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Millard County, UT — Planting Guide

Millard County, Utah Zone 6a June

Millard County, Utah gardeners: here's your June plan

June is a pivotal month for Millard County, Utah gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost May 16
Avg. first frost September 30
Soil temp (4") 50°F
Watering High
Pest pressure High
Daylight 14.7 hrs
  1. Transplant alpine strawberries, aronia, and blackberries outside

    Pick a cloudy afternoon or evening to plant. Less transplant shock, and your seedlings will barely blink.

  2. Indoor seed-starting week for cucumber, kale, and lettuce

    These need a head start before your last frost (May 16). Sow into cells now so you're ready to transplant in a few weeks.

  3. Bring in the lettuce, radish, and anemones

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

Get ahead of July
  • Starting indoors: basil, peppers, and pole beans
  • First harvests: basil, carrots, and cucumber
  • Fall sowing: carrots, kale, and lettuce

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Millard County is in USDA Zone 6a. The average last spring frost is May 16 and the first fall frost is September 30, giving you a growing season of approximately 137 days.

At an elevation of 6,525 ft, Millard County receives approximately 24 in of rainfall annually. Summer highs average 84°F with winter lows around 19°F. The predominant soil type is Loam.

Based on 31 years of NOAA climate station data, the last frost date here varies by 43 days year to year — ranging from April 27 in warm years to June 9 in cold years. The growing season is trending longer by about 1.25 days per decade. Millard County scores 40/100 (Moderate) on the Microclimate Index.

🌡️ Zone

6a (-10°F to -5°F min)

❄️ Last Frost

May 16

🍂 First Frost

September 30

📅 Growing Season

137 days

⛰️ Elevation

6,525 ft

🌧️ Annual Rainfall

24 in

Millard County, UT Short season
137 days
Last Spring Frost May 16
137 growing days
First Fall Frost September 30

Monthly Watering Calendar for Millard County

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

For new gardeners: Watering by the calendar wastes water. Watering by the soil moisture (or by a free rain gauge) cuts your water use 30%+ and produces healthier roots. Millard County's 24" annual baseline is the starting point.

1"/wk 0" 1.3" 2.5" 3.8" 5" Jan 1.8" Feb 1.5" Mar 2" +1.6" Apr 2.7" +1.6" May 2.7" +2.6" Jun 1.7" +2.2" Jul 2.1" +2.1" Aug 2.2" +2.3" Sep 2" +2.1" Oct 2.2" Nov 1.6" Dec 1.5"
Rainfall sufficient Supplemental water needed Heavy watering required - - - 1"/week garden need
View detailed monthly data
MonthAvg RainfallRainy DaysExtra Water NeededWatering Effort
Jan 1.8 in 7 days None
Feb 1.5 in 5 days None
Mar 2 in 8 days None
Apr 2.7 in 7 days 1.6 in High
May 2.7 in 7 days 1.6 in High
Jun 1.7 in 4 days 2.6 in High
Jul 2.1 in 5 days 2.2 in High
Aug 2.2 in 6 days 2.1 in High
Sep 2 in 5 days 2.3 in High
Oct 2.2 in 5 days 2.1 in High
Nov 1.6 in 6 days None
Dec 1.5 in 7 days None

Annual total: 24 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.

Millard County Soil Profile

Soil Type

Loam

Soil pH

6.5-8

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 16 → Sep 30 137 frost-free days Protect crops frost returns Apr May Jun Jul Aug Sep Oct Nov Safe: Jun 9 Protect by: Oct 18

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 9 Oct 18 131 days
Cautious May 25 Oct 7 135 days
Average year May 16 Sep 30 137 days
Optimistic May 7 Sep 21 137 days
Aggressive (risky) Apr 27 Sep 13 139 days
📊
How predictable are frost dates here?

Not very — frost dates can vary by ±43 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 1.3 days per decade). Spring is arriving earlier than it used to. Good news for gardeners.

Gardening Difficulty Score

40 Moderate
Frost Timing Risk
10.0/10
Drought Risk
7.5/10
Soil Difficulty
1.0/10
Altitude Challenge
10.0/10
Climate Shift
5.0/10
Rainfall Challenge
2.4/10

Millard County presents some gardening challenges. Choose adapted varieties and plan around frost dates.

Zone 6a Frost Countdown
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Last Frost: May 16 First Frost: Sep 30

Local Gardening Help in Millard 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 Millard County's climate and soil.

County Extension Office

Millard 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 Millard County

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

Why Buy Local

Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Millard 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 Millard County UT" or "garden center Millard 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 Millard County UT" or check your extension office and local parks department. Facebook groups like "Millard 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.

Show 6 more succession options
After Sweet Corn (harvest ends Aug 29) 32 days until frost
After Mustard Greens (harvest ends Aug 22) 39 days until frost
After Kohlrabi (harvest ends Aug 8) 53 days until frost
After Irises (harvest ends Aug 15) 46 days until frost
After Hyacinths (harvest ends May 23) 130 days until frost
After Columbine (harvest ends Aug 29) 32 days until frost

Sunlight & Day Length in Millard County

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

Why it matters: Photoperiod-sensitive crops will fail spectacularly if planted at the wrong latitude. Sweet onions in Michigan? Tiny. Spanish onions in Florida? Tiny. Match variety to Millard County's daylight pattern and you'll see the difference.

Longest Day

14.7 hours

Summer solstice daylight

Shortest Day

9.3 hours

Winter solstice daylight

Peak Sun Hours

11 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 5.3 hr Short day
February 10.5 hr 6.1 hr Short day
March 11.7 hr 7.2 hr Short day
April 13 hr 7.4 hr Neutral
May 14.1 hr 8.4 hr Long day
June 14.7 hr 11 hr Long day
July 14.5 hr 10.2 hr Long day
August 13.5 hr 9.1 hr Neutral
September 12.2 hr 8.3 hr Neutral
October 10.9 hr 6.9 hr Short day
November 9.8 hr 5.6 hr Short day
December 9.3 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 in Millard County

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

Why this matters: Soil temperature predicts plant emergence better than calendar dates. Millard County's spring soil warm-up curve tells you which weeks are safe for direct-sow beans, cucumbers, squash, and corn.

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 4°F 12°F ❄️ Dormant ~36 weeks
Feb 6°F 10°F ❄️ Dormant ~36 weeks
Mar 12°F 17°F ❄️ Dormant ~36 weeks
Apr 27°F 25°F ❄️ Dormant ~36 weeks
May 39°F 35°F ❄️ Dormant ~36 weeks
Jun 50°F 44°F 🐢 Slow ~24 weeks
Jul 57°F 52°F ♻️ Active ~14 weeks
Aug 57°F 53°F ♻️ Active ~14 weeks
Sep 52°F 50°F ♻️ Active ~14 weeks
Oct 39°F 40°F ❄️ Dormant ~36 weeks
Nov 22°F 31°F ❄️ Dormant ~36 weeks
Dec 12°F 20°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 Millard County

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

The practical takeaway: Pest and disease pressure is the X-factor most beginners under-plan for. Millard County's climate determines whether you can mostly "plant and see" or whether you need a pest-management routine from the first seedling.

Insect Pest Pressure

5 / 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 Moderate Jul, Aug
Cabbage loopers Moderate 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 Millard County

Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with planting dates calibrated for your area.

For new gardeners: The "chop and drop" approach to cover crops: cut them down right before flowering, let them lay on the surface as mulch, plant your vegetables through the mulch. Less work, healthier soil.

Spring Cover Crops (3 options) — Build soil before the main growing season
Crop Plant By Terminate N-Fixing Soil Benefit
Buckwheat May 21 Jul 29 Rapid growth, attracts pollinators, suppresses weeds
Sorghum-sudan grass May 24 Jul 29 Massive biomass, breaks compaction, suppresses nematodes
White clover Apr 15 Aug 5 ✓ 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 6 Sep 2 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 6 Apr 25 ✓ Yes Fixes nitrogen, good for heavy clay soils
Daikon radish Aug 17 May 2 Deep taproot breaks compaction, excellent for clay soils
Hairy vetch Jul 24 Apr 25 ✓ Yes Excellent nitrogen fixer, good for depleted soils
Oats Aug 25 May 2 Quick biomass, winterkills in cold zones — no spring tillage needed
Winter rye Jul 2 Apr 25 Suppresses weeds, prevents erosion, breaks up compacted soil
Winter wheat Jul 8 May 2 Erosion control, weed suppression, good biomass

Wind & Microclimate in Millard County

For new gardeners: Wind shapes the garden you don't think about: bee paths, evaporation, structural stress on tomato cages. Millard County's 11.0 mph background level is a baseline you should know before placing the tallest crops (sunflowers, pole beans, sweet corn).

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

Seasonal Wind Speed

Spring: 15 mph   Summer: 11 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

6.7/10

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

Frost Pocket Risk

High

Hilly terrain with 2,771 ft of elevation range — cold air pools in low spots. Avoid planting frost-sensitive crops in valleys.

Rainwater Harvesting in Millard County

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

The practical takeaway: Rainwater scales linearly with roof area. A 2,000 sq ft roof in Millard County captures ~1,200 gallons per 1" of rain — given 24" annual rainfall, that's thousands of gallons a year if you have storage to hold it.

Annual Collection

11,961 gal

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

Recommended Setup

7 rain barrels (55 gal each)

For a typical 500 sq ft garden. Serious collectors: consider a 1,500 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, Aug, Oct

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 24.0 inches of rain per year
  • A 1,000 sq ft roof can collect roughly 11,961 gallons annually
  • Check UT state regulations — rainwater harvesting has quantity limits
  • Stock up on stored water before your dry season (Feb, Nov, Dec)
  • Use a first-flush diverter to keep roof debris out of your collection

Soil & Growing Conditions in Millard County

Soil Type

Loam

Soil pH 6.5–8 · Well Drained drainage

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

Watering Needs

Drought stress: 7.5/10

High drought stress. Consistent irrigation is essential — consider drip systems, heavy mulch, and drought-tolerant varieties.

Season Tips

137-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 22-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 Millard County

107 vegetables that grow well in Zone 6a with planting dates for Millard County.

Show all 107 vegetables with planting dates
Plant Start Indoors Direct Sow Transplant Fall Plant Harvest Days to Maturity
Acorn Squash Apr 11 May 23 May 30 Aug 22 – Sep 26 80–100
Amaranth Mar 21 May 23 May 30 Aug 29 – Oct 17 90–120
Arugula Apr 11 May 2 May 16 Jul 22 Jun 20 – Aug 22 30–50
Asparagus May 30 730–1095
Beets May 2 Jul 22 Jun 27 – Jul 25 50–70
Belgian Endive Apr 11 May 2 May 16 Jul 22 Sep 5 – Oct 31 110–150
Bitter Melon Mar 21 May 23 May 30 Aug 1 – Sep 12 60–90
Black Beans May 23 Aug 22 – Oct 10 90–120
Bok Choy Apr 11 May 2 May 16 Jul 22 Jun 27 – Aug 1 40–60
Broccoli Apr 11 May 2 May 16 Jul 22 Jul 18 – Aug 29 60–90
Broccoli Rabe Apr 11 May 2 May 16 Jul 22 Jun 27 – Aug 1 40–60
Brussels Sprouts Apr 11 May 2 May 16 Jul 22 Aug 15 – Oct 10 90–130
Butternut Squash Apr 11 May 23 May 30 Aug 29 – Oct 3 85–110
Cabbage Apr 11 May 2 May 16 Jul 22 Jul 18 – Sep 12 60–100
Calabash Mar 21 May 23 May 30 Aug 22 – Oct 17 80–120
Carrots May 2 Jul 22 Jul 4 – Aug 8 60–80
Cauliflower Apr 11 May 2 May 16 Jul 22 Jul 11 – Sep 12 55–100
Celeriac Apr 11 May 2 May 16 Jul 22 Aug 29 – Oct 3 100–120
Celery Apr 11 May 2 May 16 Jul 22 Aug 8 – Oct 3 80–120
Celtuce Apr 11 May 2 May 16 Jul 22 Jul 18 – Aug 29 60–90
Chard Apr 11 May 2 May 16 Jul 22 Jul 11 – Aug 29 50–60
Chickpeas Apr 11 May 2 May 16 Jul 22 Aug 8 – Sep 19 80–110
Chicory Apr 11 May 2 May 16 Jul 22 Jul 18 – Aug 29 60–85
Chinese Cabbage Apr 11 May 2 May 16 Jul 22 Jul 11 – Aug 8 50–70
Christmas Lima Beans Mar 21 May 23 May 30 Aug 22 – Sep 26 80–100
Collard Greens Apr 11 May 2 May 16 Jul 22 Jul 11 – Sep 12 55–75
Corn May 23 Jul 25 – Sep 19 60–100
Cowpeas May 23 Jul 25 – Sep 5 60–90
Cress Apr 11 May 2 May 16 Jul 22 May 30 – Jun 20 14–21
Crookneck Squash Apr 11 May 23 May 30 Jul 18 – Aug 15 45–60
Crosne May 2 Jul 22 Oct 3 – Nov 14 150–200
Cucumber Apr 11 May 23 May 30 Jul 25 – Sep 19 50–70
Daikon May 2 Jul 22 Jun 27 – Jul 25 50–70
Delicata Squash Apr 11 May 23 May 30 Aug 22 – Sep 26 80–100
Edamame May 23 Aug 8 – Sep 19 75–100
Eggplant Mar 7 May 23 May 30 Aug 8 – Oct 10 65–85
Endive Apr 11 May 2 May 16 Jul 22 Jul 4 – Aug 8 45–65
Escarole Apr 11 May 2 May 16 Jul 22 Jul 11 – Aug 8 50–70
Fava Beans Apr 11 May 2 May 16 Jul 22 Aug 1 – Sep 12 75–100
Fennel Mar 21 May 23 May 30 Aug 1 – Sep 12 60–90
Garlic Aug 19 Nov 18 – Mar 3 90–240
Green Beans May 23 Jul 18 – Sep 12 50–65
Horseradish May 30 Oct 3 – Dec 12 120–180
Hot Peppers Mar 7 May 23 May 30 Aug 8 – Nov 14 70–120
Hubbard Squash Apr 11 May 23 May 30 Sep 12 – Oct 17 100–120
Kabocha Apr 11 May 23 May 30 Aug 29 – Sep 26 85–100
Kai Lan Apr 11 May 2 May 16 Jul 22 Jul 4 – Aug 1 45–60
Kale Apr 11 May 2 May 16 Jul 22 Jul 11 – Sep 5 50–70
Kidney Beans May 23 Aug 22 – Sep 26 85–110
Kohlrabi Apr 11 May 2 May 16 Jul 22 Jul 4 – Aug 8 45–65
Komatsuna Apr 11 May 2 May 16 Jul 22 Jun 20 – Jul 25 35–50
Leeks Apr 11 May 2 May 16 Jul 22 Aug 15 – Oct 31 90–150
Lentils Apr 11 May 2 May 16 Jul 22 Aug 8 – Sep 19 80–110
Lettuce Apr 11 May 2 May 16 Jul 22 Jun 20 – Aug 29 30–60
Lima Beans May 23 Jul 25 – Sep 5 60–90
Loofah Mar 21 May 23 May 30 Sep 12 – Nov 14 100–150
Luffa Mar 21 May 23 May 30 Aug 29 – Nov 14 90–150
Mache Apr 11 May 2 May 16 Jul 22 Jun 27 – Aug 1 40–60
Melon Apr 11 May 23 May 30 Aug 8 – Sep 26 70–100
Microgreens Apr 11 May 2 May 16 Jul 22 May 23 – Jun 20 7–21
Mitsuba Apr 11 May 2 May 9 Jul 22 Jul 4 – Aug 29 50–70
Mizuna Apr 11 May 2 May 16 Jul 22 Jun 20 – Jul 18 30–45
Mustard Greens Apr 11 May 2 May 16 Jul 22 Jun 20 – Aug 22 30–50
Napa Cabbage Apr 11 May 2 May 16 Jul 22 Jul 11 – Aug 15 55–75
New Zealand Spinach Mar 21 May 23 May 30 Jul 25 – Aug 22 55–70
Okra Mar 21 May 23 May 30 Jul 25 – Sep 19 50–65
Onion Apr 11 May 2 May 16 Jul 22 Aug 15 – Oct 3 90–120
Pac Choi Apr 11 May 2 May 16 Jul 22 Jun 27 – Jul 25 40–55
Parsnip May 2 Jul 22 Aug 15 – Sep 26 100–130
Patty Pan Squash Apr 11 May 23 May 30 Jul 18 – Aug 15 45–60
Peas Apr 11 May 2 May 16 Jul 22 Jul 11 – Sep 5 55–70
Peppers Mar 7 May 23 May 30 Aug 1 – Oct 10 60–90
Pole Beans Mar 21 May 23 May 30 Jul 25 – Sep 19 55–70
Potatoes Mar 21 May 23 May 30 Aug 8 – Oct 17 70–120
Pumpkin Apr 11 May 23 May 30 Aug 29 – Oct 17 85–120
Purslane Apr 11 May 2 May 16 Jul 22 Jun 27 – Aug 1 40–60
Radicchio Apr 11 May 2 May 16 Jul 22 Jul 18 – Aug 22 60–80
Radish May 2 Jul 22 May 30 – Jun 20 22–35
Rhubarb Jun 6 365–730
Romanesco Apr 11 May 2 May 16 Jul 22 Aug 1 – Sep 12 75–100
Rutabaga May 2 Jul 22 Jul 25 – Aug 29 80–100
Salsify May 2 Jul 22 Aug 15 – Sep 26 100–130
Savoy Cabbage Apr 11 May 2 May 16 Jul 22 Jul 25 – Sep 19 70–110
Scallions Apr 11 May 2 May 16 Jul 22 Jul 11 – Aug 8 50–70
Scarlet Runner Beans Mar 21 May 23 May 30 Aug 1 – Sep 5 60–80
Shallot Apr 11 May 2 May 16 Jul 22 Aug 15 – Oct 3 90–120
Shiso Mar 28 May 23 May 30 Jul 25 – Sep 19 50–70
Snap Peas Mar 21 May 23 May 30 Jul 25 – Sep 19 55–70
Snow Peas Apr 11 May 2 May 16 Jul 22 Jul 11 – Sep 5 50–65
Soybeans May 23 Aug 15 – Oct 10 80–120
Spaghetti Squash Apr 11 May 23 May 30 Aug 29 – Sep 26 85–100
Spinach Apr 11 May 2 May 16 Jul 22 Jun 20 – Aug 22 35–50
Squash (Summer) Apr 11 May 23 May 30 Jul 18 – Sep 19 45–65
Squash (Winter) Apr 11 May 23 May 30 Aug 22 – Oct 17 80–120
Sunchoke May 30 Sep 19 – Nov 14 110–150
Sweet Corn May 23 Jul 25 – Sep 5 60–90
Sweet Potatoes Mar 21 May 23 May 30 Aug 29 – Oct 17 90–120
Tatsoi Apr 11 May 2 May 16 Jul 22 Jun 20 – Jul 25 35–50
Tomatillo Mar 21 May 23 May 30 Aug 1 – Oct 10 60–85
Tomatoes Mar 21 May 23 May 30 Aug 1 – Oct 10 60–85
Turnip May 2 Jul 22 Jun 13 – Jul 18 40–60
Watercress Apr 11 May 2 May 16 Jul 22 Jun 27 – Aug 1 40–60
Watermelon Apr 11 May 23 May 30 Aug 8 – Sep 26 70–100
Wax Beans May 23 Jul 18 – Sep 12 50–65
Winter Melon Mar 21 May 23 May 30 Aug 29 – Oct 17 90–120
Yard Long Beans Mar 21 May 23 May 30 Jul 25 – Sep 5 55–80
Zucchini Apr 11 May 23 May 30 Jul 18 – Sep 12 45–60

🍓 Fruits to Grow in Millard County

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

Show all 27 fruits with planting dates
Plant Start Indoors Direct Sow Transplant Fall Plant Harvest Days to Maturity
Alpine Strawberries Jun 6 Sep 5 – Dec 19 90–180
Aronia Jun 6 730–1095
Blackberries Jun 6 365–730
Blueberries Jun 6 730–1095
Boysenberries Jun 6 365–730
Cantaloupe Jun 6 Aug 15 – Sep 19 70–90
Che Fruit Jun 6 1095–1825
Cranberries Jun 6 730–1095
Currants Jun 6 730–1095
Elderberries Jun 6 730–1095
Goji Berries Jun 6 730–1095
Gooseberries Jun 6 730–1095
Grapes Jun 6 730–1095
Ground Cherry Jun 6 Aug 15 – Oct 10 65–80
Hardy Kiwi Jun 6 1095–1825
Haskaps Jun 6 730–1095
Honeydew Jun 6 Aug 29 – Oct 10 80–110
Jostaberry Jun 6 730–1095
Lingonberries Jun 6 730–1095
Medlar Jun 6 1095–1825
Mulberries Jun 6 730–1825
Pawpaw Jun 6 1095–2555
Persimmon Jun 6 1095–2555
Quince Jun 6 1095–1825
Raspberries Jun 6 365–730
Serviceberries Jun 6 730–1095
Strawberries Jun 6 Sep 5 – Dec 19 90–365

🌿 Herbs to Grow in Millard County

35 herbs that grow well in Zone 6a with planting dates for Millard County.

Show all 35 herbs with planting dates
Plant Start Indoors Direct Sow Transplant Fall Plant Harvest Days to Maturity
Angelica Apr 11 May 2 May 9 Jul 22 365–730
Anise Apr 11 May 2 May 9 Jul 22 Aug 8 – Oct 24 90–120
Basil Mar 28 May 23 May 30 Jul 25 – Sep 26 50–75
Bee Balm May 23 Aug 22 – Nov 7 90–120
Borage Apr 11 May 2 May 9 Jul 22 Jul 4 – Aug 22 50–60
Caraway Apr 11 May 2 May 9 Jul 22 365–450
Catnip May 23 Jul 25 – Sep 26 60–80
Chamomile Apr 11 May 2 May 9 Jul 22 Jul 11 – Sep 19 60–90
Chervil Apr 11 May 2 May 9 Jul 22 Jun 20 – Aug 22 40–60
Chives May 23 Jul 25 – Oct 3 60–90
Cilantro Apr 11 May 2 May 9 Jul 22 Jun 20 – Aug 22 40–60
Comfrey May 23 Jul 25 – Oct 3 60–90
Cumin Apr 11 May 2 May 9 Jul 22 Aug 22 – Oct 24 100–120
Dill Apr 11 May 2 May 9 Jul 22 Jun 20 – Aug 22 40–60
Epazote Mar 28 May 23 May 30 Jul 18 – Sep 12 45–60
Fennel (herb) Apr 11 May 2 May 9 Jul 22 Jul 11 – Sep 19 60–90
Feverfew May 23 Aug 22 – Nov 7 90–120
Garlic Chives May 23 Jul 25 – Oct 3 60–90
Horehound May 23 Aug 8 – Oct 3 75–90
Hyssop May 23 Aug 1 – Oct 3 70–90
Lemon Balm May 23 Jul 25 – Sep 12 60–70
Lemon Thyme May 23 Aug 1 – Oct 3 70–90
Lovage May 23 Aug 1 – Oct 3 70–90
Marjoram May 23 Jul 25 – Oct 3 60–90
Mint May 23 Jul 25 – Oct 3 60–90
Oregano May 23 Jul 25 – Oct 3 60–90
Parsley Apr 11 May 2 May 9 Jul 22 Jul 11 – Sep 12 60–80
Rue May 23 Aug 1 – Oct 3 70–90
Sage May 23 Aug 8 – Oct 3 75–90
Savory May 23 Jul 18 – Sep 12 50–70
Sorrel Apr 11 May 2 May 9 Jul 22 Jun 20 – Aug 22 40–60
Tarragon May 23 Jul 25 – Oct 3 60–90
Thai Basil Mar 28 May 23 May 30 Jul 25 – Sep 26 50–75
Thyme May 23 Aug 1 – Oct 3 70–90
Valerian May 23 Sep 26 – Dec 5 120–180

🌸 Flowers to Grow in Millard County

53 flowers that grow well in Zone 6a with planting dates for Millard County.

Show all 53 flowers with planting dates
Plant Start Indoors Direct Sow Transplant Fall Plant Bloom Days to Maturity
Ageratum Mar 28 May 16 May 16 Jul 11 – Oct 17 60–75
Alliums Aug 19 Sep 16 – Oct 14 28–42
Anemones Apr 18 May 16 Jun 20 – Jul 18 90–120
Astilbe Mar 14 May 23 Aug 1 – Oct 10 70–100
Bachelor's Button Apr 4 Apr 18 May 16 Aug 19 Jul 18 – Oct 3 60–90
Begonias Mar 7 May 23 Aug 1 – Oct 31 70–90
Black-eyed Susan Mar 14 May 16 May 23 Aug 8 – Nov 21 60–80
Bleeding Hearts Mar 14 May 23 Jul 18 – Aug 22 60–90
Calendula Apr 4 Apr 18 May 16 Jul 4 – Oct 3 50–70
California Poppy Apr 18 Jun 27 – Aug 8 60–90
Celosia Apr 11 May 23 May 23 Jul 25 – Nov 7 60–90
Columbine Mar 14 May 30 May 30 Jul 25 – Aug 29 70–100
Coreopsis Mar 14 May 23 May 23 Aug 1 – Nov 21 60–80
Cosmos Apr 18 May 16 May 16 Jul 25 – Oct 31 60–90
Crocus Aug 19 Jul 8 – Jul 29 10–20
Daffodils Aug 19 Jul 15 – Aug 5 20–40
Dahlias Apr 18 May 23 May 23 Aug 8 – Nov 21 70–120
Daylily Mar 14 May 23 Aug 8 – Nov 21 60–90
Dianthus Mar 21 Apr 18 May 2 Jun 20 – Sep 19 60–80
Echinacea (Purple Coneflower) Mar 14 May 30 May 30 Aug 22 – Nov 28 70–90
Foxglove Mar 14 May 23 May 23 Jul 18 – Aug 22 80–120
Gaillardia (Blanket Flower) Mar 28 May 23 May 23 Aug 1 – Dec 5 70–100
Geraniums Mar 7 May 23 Aug 1 – Oct 31 70–100
Gladiolus May 16 May 16 Aug 1 – Nov 14 70–100
Hostas Mar 7 May 23 Aug 8 – Nov 21 60–90
Hyacinths Aug 19 Aug 5 – Aug 26 14–28
Hydrangeas Mar 7 May 23 Aug 1 – Nov 7 90–150
Impatiens Mar 21 May 23 Aug 1 – Nov 7 60–75
Irises Division May 23 Jul 18 – Aug 15 60–100
Larkspur Apr 18 Jun 27 – Aug 22 60–90
Lavender Mar 7 May 30 Aug 8 – Oct 3 90–120
Lilies Division May 23 Aug 1 – Nov 7 70–120
Lobelia Mar 14 May 2 Jun 27 – Sep 19 70–80
Lupine Mar 14 May 23 May 23 Jul 18 – Aug 22 75–100
Marigolds Apr 4 May 23 May 23 Jul 18 – Oct 17 50–70
Nasturtium Apr 18 May 23 May 23 Jul 18 – Nov 7 55–65
Pansy Mar 7 May 16 Aug 5 Jul 11 – Sep 12 70–90
Peonies Division May 23 Jul 25 – Aug 29 90–120
Petunia Mar 21 May 23 Aug 1 – Nov 7 70–90
Phlox Mar 14 May 23 May 23 Aug 1 – Oct 24 80–110
Portulaca Apr 11 May 23 May 23 Jul 11 – Oct 24 50–70
Ranunculus Apr 4 May 16 Jun 27 – Jul 25 90–120
Roses Mar 7 May 23 Aug 1 – Nov 21 90–180
Salvia Mar 14 May 23 Aug 1 – Nov 7 70–90
Sedum (Stonecrop) Mar 14 May 23 Sep 12 – Nov 28 60–90
Snapdragon Mar 7 Apr 25 May 16 Jul 25 – Oct 3 70–100
Sunflower Apr 25 May 23 May 23 Aug 15 – Nov 7 70–100
Sweet Alyssum Mar 28 Apr 25 May 16 Jun 27 – Sep 5 45–60
Sweet Pea Apr 4 Apr 11 May 16 Aug 1 – Oct 10 65–85
Tulips Aug 19 Jul 29 – Aug 26 15–30
Vinca (Annual) Mar 7 May 23 Aug 1 – Nov 7 70–90
Yarrow Mar 14 May 16 May 23 Aug 1 – Nov 21 60–90
Zinnia Apr 18 May 23 May 23 Aug 1 – Nov 7 60–70
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Monthly Planting Guide for Millard County

Gardening Guides & Resources

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

Frequently Asked Questions

What planting zone is Millard County, UT?

Millard 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 Millard County, UT?

Based on 31 years of NOAA weather station data, the median last spring frost in Millard County falls around May 16. In 8 out of 10 years, last frost lands between April 27 and June 9 — a 43-day window of variability. Use June 9 as your conservative safe-to-plant date for frost-sensitive crops.

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

The median first fall frost in Millard County arrives around September 30. In cold years it can arrive as early as September 13; in mild years as late as October 18. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.

How long is the growing season in Millard County?

Millard County has a frost-free growing season of approximately 137 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 1.25 days per decade.

What is the soil like in Millard County for gardening?

Millard County has predominantly Loam soil with a pH range of 6.5–8 and Well Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.

What is grown commercially in Millard County?

Millard 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 Millard County a good location for home gardening?

Millard County scores 40/100 (Moderate) 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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Composting Guide for Homesteaders

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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 Millard County (31 years of records). Frost dates represent 50% probability averages; local conditions vary by elevation and microclimate. Last updated: June 2026.

Sources & credits

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