that grow well in Zone 6a with planting dates for Sanpete County.

Show all 27 fruits with planting dates
Plant Start Indoors Direct Sow Transplant Harvest Days to Maturity
Alpine Strawberries Jun 11 Sep 10 – Dec 24 90–180
Aronia Jun 11 730–1095
Blackberries Jun 11 365–730
Blueberries Jun 11 730–1095
Boysenberries Jun 11 365–730
Cantaloupe Jun 11 Aug 20 – Sep 24 70–90
Che Fruit Jun 11 1095–1825
Cranberries Jun 11 730–1095
Currants Jun 11 730–1095
Elderberries Jun 11 730–1095
Goji Berries Jun 11 730–1095
Gooseberries Jun 11 730–1095
Grapes Jun 11 730–1095
Ground Cherry Jun 11 Aug 20 – Oct 15 65–80
Hardy Kiwi Jun 11 1095–1825
Haskaps Jun 11 730–1095
Honeydew Jun 11 Sep 3 – Oct 15 80–110
Jostaberry Jun 11 730–1095
Lingonberries Jun 11 730–1095
Medlar Jun 11 1095–1825
Mulberries Jun 11 730–1825
Pawpaw Jun 11 1095–2555
Persimmon Jun 11 1095–2555
Quince Jun 11 1095–1825
Raspberries Jun 11 365–730
Serviceberries Jun 11 730–1095
Strawberries Jun 11 Sep 10 – Dec 24 90–365

🌿 Herbs to Grow in Sanpete County

38 herbs that grow well in Zone 6a with planting dates for Sanpete County.

Show all 38 herbs with planting dates
Plant Start Indoors Direct Sow Transplant Harvest Days to Maturity
Angelica Apr 16 May 7 May 14 365–730
Anise Apr 16 May 7 May 14 Aug 13 – Oct 29 90–120
Basil Apr 2 May 28 Jun 4 Jul 30 – Oct 1 50–75
Bee Balm May 28 Aug 27 – Nov 12 90–120
Borage Apr 16 May 7 May 14 Jul 9 – Aug 27 50–60
Caraway Apr 16 May 7 May 14 365–450
Catnip May 28 Jul 30 – Oct 1 60–80
Chamomile Apr 16 May 7 May 14 Jul 16 – Sep 24 60–90
Chervil Apr 16 May 7 May 14 Jun 25 – Aug 27 40–60
Chives May 28 Jul 30 – Oct 8 60–90
Cilantro Apr 16 May 7 May 14 Jun 25 – Aug 27 40–60
Comfrey May 28 Jul 30 – Oct 8 60–90
Cumin Apr 16 May 7 May 14 Aug 27 – Oct 29 100–120
Dill Apr 16 May 7 May 14 Jun 25 – Aug 27 40–60
Echinacea May 28 Oct 1 – Dec 10 120–180
Epazote Apr 2 May 28 Jun 4 Jul 23 – Sep 17 45–60
Fennel (herb) Apr 16 May 7 May 14 Jul 16 – Sep 24 60–90
Feverfew May 28 Aug 27 – Nov 12 90–120
Garlic Chives May 28 Jul 30 – Oct 8 60–90
Horehound May 28 Aug 13 – Oct 8 75–90
Hyssop May 28 Aug 6 – Oct 8 70–90
Lavender May 28 Aug 27 – Dec 10 90–200
Lemon Balm May 28 Jul 30 – Sep 17 60–70
Lemon Thyme May 28 Aug 6 – Oct 8 70–90
Lovage May 28 Aug 6 – Oct 8 70–90
Marjoram May 28 Jul 30 – Oct 8 60–90
Mint May 28 Jul 30 – Oct 8 60–90
Oregano May 28 Jul 30 – Oct 8 60–90
Parsley Apr 16 May 7 May 14 Jul 16 – Sep 17 60–80
Rue May 28 Aug 6 – Oct 8 70–90
Sage May 28 Aug 13 – Oct 8 75–90
Savory May 28 Jul 23 – Sep 17 50–70
Sorrel Apr 16 May 7 May 14 Jun 25 – Aug 27 40–60
Tarragon May 28 Jul 30 – Oct 8 60–90
Thai Basil Apr 2 May 28 Jun 4 Jul 30 – Oct 1 50–75
Thyme May 28 Aug 6 – Oct 8 70–90
Valerian May 28 Oct 1 – Dec 10 120–180
Yarrow May 28 Aug 27 – Nov 12 90–120
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Monthly Planting Guide for Sanpete County

Gardening Guides & Resources

Helpful guides from The Ultimate Homestead to improve your garden in Sanpete County.

Frequently Asked Questions

What planting zone is Sanpete County, UT?

Sanpete County is in USDA Hardiness Zone 6a. This zone classification determines which perennial plants survive winter and sets the baseline for frost timing across the county.

When is the last frost in Sanpete County, UT?

Based on 31 years of NOAA weather station data, the median last spring frost in Sanpete County falls around May 21. In 8 out of 10 years, last frost lands between May 1 and June 10 — a 40-day window of variability. Use June 10 as your conservative safe-to-plant date for frost-sensitive crops.

When is the first fall frost in Sanpete County, UT?

The median first fall frost in Sanpete County arrives around September 28. In cold years it can arrive as early as September 14; in mild years as late as October 17. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.

How long is the growing season in Sanpete County?

Sanpete County has a frost-free growing season of approximately 130 days. Focus on short-season varieties and start warm-season crops indoors 6–8 weeks before last frost. Climate records show the growing season is trending longer by about 2.52 days per decade.

What is the soil like in Sanpete County for gardening?

Sanpete County has predominantly Loam soil with a pH range of 6.5–7.8 and Well Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.

What is grown commercially in Sanpete County?

Sanpete County has commercial agriculture that includes Hay, Cattle, Wheat, Sugar Beets, Barley. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.

Is Sanpete County a good location for home gardening?

Sanpete County scores 29/100 (Challenging) on our Microclimate Index, which combines frost reliability, drought pressure, soil challenge, elevation risk, and long-term climate trend. Gardening here benefits from close attention to frost timing and season extension due to the challenging microclimate factors.

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Your Sanpete County Garden Planner — Free

A 24-page printable planner built for Sanpete County (Zone 6a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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The Gardener's Encyclopedia to Companion Planting

The Gardener's Encyclopedia to Companion Planting

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The pairings that make vegetables, herbs, and flowers grow better — and the ones that quietly wreck a bed.

  • Proven pairings for 200+ vegetables, herbs, flowers, and fruits
  • Full seed-starting + planting schedule with timing and spacing
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Seed Saving & Storage Guide

Seed Saving & Storage Guide

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Most saved seeds go bad before next season. This shows exactly when to pick, how to dry, and where to store seeds from 200 plants so yours don't.

  • 200 plants, step-by-step: life cycle, pollination type, isolation
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Composting Guide for Homesteaders

Composting Guide for Homesteaders

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Turn kitchen scraps and yard waste into compost that actually feeds the garden — instead of a pile that smells, attracts pests, and never breaks down.

  • 14 sections on composting methods, soil science, and troubleshooting
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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA GHCN-D daily station data (1994–2024) from 3 weather stations in or near Sanpete County (31 years of records). Frost dates represent 50% probability averages; local conditions vary by elevation and microclimate. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.