Fremont County, WY — Planting Guide
June to-do list for Fremont County, Wyoming
Your Fremont County, Wyoming garden is entering a new phase. Here's what's on the schedule for June and why each task matters now.
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Move alpine strawberries, aronia, and blackberries into the garden
Plant tomatoes deep — bury the stem up to the first true leaves to grow extra roots. Everything else goes in at the same depth it grew in the tray.
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Indoor seed-starting week for cucumber, kale, and lettuce
Label every cell. You will absolutely forget which is which otherwise.
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Collect lettuce, radish, and anemones at their peak
Don't tug. Use scissors or pruners for clean cuts — torn stems invite disease.
July will be here before you know it — start on
- Starting indoors: basil, peppers, and pole beans
- First harvests: basil, carrots, and cucumber
- Fall sowing: carrots, kale, and lettuce
Fremont County is in USDA Zone 5a. The average last spring frost is May 15 and the first fall frost is September 21, giving you a growing season of approximately 129 days.
At an elevation of 6,059 ft, Fremont County receives approximately 14.8 in of rainfall annually. Summer highs average 80°F with winter lows around 6°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 shorter by about 2.97 days per decade. Fremont County scores 29/100 (Challenging) on the Microclimate Index.
🌡️ Zone
5a (-20°F to -15°F min)
❄️ Last Frost
May 15
🍂 First Frost
September 21
📅 Growing Season
129 days
⛰️ Elevation
6,059 ft
🌧️ Annual Rainfall
14.8 in
Monthly Watering Calendar for Fremont County
When you'll need to water your garden — based on average monthly rainfall vs. the ~1 inch/week most gardens need.
Quick context: In humid climates, watering is usually about timing (morning, not evening, to prevent disease) more than volume. In dry climates, it's about depth (water deep, less often) more than frequency. Fremont County's 15" annual tells you which side you're on.
View detailed monthly data
| Month | Avg Rainfall | Rainy Days | Extra Water Needed | Watering Effort |
|---|---|---|---|---|
| Jan | 1.1 in | 6 days | — | None |
| Feb | 1 in | 5 days | — | None |
| Mar | 1.4 in | 8 days | — | None |
| Apr | 1.3 in | 8 days | 3 in | High |
| May | 1.8 in | 7 days | 2.5 in | High |
| Jun | 1.2 in | 5 days | 3.1 in | Critical |
| Jul | 1.2 in | 5 days | 3.1 in | Critical |
| Aug | 1.4 in | 5 days | 2.9 in | High |
| Sep | 1.3 in | 5 days | 3 in | High |
| Oct | 1.2 in | 6 days | 3.1 in | Critical |
| Nov | 1.2 in | 6 days | — | None |
| Dec | 0.7 in | 7 days | — | None |
Annual total: 14.8 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.
Fremont County Soil Profile
Soil Type
Loam
Soil pH
6.7-7.8
Drainage
Well Drained
Frost Risk Probability
Based on 31 years of NOAA weather station data from 3 stations
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 8 | 120 days |
| Cautious | May 23 | Oct 1 | 131 days |
| Average year | May 15 | Sep 21 | 129 days |
| Optimistic | May 11 | Sep 17 | 129 days |
| Aggressive (risky) | May 1 | Sep 6 | 128 days |
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.
Yes — growing seasons are getting shorter here (about 3 days per decade). Use the "Conservative" dates and choose fast-maturing varieties.
Gardening Difficulty Score
Fremont County has challenging growing conditions. Season extension and careful variety selection are essential.
Local Gardening Help in Fremont 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 Fremont County's climate and soil.
County Extension Office
Fremont County University of Wyoming Extension Extension Office
Phone: 307-766-5124
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.
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.
Services Available in Fremont County
Finding local nurseries & garden centers in Fremont County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Fremont 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 Fremont County WY" or "garden center Fremont 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 Fremont County WY" or check your extension office and local parks department. Facebook groups like "Fremont County Gardeners" or "Wyoming 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
Sunlight & Day Length in Fremont County
Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.
The practical takeaway: A 14-hour day in June produces dramatically more photosynthesis than a 10-hour day in November. Fremont County's seasonal swing determines which crops can pack growth into spring vs. limp through fall.
Longest Day
15.2 hours
Summer solstice daylight
Shortest Day
8.8 hours
Winter solstice daylight
Peak Sun Hours
11.3 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.
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
| Month | Daylight Hours | Peak Sun Hours | Day Length |
|---|---|---|---|
| January | 9.2 hr | 5.2 hr | Short day |
| February | 10.3 hr | 5.8 hr | Short day |
| March | 11.6 hr | 7.2 hr | Short day |
| April | 13.2 hr | 7.6 hr | Neutral |
| May | 14.5 hr | 9.2 hr | Long day |
| June | 15.2 hr | 11.3 hr | Long day |
| July | 14.9 hr | 9.9 hr | Long day |
| August | 13.8 hr | 9.6 hr | Neutral |
| September | 12.3 hr | 8.8 hr | Neutral |
| October | 10.8 hr | 6.8 hr | Short day |
| November | 9.5 hr | 5.7 hr | Short day |
| December | 8.8 hr | 5.1 hr | Short day |
Peak sun hours factor in typical cloud cover — use these for solar panel and shade-planning calculations.
Soil Temperature & Composting in Fremont County
Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.
What this means for you: Soil temperature predicts plant emergence better than calendar dates. Fremont 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
2 months
Short season — insulate pile or use indoor vermicomposting.
View detailed monthly data
| Month | Soil 4" Deep | Soil 8" Deep | Compost Activity | Time to Finish |
|---|---|---|---|---|
| Jan | -2°F | 5°F | ❄️ Dormant | ~36 weeks |
| Feb | 1°F | 5°F | ❄️ Dormant | ~36 weeks |
| Mar | 9°F | 12°F | ❄️ Dormant | ~36 weeks |
| Apr | 22°F | 23°F | ❄️ Dormant | ~36 weeks |
| May | 38°F | 32°F | ❄️ Dormant | ~36 weeks |
| Jun | 49°F | 43°F | 🐢 Slow | ~24 weeks |
| Jul | 54°F | 48°F | ♻️ Active | ~14 weeks |
| Aug | 55°F | 50°F | ♻️ Active | ~14 weeks |
| Sep | 49°F | 46°F | 🐢 Slow | ~24 weeks |
| Oct | 34°F | 38°F | ❄️ Dormant | ~36 weeks |
| Nov | 22°F | 27°F | ❄️ Dormant | ~36 weeks |
| Dec | 3°F | 15°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 Fremont County
Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.
Why this matters: Pest score isn't pass/fail. It's a planning input. Higher scores mean: more compost (resilient plants), wider spacing (air circulation), resistant varieties (built-in defense), and inspection (catch issues at egg stage).
Insect Pest Pressure
Moderate — common pests appear but manageable with monitoring.
Disease Risk
Low disease risk — dry conditions reduce fungal problems.
Seasonal Risk
View 5 common pests in your area
| Pest | Risk Level | Peak Months |
|---|---|---|
| Aphids | Moderate | May, Jun, Jul, Aug |
| Cabbage worms | Low | Jun, Jul, Aug |
| Colorado potato beetle | Moderate | Jun, Jul |
| Flea beetles | Moderate | May, Jun, Jul |
| Slugs | Low | May, Jun, Jul, Aug, Sep |
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 Fremont County
Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with planting dates calibrated for your area.
What this means for you: In Fremont County, cover crops also crowd out weeds. The denser the cover, the less weed pressure next season. Pays for itself in saved weeding time.
Spring Cover Crops (2 options) — Build soil before the main growing season
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Buckwheat | May 24 | Jul 13 | — | Rapid growth, attracts pollinators, suppresses weeds |
| White clover | Apr 15 | Jul 13 | ✓ 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 28 | Aug 31 | — | 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 | Jul 30 | Apr 24 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Jul 6 | Apr 24 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Aug 22 | Apr 24 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Jun 25 | May 1 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Jun 25 | May 1 | — | Erosion control, weed suppression, good biomass |
Wind & Microclimate in Fremont County
For new gardeners: Plants lose water through tiny leaf pores. Wind accelerates that loss dramatically — a 15 mph day can double a calm day's irrigation need. Fremont County's 10.5 mph background wind is something to design around, not against. Windbreaks made of perennial shrubs save more water than any drip system.
Wind dries soil, stresses plants, and affects frost patterns. Understanding your exposure helps with garden placement.
Seasonal Wind Speed
Spring: 16 mph Summer: 11 mph
Fall: 13 mph Winter: 15 mph
Prevailing wind: W. Windy area — plant a windbreak hedge on the W side of your garden.
Windbreak Benefit
7.2/10
Strongly recommended — a windbreak (fence, hedge, or row of tall crops like corn or sunflowers) will significantly improve garden yields.
Frost Pocket Risk
High
Hilly terrain with 2,512 ft of elevation range — cold air pools in low spots. Avoid planting frost-sensitive crops in valleys.
Rainwater Harvesting in Fremont County
How much water you can collect, when to collect it, and what size system you need for your garden.
What this means for you: A gravity-fed rain barrel ($75) is the easy entry. A larger cistern ($500-1500) covers a whole growing season. Fremont County's 15" annual rainfall determines whether the larger system is overkill or essential.
Annual Collection
7,376 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 1,000 gal tank.
Legal Status
Unrestricted
Rainwater harvesting is fully legal in your state with no restrictions.
Best Collection Months
Mar, Apr, May, Aug
Highest rainfall months — your barrels will fill up quickly during these months.
Months to Draw From Storage
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 14.8 inches of rain per year
- A 1,000 sq ft roof can collect roughly 7,376 gallons annually
- Rainwater harvesting is fully legal in your state
- 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 Fremont County
Soil Type
Loam
Soil pH 6.7–7.8 · Excessively 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
129-day frost-free season
A short season means indoor starts are critical for warm-season crops. Prioritise cold-hardy, fast-maturing varieties and use row covers to extend autumn harvests.
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.
Recommended for Your Garden
Test your soil pH, nitrogen, phosphorus, and potassium levels before planting.
Get instant, accurate soil pH readings to fine-tune your amendments.
Boost soil fertility and structure with rich, well-aged organic compost.
🥬 Vegetables to Grow in Fremont County
105 vegetables that grow well in Zone 5a with planting dates for Fremont County.
Show all 105 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Acorn Squash | Apr 10 | May 22 | May 29 | — | Aug 21 – Sep 25 | 80–100 |
| Amaranth | Mar 20 | May 22 | May 29 | — | Aug 28 – Oct 16 | 90–120 |
| Arugula | Apr 10 | May 1 | May 15 | Jul 13 | Jun 19 – Aug 21 | 30–50 |
| Asparagus | — | — | May 29 | — | — | 730–1095 |
| Beets | — | May 1 | — | Jul 13 | Jun 26 – Jul 24 | 50–70 |
| Belgian Endive | Apr 10 | May 1 | May 15 | Jul 13 | Sep 4 – Oct 30 | 110–150 |
| Bitter Melon | Mar 20 | May 22 | May 29 | — | Jul 31 – Sep 11 | 60–90 |
| Black Beans | — | May 22 | — | — | Aug 21 – Oct 9 | 90–120 |
| Bok Choy | Apr 10 | May 1 | May 15 | Jul 13 | Jun 26 – Jul 31 | 40–60 |
| Broccoli | Apr 10 | May 1 | May 15 | Jul 13 | Jul 17 – Aug 28 | 60–90 |
| Broccoli Rabe | Apr 10 | May 1 | May 15 | Jul 13 | Jun 26 – Jul 31 | 40–60 |
| Brussels Sprouts | Apr 10 | May 1 | May 15 | Jul 13 | Aug 14 – Oct 9 | 90–130 |
| Butternut Squash | Apr 10 | May 22 | May 29 | — | Aug 28 – Oct 2 | 85–110 |
| Cabbage | Apr 10 | May 1 | May 15 | Jul 13 | Jul 17 – Sep 11 | 60–100 |
| Calabash | Mar 20 | May 22 | May 29 | — | Aug 21 – Oct 16 | 80–120 |
| Carrots | — | May 1 | — | Jul 13 | Jul 3 – Aug 7 | 60–80 |
| Cauliflower | Apr 10 | May 1 | May 15 | Jul 13 | Jul 10 – Sep 11 | 55–100 |
| Celeriac | Apr 10 | May 1 | May 15 | Jul 13 | Aug 28 – Oct 2 | 100–120 |
| Celery | Apr 10 | May 1 | May 15 | Jul 13 | Aug 7 – Oct 2 | 80–120 |
| Celtuce | Apr 10 | May 1 | May 15 | Jul 13 | Jul 17 – Aug 28 | 60–90 |
| Chard | Apr 10 | May 1 | May 15 | Jul 13 | Jul 10 – Aug 28 | 50–60 |
| Chickpeas | Apr 10 | May 1 | May 15 | Jul 13 | Aug 7 – Sep 18 | 80–110 |
| Chicory | Apr 10 | May 1 | May 15 | Jul 13 | Jul 17 – Aug 28 | 60–85 |
| Chinese Cabbage | Apr 10 | May 1 | May 15 | Jul 13 | Jul 10 – Aug 7 | 50–70 |
| Christmas Lima Beans | Mar 20 | May 22 | May 29 | — | Aug 21 – Sep 25 | 80–100 |
| Collard Greens | Apr 10 | May 1 | May 15 | Jul 13 | Jul 10 – Sep 11 | 55–75 |
| Corn | — | May 22 | — | — | Jul 24 – Sep 18 | 60–100 |
| Cowpeas | — | May 22 | — | — | Jul 24 – Sep 4 | 60–90 |
| Cress | Apr 10 | May 1 | May 15 | Jul 13 | May 29 – Jun 19 | 14–21 |
| Crookneck Squash | Apr 10 | May 22 | May 29 | — | Jul 17 – Aug 14 | 45–60 |
| Crosne | — | May 1 | — | Jul 13 | Oct 2 – Oct 16 | 150–200 |
| Cucumber | Apr 10 | May 22 | May 29 | — | Jul 24 – Sep 18 | 50–70 |
| Daikon | — | May 1 | — | Jul 13 | Jun 26 – Jul 24 | 50–70 |
| Delicata Squash | Apr 10 | May 22 | May 29 | — | Aug 21 – Sep 25 | 80–100 |
| Edamame | — | May 22 | — | — | Aug 7 – Sep 18 | 75–100 |
| Eggplant | Mar 6 | May 22 | May 29 | — | Aug 7 – Oct 9 | 65–85 |
| Endive | Apr 10 | May 1 | May 15 | Jul 13 | Jul 3 – Aug 7 | 45–65 |
| Escarole | Apr 10 | May 1 | May 15 | Jul 13 | Jul 10 – Aug 7 | 50–70 |
| Fava Beans | Apr 10 | May 1 | May 15 | Jul 13 | Jul 31 – Sep 11 | 75–100 |
| Fennel | Mar 20 | May 22 | May 29 | — | Jul 31 – Sep 11 | 60–90 |
| Garlic | — | — | — | Aug 10 | Nov 9 – Jan 25 | 90–240 |
| Green Beans | — | May 22 | — | — | Jul 17 – Sep 11 | 50–65 |
| Horseradish | — | — | May 29 | — | Oct 2 – Nov 13 | 120–180 |
| Hot Peppers | Mar 6 | May 22 | May 29 | — | Aug 7 – Nov 13 | 70–120 |
| Hubbard Squash | Apr 10 | May 22 | May 29 | — | Sep 11 – Oct 16 | 100–120 |
| Kabocha | Apr 10 | May 22 | May 29 | — | Aug 28 – Sep 25 | 85–100 |
| Kai Lan | Apr 10 | May 1 | May 15 | Jul 13 | Jul 3 – Jul 31 | 45–60 |
| Kale | Apr 10 | May 1 | May 15 | Jul 13 | Jul 10 – Sep 4 | 50–70 |
| Kidney Beans | — | May 22 | — | — | Aug 21 – Sep 25 | 85–110 |
| Kohlrabi | Apr 10 | May 1 | May 15 | Jul 13 | Jul 3 – Aug 7 | 45–65 |
| Komatsuna | Apr 10 | May 1 | May 15 | Jul 13 | Jun 19 – Jul 24 | 35–50 |
| Leeks | Apr 10 | May 1 | May 15 | Jul 13 | Aug 14 – Oct 30 | 90–150 |
| Lentils | Apr 10 | May 1 | May 15 | Jul 13 | Aug 7 – Sep 18 | 80–110 |
| Lettuce | Apr 10 | May 1 | May 15 | Jul 13 | Jun 19 – Aug 28 | 30–60 |
| Lima Beans | — | May 22 | — | — | Jul 24 – Sep 4 | 60–90 |
| Mache | Apr 10 | May 1 | May 15 | Jul 13 | Jun 26 – Jul 31 | 40–60 |
| Melon | Apr 10 | May 22 | May 29 | — | Aug 7 – Sep 25 | 70–100 |
| Microgreens | Apr 10 | May 1 | May 15 | Jul 13 | May 22 – Jun 19 | 7–21 |
| Mitsuba | Apr 10 | May 1 | May 8 | Jul 13 | Jul 3 – Aug 28 | 50–70 |
| Mizuna | Apr 10 | May 1 | May 15 | Jul 13 | Jun 19 – Jul 17 | 30–45 |
| Mustard Greens | Apr 10 | May 1 | May 15 | Jul 13 | Jun 19 – Aug 21 | 30–50 |
| Napa Cabbage | Apr 10 | May 1 | May 15 | Jul 13 | Jul 10 – Aug 14 | 55–75 |
| New Zealand Spinach | Mar 20 | May 22 | May 29 | — | Jul 24 – Aug 21 | 55–70 |
| Okra | Mar 20 | May 22 | May 29 | — | Jul 24 – Sep 18 | 50–65 |
| Onion | Apr 10 | May 1 | May 15 | Jul 13 | Aug 14 – Oct 2 | 90–120 |
| Pac Choi | Apr 10 | May 1 | May 15 | Jul 13 | Jun 26 – Jul 24 | 40–55 |
| Parsnip | — | May 1 | — | Jul 13 | Aug 14 – Sep 25 | 100–130 |
| Patty Pan Squash | Apr 10 | May 22 | May 29 | — | Jul 17 – Aug 14 | 45–60 |
| Peas | Apr 10 | May 1 | May 15 | Jul 13 | Jul 10 – Sep 4 | 55–70 |
| Peppers | Mar 6 | May 22 | May 29 | — | Jul 31 – Oct 9 | 60–90 |
| Pole Beans | Mar 20 | May 22 | May 29 | — | Jul 24 – Sep 18 | 55–70 |
| Potatoes | Mar 20 | May 22 | May 29 | — | Aug 7 – Oct 16 | 70–120 |
| Pumpkin | Apr 10 | May 22 | May 29 | — | Aug 28 – Oct 16 | 85–120 |
| Purslane | Apr 10 | May 1 | May 15 | Jul 13 | Jun 26 – Jul 31 | 40–60 |
| Radicchio | Apr 10 | May 1 | May 15 | Jul 13 | Jul 17 – Aug 21 | 60–80 |
| Radish | — | May 1 | — | Jul 13 | May 29 – Jun 19 | 22–35 |
| Rhubarb | — | — | Jun 5 | — | — | 365–730 |
| Romanesco | Apr 10 | May 1 | May 15 | Jul 13 | Jul 31 – Sep 11 | 75–100 |
| Rutabaga | — | May 1 | — | Jul 13 | Jul 24 – Aug 28 | 80–100 |
| Salsify | — | May 1 | — | Jul 13 | Aug 14 – Sep 25 | 100–130 |
| Savoy Cabbage | Apr 10 | May 1 | May 15 | Jul 13 | Jul 24 – Sep 18 | 70–110 |
| Scallions | Apr 10 | May 1 | May 15 | Jul 13 | Jul 10 – Aug 7 | 50–70 |
| Scarlet Runner Beans | Mar 20 | May 22 | May 29 | — | Jul 31 – Sep 4 | 60–80 |
| Shallot | Apr 10 | May 1 | May 15 | Jul 13 | Aug 14 – Oct 2 | 90–120 |
| Shiso | Mar 27 | May 22 | May 29 | — | Jul 24 – Sep 18 | 50–70 |
| Snap Peas | Mar 20 | May 22 | May 29 | — | Jul 24 – Sep 18 | 55–70 |
| Snow Peas | Apr 10 | May 1 | May 15 | Jul 13 | Jul 10 – Sep 4 | 50–65 |
| Soybeans | — | May 22 | — | — | Aug 14 – Oct 9 | 80–120 |
| Spaghetti Squash | Apr 10 | May 22 | May 29 | — | Aug 28 – Sep 25 | 85–100 |
| Spinach | Apr 10 | May 1 | May 15 | Jul 13 | Jun 19 – Aug 21 | 35–50 |
| Squash (Summer) | Apr 10 | May 22 | May 29 | — | Jul 17 – Sep 18 | 45–65 |
| Squash (Winter) | Apr 10 | May 22 | May 29 | — | Aug 21 – Oct 16 | 80–120 |
| Sunchoke | — | — | May 29 | — | Sep 18 – Nov 13 | 110–150 |
| Sweet Corn | — | May 22 | — | — | Jul 24 – Sep 4 | 60–90 |
| Sweet Potatoes | Mar 20 | May 22 | May 29 | — | Aug 28 – Oct 16 | 90–120 |
| Tatsoi | Apr 10 | May 1 | May 15 | Jul 13 | Jun 19 – Jul 24 | 35–50 |
| Tomatillo | Mar 20 | May 22 | May 29 | — | Jul 31 – Oct 9 | 60–85 |
| Tomatoes | Mar 20 | May 22 | May 29 | — | Jul 31 – Oct 9 | 60–85 |
| Turnip | — | May 1 | — | Jul 13 | Jun 12 – Jul 17 | 40–60 |
| Watercress | Apr 10 | May 1 | May 15 | Jul 13 | Jun 26 – Jul 31 | 40–60 |
| Watermelon | Apr 10 | May 22 | May 29 | — | Aug 7 – Sep 25 | 70–100 |
| Wax Beans | — | May 22 | — | — | Jul 17 – Sep 11 | 50–65 |
| Winter Melon | Mar 20 | May 22 | May 29 | — | Aug 28 – Oct 16 | 90–120 |
| Yard Long Beans | Mar 20 | May 22 | May 29 | — | Jul 24 – Sep 4 | 55–80 |
| Zucchini | Apr 10 | May 22 | May 29 | — | Jul 17 – Sep 11 | 45–60 |
🍓 Fruits to Grow in Fremont County
27 fruits that grow well in Zone 5a with planting dates for Fremont County.
Show all 27 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Alpine Strawberries | — | — | Jun 5 | — | Sep 4 – Nov 20 | 90–180 |
| Aronia | — | — | Jun 5 | — | — | 730–1095 |
| Blackberries | — | — | Jun 5 | — | — | 365–730 |
| Blueberries | — | — | Jun 5 | — | — | 730–1095 |
| Boysenberries | — | — | Jun 5 | — | — | 365–730 |
| Cantaloupe | — | — | Jun 5 | — | Aug 14 – Sep 18 | 70–90 |
| Che Fruit | — | — | Jun 5 | — | — | 1095–1825 |
| Cranberries | — | — | Jun 5 | — | — | 730–1095 |
| Currants | — | — | Jun 5 | — | — | 730–1095 |
| Elderberries | — | — | Jun 5 | — | — | 730–1095 |
| Goji Berries | — | — | Jun 5 | — | — | 730–1095 |
| Gooseberries | — | — | Jun 5 | — | — | 730–1095 |
| Grapes | — | — | Jun 5 | — | — | 730–1095 |
| Ground Cherry | — | — | Jun 5 | — | Aug 14 – Oct 9 | 65–80 |
| Hardy Kiwi | — | — | Jun 5 | — | — | 1095–1825 |
| Haskaps | — | — | Jun 5 | — | — | 730–1095 |
| Honeydew | — | — | Jun 5 | — | Aug 28 – Oct 9 | 80–110 |
| Jostaberry | — | — | Jun 5 | — | — | 730–1095 |
| Lingonberries | — | — | Jun 5 | — | — | 730–1095 |
| Medlar | — | — | Jun 5 | — | — | 1095–1825 |
| Mulberries | — | — | Jun 5 | — | — | 730–1825 |
| Pawpaw | — | — | Jun 5 | — | — | 1095–2555 |
| Persimmon | — | — | Jun 5 | — | — | 1095–2555 |
| Quince | — | — | Jun 5 | — | — | 1095–1825 |
| Raspberries | — | — | Jun 5 | — | — | 365–730 |
| Serviceberries | — | — | Jun 5 | — | — | 730–1095 |
| Strawberries | — | — | Jun 5 | — | Sep 4 – Nov 20 | 90–365 |
🌿 Herbs to Grow in Fremont County
34 herbs that grow well in Zone 5a with planting dates for Fremont County.
Show all 34 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Angelica | Apr 10 | May 1 | May 8 | Jul 13 | — | 365–730 |
| Anise | Apr 10 | May 1 | May 8 | Jul 13 | Aug 7 – Oct 23 | 90–120 |
| Basil | Mar 27 | May 22 | May 29 | — | Jul 24 – Sep 25 | 50–75 |
| Bee Balm | — | — | May 22 | — | Aug 21 – Nov 6 | 90–120 |
| Borage | Apr 10 | May 1 | May 8 | Jul 13 | Jul 3 – Aug 21 | 50–60 |
| Caraway | Apr 10 | May 1 | May 8 | Jul 13 | — | 365–450 |
| Catnip | — | — | May 22 | — | Jul 24 – Sep 25 | 60–80 |
| Chamomile | Apr 10 | May 1 | May 8 | Jul 13 | Jul 10 – Sep 18 | 60–90 |
| Chervil | Apr 10 | May 1 | May 8 | Jul 13 | Jun 19 – Aug 21 | 40–60 |
| Chives | — | — | May 22 | — | Jul 24 – Oct 2 | 60–90 |
| Cilantro | Apr 10 | May 1 | May 8 | Jul 13 | Jun 19 – Aug 21 | 40–60 |
| Comfrey | — | — | May 22 | — | Jul 24 – Oct 2 | 60–90 |
| Cumin | Apr 10 | May 1 | May 8 | Jul 13 | Aug 21 – Oct 23 | 100–120 |
| Dill | Apr 10 | May 1 | May 8 | Jul 13 | Jun 19 – Aug 21 | 40–60 |
| Epazote | Mar 27 | May 22 | May 29 | — | Jul 17 – Sep 11 | 45–60 |
| Fennel (herb) | Apr 10 | May 1 | May 8 | Jul 13 | Jul 10 – Sep 18 | 60–90 |
| Feverfew | — | — | May 22 | — | Aug 21 – Nov 6 | 90–120 |
| Garlic Chives | — | — | May 22 | — | Jul 24 – Oct 2 | 60–90 |
| Horehound | — | — | May 22 | — | Aug 7 – Oct 2 | 75–90 |
| Hyssop | — | — | May 22 | — | Jul 31 – Oct 2 | 70–90 |
| Lemon Balm | — | — | May 22 | — | Jul 24 – Sep 11 | 60–70 |
| Lemon Thyme | — | — | May 22 | — | Jul 31 – Oct 2 | 70–90 |
| Lovage | — | — | May 22 | — | Jul 31 – Oct 2 | 70–90 |
| Mint | — | — | May 22 | — | Jul 24 – Oct 2 | 60–90 |
| Oregano | — | — | May 22 | — | Jul 24 – Oct 2 | 60–90 |
| Parsley | Apr 10 | May 1 | May 8 | Jul 13 | Jul 10 – Sep 11 | 60–80 |
| Rue | — | — | May 22 | — | Jul 31 – Oct 2 | 70–90 |
| Sage | — | — | May 22 | — | Aug 7 – Oct 2 | 75–90 |
| Savory | — | — | May 22 | — | Jul 17 – Sep 11 | 50–70 |
| Sorrel | Apr 10 | May 1 | May 8 | Jul 13 | Jun 19 – Aug 21 | 40–60 |
| Tarragon | — | — | May 22 | — | Jul 24 – Oct 2 | 60–90 |
| Thai Basil | Mar 27 | May 22 | May 29 | — | Jul 24 – Sep 25 | 50–75 |
| Thyme | — | — | May 22 | — | Jul 31 – Oct 2 | 70–90 |
| Valerian | — | — | May 22 | — | Sep 25 – Nov 6 | 120–180 |
🌸 Flowers to Grow in Fremont County
51 flowers that grow well in Zone 5a with planting dates for Fremont County.
Show all 51 flowers with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Bloom | Days to Maturity |
|---|---|---|---|---|---|---|
| Ageratum | Mar 27 | May 22 | May 22 | — | Jul 17 – Oct 9 | 60–75 |
| Alliums | — | — | — | Aug 10 | Sep 14 – Oct 12 | 28–42 |
| Anemones | Apr 17 | — | May 15 | — | Jun 26 – Jul 24 | 90–120 |
| Astilbe | Mar 13 | — | May 29 | — | Aug 14 – Oct 16 | 70–100 |
| Bachelor's Button | Apr 3 | Apr 24 | May 15 | — | Jul 17 – Sep 25 | 60–90 |
| Begonias | Mar 6 | — | May 22 | — | Jul 31 – Oct 23 | 70–90 |
| Black-eyed Susan | Mar 13 | May 15 | May 29 | — | Aug 14 – Nov 13 | 60–80 |
| Bleeding Hearts | Mar 13 | — | May 29 | — | Jul 24 – Sep 4 | 60–90 |
| Calendula | Apr 3 | Apr 24 | May 15 | — | Jul 3 – Sep 25 | 50–70 |
| Celosia | Apr 10 | May 29 | May 29 | — | Jul 31 – Oct 30 | 60–90 |
| Columbine | Mar 13 | May 29 | May 29 | — | Jul 24 – Sep 4 | 70–100 |
| Coreopsis | Mar 13 | May 22 | May 29 | — | Aug 7 – Nov 13 | 60–80 |
| Cosmos | Apr 17 | May 22 | May 22 | — | Jul 31 – Oct 23 | 60–90 |
| Crocus | — | — | — | Aug 10 | Jun 22 – Jul 13 | 10–20 |
| Daffodils | — | — | — | Aug 10 | Jun 29 – Jul 20 | 20–40 |
| Dahlias | Apr 17 | May 22 | May 22 | — | Aug 14 – Nov 6 | 70–120 |
| Daylily | Mar 13 | — | May 29 | — | Aug 21 – Nov 13 | 60–90 |
| Dianthus | Mar 13 | Apr 17 | May 1 | — | Jun 19 – Sep 4 | 60–80 |
| Echinacea (Purple Coneflower) | Mar 13 | May 29 | May 29 | — | Aug 21 – Nov 13 | 70–90 |
| Foxglove | Mar 13 | May 29 | May 29 | — | Jul 24 – Sep 4 | 80–120 |
| Gaillardia (Blanket Flower) | Mar 20 | May 29 | May 29 | — | Aug 7 – Nov 27 | 70–100 |
| Geraniums | Mar 6 | — | May 22 | — | Jul 31 – Oct 23 | 70–100 |
| Gladiolus | — | May 22 | May 22 | — | Aug 14 – Nov 6 | 70–100 |
| Hostas | Mar 6 | — | May 29 | — | Aug 21 – Nov 13 | 60–90 |
| Hyacinths | — | — | — | Aug 10 | Jul 20 – Aug 17 | 14–28 |
| Hydrangeas | Mar 6 | — | May 29 | — | Aug 14 – Oct 30 | 90–150 |
| Impatiens | Mar 20 | — | May 22 | — | Jul 31 – Oct 23 | 60–75 |
| Irises | — | Division | May 29 | — | Jul 24 – Aug 28 | 60–100 |
| Larkspur | — | Apr 17 | — | — | Jun 26 – Aug 21 | 60–90 |
| Lavender | Mar 6 | — | Jun 5 | — | Aug 14 – Sep 25 | 90–120 |
| Lilies | — | Division | May 29 | — | Aug 7 – Oct 30 | 70–120 |
| Lobelia | Mar 6 | — | May 8 | — | Jul 3 – Sep 11 | 70–80 |
| Lupine | Mar 13 | May 29 | May 29 | — | Jul 24 – Sep 4 | 75–100 |
| Marigolds | Apr 3 | May 22 | May 22 | — | Jul 17 – Oct 9 | 50–70 |
| Nasturtium | Apr 17 | May 22 | May 22 | — | Jul 17 – Oct 23 | 55–65 |
| Pansy | Mar 6 | — | May 15 | — | Jul 10 – Sep 4 | 70–90 |
| Peonies | — | Division | May 29 | — | Aug 7 – Sep 18 | 90–120 |
| Petunia | Mar 20 | — | May 22 | — | Jul 31 – Oct 23 | 70–90 |
| Phlox | Mar 13 | May 29 | May 29 | — | Aug 14 – Oct 30 | 80–110 |
| Portulaca | Apr 10 | May 29 | May 29 | — | Jul 17 – Oct 16 | 50–70 |
| Roses | Mar 6 | — | May 29 | — | Aug 14 – Nov 13 | 90–180 |
| Salvia | Mar 13 | — | May 22 | — | Jul 31 – Oct 23 | 70–90 |
| Sedum (Stonecrop) | Mar 13 | — | May 29 | — | Sep 25 – Nov 27 | 60–90 |
| Snapdragon | Mar 6 | May 1 | May 15 | — | Jul 24 – Sep 25 | 70–100 |
| Sunflower | Apr 24 | May 22 | May 22 | — | Aug 14 – Oct 23 | 70–100 |
| Sweet Alyssum | Mar 27 | May 1 | May 15 | — | Jun 26 – Sep 4 | 45–60 |
| Sweet Pea | Apr 3 | Apr 10 | May 15 | — | Jul 31 – Oct 2 | 65–85 |
| Tulips | — | — | — | Aug 10 | Jul 13 – Aug 3 | 15–30 |
| Vinca (Annual) | Feb 27 | — | May 29 | — | Aug 7 – Oct 23 | 70–90 |
| Yarrow | Mar 13 | May 15 | May 29 | — | Aug 7 – Nov 13 | 60–90 |
| Zinnia | Apr 17 | May 22 | May 22 | — | Jul 31 – Oct 23 | 60–70 |
Monthly Planting Guide for Fremont County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Fremont County.
Frequently Asked Questions
What planting zone is Fremont County, WY?
Fremont County is in USDA Hardiness Zone 5a. 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 Fremont County, WY?
Based on 31 years of NOAA weather station data, the median last spring frost in Fremont County falls around May 15. 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 Fremont County, WY?
The median first fall frost in Fremont County arrives around September 21. In cold years it can arrive as early as September 6; in mild years as late as October 8. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Fremont County?
Fremont County has a frost-free growing season of approximately 129 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 shorter by about 2.97 days per decade.
What is the soil like in Fremont County for gardening?
Fremont County has predominantly Loam soil with a pH range of 6.7–7.8 and Excessively Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.
What is grown commercially in Fremont County?
Fremont County has commercial agriculture that includes Hay, Cattle, Wheat, Barley. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is Fremont County a good location for home gardening?
Fremont 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.
Your Fremont County Garden Planner — Free
A 22-page printable planner built for Fremont County (Zone 5a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.
The Gardener's Encyclopedia to Companion Planting
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
- Bonus: square-foot gardening guide + printable seasonal planners
Seed Saving & Storage Guide
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
- Exact temperature + humidity ranges that keep seeds viable
- Bonus: searchable Google Sheets tracker + custom GPT assistant
Composting Guide for Homesteaders
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
- The 7-step hot-compost system from start to finish
- Bonus tools: troubleshooting chart, safety guide, monitoring log