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Hot Springs County, WY — Planting Guide

Hot Springs County, Wyoming Zone 4b May

May to-do list for Hot Springs County, Wyoming

Your garden in Hot Springs County, Wyoming is working on a schedule, even when you're not. Here's where you should be this May.

Avg. last frost May 11
Avg. first frost October 2
Soil temp (4") 29°F
Watering High
Pest pressure Low
Daylight 14.5 hrs
  1. Get kale, lettuce, and angelica in the ground

    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.

  2. Put basil, carrots, and cucumber seeds straight in the ground

    Succession planting is the secret here. Put in a row now, another in 2 weeks, a third in 4.

  3. Bring in the cress and microgreens

    Check every 1–2 days. Many of these get tough or go to seed if you wait too long.

A few tasks this May that'll pay off in June
  • Transplants going out: basil, cucumber, and peppers
  • Starting indoors: cucumber, kale, and lettuce
  • First harvests: lettuce, radish, and arugula

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Hot Springs County is in USDA Zone 4b. The average last spring frost is May 11 and the first fall frost is October 2, giving you a growing season of approximately 144 days.

At an elevation of 8,162 ft, Hot Springs County receives approximately 21.9 in of rainfall annually. Summer highs average 83°F with winter lows around 8°F. The predominant soil type is Loam.

Based on 31 years of NOAA climate station data, the last frost date here varies by 26 days year to year — ranging from April 26 in warm years to May 22 in cold years. The growing season is trending longer by about 2.03 days per decade. Hot Springs County scores 34/100 (Challenging) on the Microclimate Index.

🌡️ Zone

4b (°F to °F min)

❄️ Last Frost

May 11

🍂 First Frost

October 2

📅 Growing Season

144 days

⛰️ Elevation

8,162 ft

🌧️ Annual Rainfall

21.9 in

Hot Springs County, WY Short season
144 days
Last Spring Frost May 11
144 growing days
First Fall Frost October 2

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 1.4" Feb 1.2" Mar 2" +2.3" Apr 2" +1.8" May 2.5" +2.9" Jun 1.4" +2.1" Jul 2.2" +1.9" Aug 2.4" +2.5" Sep 1.8" +2.2" Oct 2.1" Nov 1.7" Dec 1.2"
Rainfall sufficient Supplemental water needed Heavy watering required - - - 1"/week garden need
View detailed monthly data
MonthAvg RainfallRainy DaysExtra Water NeededWatering Effort
Jan 1.4 in 6 days None
Feb 1.2 in 5 days None
Mar 2 in 7 days None
Apr 2 in 6 days 2.3 in High
May 2.5 in 8 days 1.8 in High
Jun 1.4 in 5 days 2.9 in High
Jul 2.2 in 5 days 2.1 in High
Aug 2.4 in 5 days 1.9 in High
Sep 1.8 in 6 days 2.5 in High
Oct 2.1 in 6 days 2.2 in High
Nov 1.7 in 5 days None
Dec 1.2 in 6 days None

Annual total: 21.9 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.

Hot Springs County Soil Profile

Soil Type

Loam

Soil pH

6.3-7.8

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 11 → Oct 2 144 frost-free days Protect crops frost returns Apr May Jun Jul Aug Sep Oct Nov Safe: May 22 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 22 Oct 15 146 days
Cautious May 13 Oct 8 148 days
Average year May 11 Oct 2 144 days
Optimistic May 6 Sep 24 141 days
Aggressive (risky) Apr 26 Sep 17 144 days
📊
How predictable are frost dates here?

Not very — frost dates can vary by ±26 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 days per decade). Spring is arriving earlier than it used to. Good news for gardeners.

Gardening Difficulty Score

34 Challenging
Frost Timing Risk
10.0/10
Drought Risk
7.5/10
Soil Difficulty
1.0/10
Altitude Challenge
10.0/10
Climate Shift
8.1/10
Rainfall Challenge
3.2/10

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

Zone 4b Frost Countdown
--
Loading...
Last Frost: May 11 First Frost: Oct 2

Local Gardening Help in Hot Springs 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 Hot Springs County's climate and soil.

County Extension Office

Hot Springs 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.

Find Master Gardeners in WY →

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 Hot Springs County

Soil testing High-altitude gardening Pest identification
Finding local nurseries & garden centers in Hot Springs County

Why Buy Local

Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Hot Springs 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 Hot Springs County WY" or "garden center Hot Springs 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 Hot Springs County WY" or check your extension office and local parks department. Facebook groups like "Hot Springs 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
After Spinach (harvest ends Aug 17) 46 days until frost
After Chard (harvest ends Aug 24) 39 days until frost
After Kale (harvest ends Aug 31) 32 days until frost
After Peas (harvest ends Aug 31) 32 days until frost
After Snow Peas (harvest ends Aug 31) 32 days until frost
After Chicory (harvest ends Aug 24) 39 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

15.2 hours

Summer solstice daylight

Shortest Day

8.8 hours

Winter solstice daylight

Peak Sun Hours

10.8 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 7h 10h 14h 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 9.1 hr 4.9 hr Short day
February 10.3 hr 5.8 hr Short day
March 11.6 hr 6.8 hr Short day
April 13.2 hr 7.5 hr Neutral
May 14.5 hr 9 hr Long day
June 15.2 hr 10.8 hr Long day
July 15 hr 10 hr Long day
August 13.8 hr 9 hr Neutral
September 12.3 hr 8.5 hr Neutral
October 10.8 hr 7.2 hr Short day
November 9.4 hr 5.3 hr Short day
December 8.8 hr 5 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

Apr

Microbial activity peaks when soil is warm.

Active Composting

0 months

Short season — insulate pile or use indoor vermicomposting.

15° 30° 45° 60° 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 -12°F -2°F ❄️ Dormant ~36 weeks
Feb -10°F -3°F ❄️ Dormant ~36 weeks
Mar 1°F 3°F ❄️ Dormant ~36 weeks
Apr 14°F 13°F ❄️ Dormant ~36 weeks
May 29°F 26°F ❄️ Dormant ~36 weeks
Jun 39°F 36°F ❄️ Dormant ~36 weeks
Jul 49°F 41°F 🐢 Slow ~24 weeks
Aug 49°F 42°F 🐢 Slow ~24 weeks
Sep 41°F 40°F 🐢 Slow ~24 weeks
Oct 29°F 30°F ❄️ Dormant ~36 weeks
Nov 14°F 17°F ❄️ Dormant ~36 weeks
Dec -3°F 5°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 Hot Springs County

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

Insect Pest Pressure

4.7 / 10

Moderate — common pests appear but manageable with monitoring.

Disease Risk

1.8 / 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
Cabbage worms Low Jun, Jul, Aug
Colorado potato beetle Moderate Jun, Jul
Flea beetles Low 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 Hot Springs 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 15 Jul 24 Rapid growth, attracts pollinators, suppresses weeds
White clover Apr 16 Jul 24 ✓ 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 27 Sep 4 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 13 Apr 27 Deep taproot breaks compaction, excellent for clay soils
Hairy vetch Jul 9 Apr 20 ✓ Yes Excellent nitrogen fixer, good for depleted soils
Oats Sep 6 Apr 20 Quick biomass, winterkills in cold zones — no spring tillage needed
Winter rye Jul 1 Apr 20 Suppresses weeds, prevents erosion, breaks up compacted soil
Winter wheat Jun 27 Apr 20 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: 14 mph   Summer: 11 mph

Fall: 11 mph   Winter: 14 mph

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

Windbreak Benefit

7/10

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 1,477 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

10,914 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 1,750 gal tank.

Legal Status

Unrestricted

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

Best Collection Months

May, Jul, Aug, Oct

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

Months to Draw From Storage

Feb, Jun, 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 21.9 inches of rain per year
  • A 1,000 sq ft roof can collect roughly 10,914 gallons annually
  • Rainwater harvesting is fully legal in your state
  • Stock up on stored water before your dry season (Feb, Jun, Dec)
  • Use a first-flush diverter to keep roof debris out of your collection

Soil & Growing Conditions in Hot Springs County

Soil Type

Loam

Soil pH 6.3–7.8 · Excessively 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

144-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 Hot Springs County

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

Show all 96 vegetables with planting dates
Plant Start Indoors Direct Sow Transplant Harvest Days to Maturity
Acorn Squash Mar 30 May 25 Jun 1 Aug 24 – Sep 28 80–100
Amaranth Mar 9 May 25 Jun 1 Aug 31 – Oct 19 90–120
Arugula Mar 30 May 4 May 11 Jun 15 – Aug 17 30–50
Asparagus May 25 730–1095
Beets May 4 Jun 29 – Jul 27 50–70
Belgian Endive Mar 30 May 4 May 11 Aug 31 – Oct 5 110–150
Black Beans May 25 Aug 24 – Oct 12 90–120
Bok Choy Mar 30 May 4 May 11 Jun 22 – Jul 27 40–60
Broccoli Mar 30 May 4 May 11 Jul 13 – Aug 24 60–90
Broccoli Rabe Mar 30 May 4 May 11 Jun 22 – Jul 27 40–60
Brussels Sprouts Mar 30 May 4 May 11 Aug 10 – Oct 5 90–130
Butternut Squash Mar 30 May 25 Jun 1 Aug 31 – Oct 5 85–110
Cabbage Mar 30 May 4 May 11 Jul 13 – Sep 7 60–100
Carrots May 4 Jul 6 – Aug 10 60–80
Cauliflower Mar 30 May 4 May 11 Jul 6 – Sep 7 55–100
Celeriac Mar 30 May 4 May 11 Aug 24 – Sep 28 100–120
Celery Mar 30 May 4 May 11 Aug 3 – Sep 28 80–120
Celtuce Mar 30 May 4 May 11 Jul 13 – Aug 24 60–90
Chard Mar 30 May 4 May 11 Jul 6 – Aug 24 50–60
Chickpeas Mar 30 May 4 May 11 Aug 3 – Sep 14 80–110
Chicory Mar 30 May 4 May 11 Jul 13 – Aug 24 60–85
Chinese Cabbage Mar 30 May 4 May 11 Jul 6 – Aug 3 50–70
Christmas Lima Beans Mar 9 May 25 Jun 1 Aug 24 – Sep 28 80–100
Collard Greens Mar 30 May 4 May 11 Jul 6 – Sep 7 55–75
Corn May 25 Jul 27 – Sep 21 60–100
Cress Mar 30 May 4 May 11 May 25 – Jun 15 14–21
Crookneck Squash Mar 30 May 25 Jun 1 Jul 20 – Aug 17 45–60
Crosne May 4 Oct 5 – Sep 28 150–200
Cucumber Mar 30 May 25 Jun 1 Jul 27 – Sep 21 50–70
Daikon May 4 Jun 29 – Jul 27 50–70
Delicata Squash Mar 30 May 25 Jun 1 Aug 24 – Sep 28 80–100
Edamame May 25 Aug 10 – Sep 21 75–100
Endive Mar 30 May 4 May 11 Jun 29 – Aug 3 45–65
Escarole Mar 30 May 4 May 11 Jul 6 – Aug 3 50–70
Fava Beans Mar 30 May 4 May 11 Jul 27 – Sep 7 75–100
Fennel Mar 9 May 25 Jun 1 Aug 3 – Sep 14 60–90
Garlic 90–240
Green Beans May 25 Jul 20 – Sep 14 50–65
Horseradish May 25 Sep 28 – Oct 19 120–180
Hubbard Squash Mar 30 May 25 Jun 1 Sep 14 – Oct 19 100–120
Kabocha Mar 30 May 25 Jun 1 Aug 31 – Sep 28 85–100
Kai Lan Mar 30 May 4 May 11 Jun 29 – Jul 27 45–60
Kale Mar 30 May 4 May 11 Jul 6 – Aug 31 50–70
Kidney Beans May 25 Aug 24 – Sep 28 85–110
Kohlrabi Mar 30 May 4 May 11 Jun 29 – Aug 3 45–65
Komatsuna Mar 30 May 4 May 11 Jun 15 – Jul 20 35–50
Leeks Mar 30 May 4 May 11 Aug 10 – Oct 5 90–150
Lentils Mar 30 May 4 May 11 Aug 3 – Sep 14 80–110
Lettuce Mar 30 May 4 May 11 Jun 15 – Aug 24 30–60
Lima Beans May 25 Jul 27 – Sep 7 60–90
Mache Mar 30 May 4 May 11 Jun 22 – Jul 27 40–60
Melon Mar 30 May 25 Jun 1 Aug 10 – Sep 28 70–100
Microgreens Mar 30 May 4 May 11 May 18 – Jun 15 7–21
Mitsuba Mar 30 May 4 May 4 Jun 29 – Aug 24 50–70
Mizuna Mar 30 May 4 May 11 Jun 15 – Jul 13 30–45
Mustard Greens Mar 30 May 4 May 11 Jun 15 – Aug 17 30–50
Napa Cabbage Mar 30 May 4 May 11 Jul 6 – Aug 10 55–75
Onion Mar 30 May 4 May 11 Aug 10 – Sep 28 90–120
Pac Choi Mar 30 May 4 May 11 Jun 22 – Jul 20 40–55
Parsnip May 4 Aug 17 – Sep 28 100–130
Patty Pan Squash Mar 30 May 25 Jun 1 Jul 20 – Aug 17 45–60
Peas Mar 30 May 4 May 11 Jul 6 – Aug 31 55–70
Peppers Feb 23 May 25 Jun 1 Aug 3 – Oct 12 60–90
Pole Beans Mar 9 May 25 Jun 1 Jul 27 – Sep 21 55–70
Potatoes Mar 9 May 25 Jun 1 Aug 10 – Oct 19 70–120
Pumpkin Mar 30 May 25 Jun 1 Aug 31 – Oct 19 85–120
Purslane Mar 30 May 4 May 11 Jun 22 – Jul 27 40–60
Radicchio Mar 30 May 4 May 11 Jul 13 – Aug 17 60–80
Radish May 4 Jun 1 – Jun 22 22–35
Rhubarb Jun 8 365–730
Romanesco Mar 30 May 4 May 11 Jul 27 – Sep 7 75–100
Rutabaga May 4 Jul 27 – Aug 31 80–100
Salsify May 4 Aug 17 – Sep 28 100–130
Savoy Cabbage Mar 30 May 4 May 11 Jul 20 – Sep 14 70–110
Scallions Mar 30 May 4 May 11 Jul 6 – Aug 3 50–70
Scarlet Runner Beans Mar 9 May 25 Jun 1 Aug 3 – Sep 7 60–80
Shallot Mar 30 May 4 May 11 Aug 10 – Sep 28 90–120
Shiso Mar 16 May 18 Jun 1 Jul 27 – Sep 21 50–70
Snap Peas Mar 9 May 25 Jun 1 Jul 27 – Sep 21 55–70
Snow Peas Mar 30 May 4 May 11 Jul 6 – Aug 31 50–65
Soybeans May 25 Aug 17 – Oct 12 80–120
Spaghetti Squash Mar 30 May 25 Jun 1 Aug 31 – Sep 28 85–100
Spinach Mar 30 May 4 May 11 Jun 15 – Aug 17 35–50
Squash (Summer) Mar 30 May 25 Jun 1 Jul 20 – Sep 21 45–65
Squash (Winter) Mar 30 May 25 Jun 1 Aug 24 – Oct 19 80–120
Sunchoke May 25 Sep 14 – Oct 19 110–150
Sunflower Mar 9 May 25 Jun 1 Aug 10 – Sep 28 70–100
Sweet Corn May 25 Jul 27 – Sep 7 60–90
Tatsoi Mar 30 May 4 May 11 Jun 15 – Jul 20 35–50
Tomatillo Mar 9 May 25 Jun 1 Aug 3 – Oct 12 60–85
Tomatoes Mar 9 May 25 Jun 1 Aug 3 – Oct 12 60–85
Turnip May 4 Jun 15 – Jul 20 40–60
Watercress Mar 30 May 4 May 11 Jun 22 – Jul 27 40–60
Watermelon Mar 30 May 25 Jun 1 Aug 10 – Sep 28 70–100
Wax Beans May 25 Jul 20 – Sep 14 50–65
Zucchini Mar 30 May 25 Jun 1 Jul 20 – Sep 14 45–60

🍓 Fruits to Grow in Hot Springs County

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

Show all 22 fruits with planting dates
Plant Start Indoors Direct Sow Transplant Harvest Days to Maturity
Alpine Strawberries Jun 8 Sep 7 – Nov 2 90–180
Aronia Jun 8 730–1095
Blueberries Jun 8 730–1095
Cantaloupe Jun 8 Aug 17 – Sep 21 70–90
Cranberries Jun 8 730–1095
Currants Jun 8 730–1095
Elderberries Jun 8 730–1095
Goji Berries Jun 8 730–1095
Gooseberries Jun 8 730–1095
Grapes Jun 8 730–1095
Ground Cherry Jun 8 Aug 17 – Oct 12 65–80
Hardy Kiwi Jun 8 1095–1825
Haskaps Jun 8 730–1095
Honeydew Jun 8 Aug 31 – Oct 12 80–110
Jostaberry Jun 8 730–1095
Lingonberries Jun 8 730–1095
Medlar Jun 8 1095–1825
Mulberries Jun 8 730–1825
Persimmon Jun 8 1095–2555
Raspberries Jun 8 365–730
Serviceberries Jun 8 730–1095
Strawberries Jun 8 Sep 7 – Nov 2 90–365

🌿 Herbs to Grow in Hot Springs County

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

Show all 32 herbs with planting dates
Plant Start Indoors Direct Sow Transplant Harvest Days to Maturity
Angelica Mar 30 May 4 May 4 365–730
Anise Mar 30 May 4 May 4 Aug 3 – Sep 28 90–120
Basil Mar 16 May 18 Jun 1 Jul 27 – Sep 28 50–75
Bee Balm May 18 Aug 17 – Oct 12 90–120
Borage Mar 30 May 4 May 4 Jun 29 – Aug 17 50–60
Caraway Mar 30 May 4 May 4 365–450
Catnip May 18 Jul 20 – Sep 21 60–80
Chamomile Mar 30 May 4 May 4 Jul 6 – Sep 14 60–90
Chervil Mar 30 May 4 May 4 Jun 15 – Aug 17 40–60
Chives May 18 Jul 20 – Sep 28 60–90
Cilantro Mar 30 May 4 May 4 Jun 15 – Aug 17 40–60
Comfrey May 18 Jul 20 – Sep 28 60–90
Dill Mar 30 May 4 May 4 Jun 15 – Aug 17 40–60
Echinacea May 18 Sep 21 – Oct 12 120–180
Fennel (herb) Mar 30 May 4 May 4 Jul 6 – Sep 14 60–90
Garlic Chives May 18 Jul 20 – Sep 28 60–90
Horehound May 18 Aug 3 – Sep 28 75–90
Hyssop May 18 Jul 27 – Sep 28 70–90
Lemon Balm May 18 Jul 20 – Sep 7 60–70
Lovage May 18 Jul 27 – Sep 28 70–90
Mint May 18 Jul 20 – Sep 28 60–90
Oregano May 18 Jul 20 – Sep 28 60–90
Parsley Mar 30 May 4 May 4 Jul 6 – Sep 7 60–80
Rue May 18 Jul 27 – Sep 28 70–90
Sage May 18 Aug 3 – Sep 28 75–90
Savory May 18 Jul 13 – Sep 7 50–70
Sorrel Mar 30 May 4 May 4 Jun 15 – Aug 17 40–60
Tarragon May 18 Jul 20 – Sep 28 60–90
Thai Basil Mar 16 May 18 Jun 1 Jul 27 – Sep 28 50–75
Thyme May 18 Jul 27 – Sep 28 70–90
Valerian May 18 Sep 21 – Oct 12 120–180
Yarrow May 18 Aug 17 – Oct 12 90–120
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Monthly Planting Guide for Hot Springs County

Gardening Guides & Resources

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

Frequently Asked Questions

What planting zone is Hot Springs County, WY?

Hot Springs 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 Hot Springs County, WY?

Based on 31 years of NOAA weather station data, the median last spring frost in Hot Springs County falls around May 11. In 8 out of 10 years, last frost lands between April 26 and May 22 — a 26-day window of variability. Use May 22 as your conservative safe-to-plant date for frost-sensitive crops.

When is the first fall frost in Hot Springs County, WY?

The median first fall frost in Hot Springs County arrives around October 2. In cold years it can arrive as early as September 17; 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 Hot Springs County?

Hot Springs County has a frost-free growing season of approximately 144 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 2.03 days per decade.

What is the soil like in Hot Springs County for gardening?

Hot Springs County has predominantly Loam soil with a pH range of 6.3–7.8 and Excessively Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.

What is grown commercially in Hot Springs County?

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

Is Hot Springs County a good location for home gardening?

Hot Springs County scores 34/100 (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 Hot Springs County Garden Planner — Free

A 24-page printable planner built for Hot Springs County (Zone 4b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

Instant PDF download. No spam, unsubscribe any time.

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  • Bonus tools: troubleshooting chart, safety guide, monitoring log
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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 Hot Springs 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.