Blog

Fayette County, IA — Planting Guide

Fayette County is in USDA Zone 4b. The average last spring frost is May 5 and the first fall frost is October 5, giving you a growing season of approximately 153 days.

At an elevation of 1,228 ft, Fayette County receives approximately 41.1 in of rainfall annually. Summer highs average 81°F with winter lows around 1°F. The predominant soil type is Silt Loam.

Based on 31 years of NOAA climate station data, the last frost date here varies by 28 days year to year — ranging from April 22 in warm years to May 20 in cold years. The growing season is trending shorter by about 0.9 days per decade. Fayette County scores 71/100 (Good) on the Microclimate Index.

🌡️ Zone

4b (-25°F to -20°F min)

❄️ Last Frost

May 5

🍂 First Frost

October 5

📅 Growing Season

153 days

⛰️ Elevation

1,228 ft

🌧️ Annual Rainfall

41.1 in

Fayette County, IA Moderate season
153 days
Last Spring Frost May 5
153 growing days
First Fall Frost October 5

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 1.9" Feb 2.1" Mar 2.5" Apr 4.5" May 4.6" Jun 4.5" Jul 4.8" Aug 4.4" +0.8" Sep 3.5" +1" Oct 3.3" Nov 2.8" Dec 2.1"
Rainfall sufficient Supplemental water needed Heavy watering required - - - 1"/week garden need
View detailed monthly data
MonthAvg RainfallRainy DaysExtra Water NeededWatering Effort
Jan 1.9 in 7 days None
Feb 2.1 in 7 days None
Mar 2.5 in 8 days None
Apr 4.5 in 9 days Low
May 4.6 in 9 days Low
Jun 4.5 in 9 days Low
Jul 4.8 in 10 days Low
Aug 4.4 in 9 days Low
Sep 3.5 in 8 days 0.8 in Moderate
Oct 3.3 in 7 days 1 in Moderate
Nov 2.8 in 7 days None
Dec 2.1 in 7 days None

Annual total: 41 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.

Fayette County Soil Profile

Soil Type

Silt Loam

Soil pH

6.2-6.8

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 5 → Oct 5 153 frost-free days Protect crops frost returns Apr May Jun Jul Aug Sep Oct Nov Safe: May 20 Protect by: Oct 15

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) May 20 Oct 15 148 days
Cautious May 14 Oct 9 148 days
Average year May 5 Oct 5 153 days
Optimistic Apr 28 Sep 28 153 days
Aggressive (risky) Apr 22 Sep 20 151 days
📊
How predictable are frost dates here?

Not very — frost dates can vary by ±28 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?

Slightly — seasons are trending a bit shorter (0.9 days/decade). Stay conservative with planting dates.

Gardening Difficulty Score

71 Good
Frost Timing Risk
10.0/10
Drought Risk
3.5/10
Soil Difficulty
0.0/10
Altitude Challenge
0.5/10
Climate Shift
3.6/10
Rainfall Challenge
0.0/10

Fayette County offers good growing conditions. A little planning around frost dates goes a long way.

Zone 4b Frost Countdown
--
Loading...
Last Frost: May 5 First Frost: Oct 5

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

County Extension Office

Fayette County Iowa State University Extension Extension Office

Phone: 515-294-6675

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 IA →

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 Fayette County

Soil testing Pest identification Gardening hotline
Finding local nurseries & garden centers in Fayette County

Why Buy Local

Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Fayette 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 Fayette County IA" or "garden center Fayette 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 Fayette County IA" or check your extension office and local parks department. Facebook groups like "Fayette County Gardeners" or "Iowa 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 Corn (harvest ends Sep 1) 34 days until frost
After Green Beans (harvest ends Aug 25) 41 days until frost
After Lettuce (harvest ends Aug 18) 48 days until frost
After Cauliflower (harvest ends Sep 1) 34 days until frost
Show 6 more succession options
After Kale (harvest ends Aug 25) 41 days until frost
After Peas (harvest ends Aug 25) 41 days until frost
After Cabbage (harvest ends Sep 1) 34 days until frost
After Spinach (harvest ends Aug 11) 55 days until frost
After Sweet Corn (harvest ends Aug 18) 48 days until frost
After Chard (harvest ends Aug 18) 48 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

15.1 hours

Summer solstice daylight

Shortest Day

8.9 hours

Winter solstice daylight

Peak Sun Hours

10.1 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 2h 6h 10h 13h 17h 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 9.2 hr 3.8 hr Short day
February 10.3 hr 4.4 hr Short day
March 11.7 hr 5.9 hr Short day
April 13.2 hr 6.9 hr Neutral
May 14.5 hr 8 hr Long day
June 15.1 hr 9.3 hr Long day
July 14.9 hr 10.1 hr Long day
August 13.8 hr 8.4 hr Neutral
September 12.3 hr 7 hr Neutral
October 10.8 hr 5.4 hr Short day
November 9.5 hr 3.6 hr Short day
December 8.9 hr 3.3 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 warm enough from Jun through Sep.

Best Month to Compost

Jul

Microbial activity peaks when soil is warm.

Active Composting

6 months

Solid season. Piles go dormant in winter.

60°F 70°F 23° 45° 68° 90° 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 15°F 22°F ❄️ Dormant ~36 weeks
Feb 18°F 22°F ❄️ Dormant ~36 weeks
Mar 24°F 28°F ❄️ Dormant ~36 weeks
Apr 42°F 38°F 🐢 Slow ~24 weeks
May 53°F 49°F ♻️ Active ~14 weeks
Jun 63°F 58°F ♻️ Active ~14 weeks
Jul 72°F 67°F 🔥 Peak ~8 weeks
Aug 73°F 69°F 🔥 Peak ~8 weeks
Sep 65°F 64°F ♻️ Active ~14 weeks
Oct 52°F 54°F ♻️ Active ~14 weeks
Nov 36°F 43°F ❄️ Dormant ~36 weeks
Dec 21°F 30°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 Fayette County

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

Insect Pest Pressure

5.5 / 10

Moderate — common pests appear but manageable with monitoring.

Disease Risk

5.2 / 10

Moderate — watch for mildew and blight during wet periods.

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
Cabbage worms Moderate Jun, Jul, Aug
Colorado potato beetle Low Jun, Jul
Flea beetles Low May, Jun, Jul
Slugs Moderate May, Jun, Jul, Aug, Sep
Organic pest management tips
  • Use row covers on susceptible crops during peak pest months
  • Apply neem oil preventatively every 7-14 days during active pest season
  • Interplant with strong-scented herbs (basil, marigold) to confuse pests
  • Hand-pick larger pests (beetles, caterpillars) in early morning when they're sluggish
  • Practice crop rotation — never plant the same family in the same spot within 3 years

Cover Crops for Fayette County

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

Spring Cover Crops (2 options) — Build soil before the main growing season
Crop Plant By Terminate N-Fixing Soil Benefit
Buckwheat May 8 Jul 27 Rapid growth, attracts pollinators, suppresses weeds
White clover Apr 7 Jul 27 ✓ 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 May 29 Sep 14 Deep roots break compaction, attract pollinators and beneficial insects
Fall Cover Crops (5 options) — Plant after harvest to protect soil over winter
Crop Plant By Terminate N-Fixing Soil Benefit
Daikon radish Aug 9 Apr 14 Deep taproot breaks compaction, excellent for clay soils
Hairy vetch Jul 19 Apr 21 ✓ Yes Excellent nitrogen fixer, good for depleted soils
Oats Sep 8 Apr 14 Quick biomass, winterkills in cold zones — no spring tillage needed
Winter rye Jul 9 Apr 21 Suppresses weeds, prevents erosion, breaks up compacted soil
Winter wheat Jul 9 Apr 14 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: 13 mph   Summer: 8 mph

Fall: 12 mph   Winter: 12 mph

Prevailing wind: SW. Moderate wind — consider a temporary windbreak for young seedlings.

Windbreak Benefit

6.5/10

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

Frost Pocket Risk

Low

Relatively flat terrain (181 ft range). Frost pocket risk is minimal — garden placement is flexible.

Rainwater Harvesting Potential

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

Annual Collection

20,434 gal

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

Recommended Setup

6 rain barrels (55 gal each)

For a typical 500 sq ft garden. Serious collectors: consider a 1,250 gal tank.

Legal Status

Unrestricted

Rainwater harvesting is fully legal in your state with no restrictions.

Best Collection Months

Apr, May, Jun, Jul

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

Months to Draw From Storage

Jan, Feb, 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 41.0 inches of rain per year
  • A 1,000 sq ft roof can collect roughly 20,434 gallons annually
  • Rainwater harvesting is fully legal in your state
  • Stock up on stored water before your dry season (Jan, Feb, Dec)
  • Use a first-flush diverter to keep roof debris out of your collection

Soil & Growing Conditions in Fayette County

Soil Type

Silt Loam

Soil pH 6.2–6.8 · Moderately Well Drained drainage

Native soil is well-suited to most vegetables and herbs with regular compost additions.

Watering Needs

Drought stress: 3.5/10

Low-to-moderate drought stress. Plan to water 1–2 times per week during peak summer. (41.1 in. annual rainfall)

Season Tips

153-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.

Free Garden Planner

Plan your entire garden season — organize planting dates, track what you're growing, and know exactly when to start seeds, transplant, and harvest.

Get My Free Planner →

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 Fayette County

96 vegetables that grow well in Zone 4b with planting dates for Fayette County.

Show all 96 vegetables with planting dates
Plant Start Indoors Direct Sow Transplant Harvest Days to Maturity
Acorn Squash Mar 24 May 19 May 26 Aug 18 – Sep 22 80–100
Amaranth Mar 3 May 19 May 26 Aug 25 – Oct 13 90–120
Arugula Mar 24 Apr 28 May 5 Jun 9 – Aug 11 30–50
Asparagus May 19 730–1095
Beets Apr 28 Jun 23 – Jul 21 50–70
Belgian Endive Mar 24 Apr 28 May 5 Aug 25 – Sep 29 110–150
Black Beans May 19 Aug 18 – Oct 6 90–120
Bok Choy Mar 24 Apr 28 May 5 Jun 16 – Jul 21 40–60
Broccoli Mar 24 Apr 28 May 5 Jul 7 – Aug 18 60–90
Broccoli Rabe Mar 24 Apr 28 May 5 Jun 16 – Jul 21 40–60
Brussels Sprouts Mar 24 Apr 28 May 5 Aug 4 – Sep 29 90–130
Butternut Squash Mar 24 May 19 May 26 Aug 25 – Sep 29 85–110
Cabbage Mar 24 Apr 28 May 5 Jul 7 – Sep 1 60–100
Carrots Apr 28 Jun 30 – Aug 4 60–80
Cauliflower Mar 24 Apr 28 May 5 Jun 30 – Sep 1 55–100
Celeriac Mar 24 Apr 28 May 5 Aug 18 – Sep 22 100–120
Celery Mar 24 Apr 28 May 5 Jul 28 – Sep 22 80–120
Celtuce Mar 24 Apr 28 May 5 Jul 7 – Aug 18 60–90
Chard Mar 24 Apr 28 May 5 Jun 30 – Aug 18 50–60
Chickpeas Mar 24 Apr 28 May 5 Jul 28 – Sep 8 80–110
Chicory Mar 24 Apr 28 May 5 Jul 7 – Aug 18 60–85
Chinese Cabbage Mar 24 Apr 28 May 5 Jun 30 – Jul 28 50–70
Christmas Lima Beans Mar 3 May 19 May 26 Aug 18 – Sep 22 80–100
Collard Greens Mar 24 Apr 28 May 5 Jun 30 – Sep 1 55–75
Corn May 19 Jul 21 – Sep 15 60–100
Cress Mar 24 Apr 28 May 5 May 19 – Jun 9 14–21
Crookneck Squash Mar 24 May 19 May 26 Jul 14 – Aug 11 45–60
Crosne Apr 28 Sep 29 – Sep 22 150–200
Cucumber Mar 24 May 19 May 26 Jul 21 – Sep 15 50–70
Daikon Apr 28 Jun 23 – Jul 21 50–70
Delicata Squash Mar 24 May 19 May 26 Aug 18 – Sep 22 80–100
Edamame May 19 Aug 4 – Sep 15 75–100
Endive Mar 24 Apr 28 May 5 Jun 23 – Jul 28 45–65
Escarole Mar 24 Apr 28 May 5 Jun 30 – Jul 28 50–70
Fava Beans Mar 24 Apr 28 May 5 Jul 21 – Sep 1 75–100
Fennel Mar 3 May 19 May 26 Jul 28 – Sep 8 60–90
Garlic 90–240
Green Beans May 19 Jul 14 – Sep 8 50–65
Horseradish May 19 Sep 22 – Oct 13 120–180
Hubbard Squash Mar 24 May 19 May 26 Sep 8 – Oct 13 100–120
Kabocha Mar 24 May 19 May 26 Aug 25 – Sep 22 85–100
Kai Lan Mar 24 Apr 28 May 5 Jun 23 – Jul 21 45–60
Kale Mar 24 Apr 28 May 5 Jun 30 – Aug 25 50–70
Kidney Beans May 19 Aug 18 – Sep 22 85–110
Kohlrabi Mar 24 Apr 28 May 5 Jun 23 – Jul 28 45–65
Komatsuna Mar 24 Apr 28 May 5 Jun 9 – Jul 14 35–50
Leeks Mar 24 Apr 28 May 5 Aug 4 – Sep 29 90–150
Lentils Mar 24 Apr 28 May 5 Jul 28 – Sep 8 80–110
Lettuce Mar 24 Apr 28 May 5 Jun 9 – Aug 18 30–60
Lima Beans May 19 Jul 21 – Sep 1 60–90
Mache Mar 24 Apr 28 May 5 Jun 16 – Jul 21 40–60
Melon Mar 24 May 19 May 26 Aug 4 – Sep 22 70–100
Microgreens Mar 24 Apr 28 May 5 May 12 – Jun 9 7–21
Mitsuba Mar 24 Apr 28 Apr 28 Jun 23 – Aug 18 50–70
Mizuna Mar 24 Apr 28 May 5 Jun 9 – Jul 7 30–45
Mustard Greens Mar 24 Apr 28 May 5 Jun 9 – Aug 11 30–50
Napa Cabbage Mar 24 Apr 28 May 5 Jun 30 – Aug 4 55–75
Onion Mar 24 Apr 28 May 5 Aug 4 – Sep 22 90–120
Pac Choi Mar 24 Apr 28 May 5 Jun 16 – Jul 14 40–55
Parsnip Apr 28 Aug 11 – Sep 22 100–130
Patty Pan Squash Mar 24 May 19 May 26 Jul 14 – Aug 11 45–60
Peas Mar 24 Apr 28 May 5 Jun 30 – Aug 25 55–70
Peppers Feb 17 May 19 May 26 Jul 28 – Oct 6 60–90
Pole Beans Mar 3 May 19 May 26 Jul 21 – Sep 15 55–70
Potatoes Mar 3 May 19 May 26 Aug 4 – Oct 13 70–120
Pumpkin Mar 24 May 19 May 26 Aug 25 – Oct 13 85–120
Purslane Mar 24 Apr 28 May 5 Jun 16 – Jul 21 40–60
Radicchio Mar 24 Apr 28 May 5 Jul 7 – Aug 11 60–80
Radish Apr 28 May 26 – Jun 16 22–35
Rhubarb Jun 2 365–730
Romanesco Mar 24 Apr 28 May 5 Jul 21 – Sep 1 75–100
Rutabaga Apr 28 Jul 21 – Aug 25 80–100
Salsify Apr 28 Aug 11 – Sep 22 100–130
Savoy Cabbage Mar 24 Apr 28 May 5 Jul 14 – Sep 8 70–110
Scallions Mar 24 Apr 28 May 5 Jun 30 – Jul 28 50–70
Scarlet Runner Beans Mar 3 May 19 May 26 Jul 28 – Sep 1 60–80
Shallot Mar 24 Apr 28 May 5 Aug 4 – Sep 22 90–120
Shiso Mar 10 May 12 May 26 Jul 21 – Sep 15 50–70
Snap Peas Mar 3 May 19 May 26 Jul 21 – Sep 15 55–70
Snow Peas Mar 24 Apr 28 May 5 Jun 30 – Aug 25 50–65
Soybeans May 19 Aug 11 – Oct 6 80–120
Spaghetti Squash Mar 24 May 19 May 26 Aug 25 – Sep 22 85–100
Spinach Mar 24 Apr 28 May 5 Jun 9 – Aug 11 35–50
Squash (Summer) Mar 24 May 19 May 26 Jul 14 – Sep 15 45–65
Squash (Winter) Mar 24 May 19 May 26 Aug 18 – Oct 13 80–120
Sunchoke May 19 Sep 8 – Oct 13 110–150
Sunflower Mar 3 May 19 May 26 Aug 4 – Sep 22 70–100
Sweet Corn May 19 Jul 21 – Sep 1 60–90
Tatsoi Mar 24 Apr 28 May 5 Jun 9 – Jul 14 35–50
Tomatillo Mar 3 May 19 May 26 Jul 28 – Oct 6 60–85
Tomatoes Mar 3 May 19 May 26 Jul 28 – Oct 6 60–85
Turnip Apr 28 Jun 9 – Jul 14 40–60
Watercress Mar 24 Apr 28 May 5 Jun 16 – Jul 21 40–60
Watermelon Mar 24 May 19 May 26 Aug 4 – Sep 22 70–100
Wax Beans May 19 Jul 14 – Sep 8 50–65
Zucchini Mar 24 May 19 May 26 Jul 14 – Sep 8 45–60

🍓 Fruits to Grow in Fayette County

22 fruits that grow well in Zone 4b with planting dates for Fayette County.

Show all 22 fruits with planting dates
Plant Start Indoors Direct Sow Transplant Harvest Days to Maturity
Alpine Strawberries Jun 2 Sep 1 – Oct 27 90–180
Aronia Jun 2 730–1095
Blueberries Jun 2 730–1095
Cantaloupe Jun 2 Aug 11 – Sep 15 70–90
Cranberries Jun 2 730–1095
Currants Jun 2 730–1095
Elderberries Jun 2 730–1095
Goji Berries Jun 2 730–1095
Gooseberries Jun 2 730–1095
Grapes Jun 2 730–1095
Ground Cherry Jun 2 Aug 11 – Oct 6 65–80
Hardy Kiwi Jun 2 1095–1825
Haskaps Jun 2 730–1095
Honeydew Jun 2 Aug 25 – Oct 6 80–110
Jostaberry Jun 2 730–1095
Lingonberries Jun 2 730–1095
Medlar Jun 2 1095–1825
Mulberries Jun 2 730–1825
Persimmon Jun 2 1095–2555
Raspberries Jun 2 365–730
Serviceberries Jun 2 730–1095
Strawberries Jun 2 Sep 1 – Oct 27 90–365

🌿 Herbs to Grow in Fayette County

32 herbs that grow well in Zone 4b with planting dates for Fayette County.

Show all 32 herbs with planting dates
Plant Start Indoors Direct Sow Transplant Harvest Days to Maturity
Angelica Mar 24 Apr 28 Apr 28 365–730
Anise Mar 24 Apr 28 Apr 28 Jul 28 – Sep 22 90–120
Basil Mar 10 May 12 May 26 Jul 21 – Sep 22 50–75
Bee Balm May 12 Aug 11 – Oct 6 90–120
Borage Mar 24 Apr 28 Apr 28 Jun 23 – Aug 11 50–60
Caraway Mar 24 Apr 28 Apr 28 365–450
Catnip May 12 Jul 14 – Sep 15 60–80
Chamomile Mar 24 Apr 28 Apr 28 Jun 30 – Sep 8 60–90
Chervil Mar 24 Apr 28 Apr 28 Jun 9 – Aug 11 40–60
Chives May 12 Jul 14 – Sep 22 60–90
Cilantro Mar 24 Apr 28 Apr 28 Jun 9 – Aug 11 40–60
Comfrey May 12 Jul 14 – Sep 22 60–90
Dill Mar 24 Apr 28 Apr 28 Jun 9 – Aug 11 40–60
Echinacea May 12 Sep 15 – Oct 6 120–180
Fennel (herb) Mar 24 Apr 28 Apr 28 Jun 30 – Sep 8 60–90
Garlic Chives May 12 Jul 14 – Sep 22 60–90
Horehound May 12 Jul 28 – Sep 22 75–90
Hyssop May 12 Jul 21 – Sep 22 70–90
Lemon Balm May 12 Jul 14 – Sep 1 60–70
Lovage May 12 Jul 21 – Sep 22 70–90
Mint May 12 Jul 14 – Sep 22 60–90
Oregano May 12 Jul 14 – Sep 22 60–90
Parsley Mar 24 Apr 28 Apr 28 Jun 30 – Sep 1 60–80
Rue May 12 Jul 21 – Sep 22 70–90
Sage May 12 Jul 28 – Sep 22 75–90
Savory May 12 Jul 7 – Sep 1 50–70
Sorrel Mar 24 Apr 28 Apr 28 Jun 9 – Aug 11 40–60
Tarragon May 12 Jul 14 – Sep 22 60–90
Thai Basil Mar 10 May 12 May 26 Jul 21 – Sep 22 50–75
Thyme May 12 Jul 21 – Sep 22 70–90
Valerian May 12 Sep 15 – Oct 6 120–180
Yarrow May 12 Aug 11 – Oct 6 90–120

Monthly Planting Guide for Fayette County

Gardening Guides & Resources

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

Frequently Asked Questions

What planting zone is Fayette County, IA?

Fayette County is in USDA Hardiness Zone 4b. 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 Fayette County, IA?

Based on 31 years of NOAA weather station data, the median last spring frost in Fayette County falls around May 5. In 8 out of 10 years, last frost lands between April 22 and May 20 — a 28-day window of variability. Use May 20 as your conservative safe-to-plant date for frost-sensitive crops.

When is the first fall frost in Fayette County, IA?

The median first fall frost in Fayette County arrives around October 5. In cold years it can arrive as early as September 20; in mild years as late as October 15. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.

How long is the growing season in Fayette County?

Fayette County has a frost-free growing season of approximately 153 days. This is enough time for most warm-season crops including tomatoes, peppers, and squash with proper timing. Climate records show the growing season is trending shorter by about 0.9 days per decade.

What is the soil like in Fayette County for gardening?

Fayette County has predominantly Silt Loam soil with a pH range of 6.2–6.8 and Moderately Well Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.

What is grown commercially in Fayette County?

Fayette County has commercial agriculture that includes Corn, Soybeans, Hay, Oats, Hogs. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.

Is Fayette County a good location for home gardening?

Fayette County scores 71/100 (Good) on our Microclimate Index, which combines frost reliability, drought pressure, soil challenge, elevation risk, and long-term climate trend. This is an above-average location for home gardening with relatively predictable growing conditions.

🌱

Plan Your Garden with Confidence

Get our free Garden Planner — designed to help Fayette County gardeners in Zone 4b organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

Free download. Plan your entire garden season in minutes.

Level Up Your Garden

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