Teton County, ID — Planting Guide
This month in Teton County, Idaho
Each item below is timed to Teton County, Idaho's frost dates and soil temperatures. Skip nothing, stress about nothing.
-
Transplant kale, lettuce, and angelica outside
Frost risk is low now in Teton County, Idaho. If you've been covering beds overnight, you can stop.
-
Seed carrots, kale, and lettuce outdoors
Rake a smooth bed, make a shallow furrow, drop seeds at the spacing on the packet, water gently, walk away.
Before June arrives, get these ready
- Transplants going out: basil, cucumber, and peppers
- Direct-sowing: basil, cucumber, and green beans
- First harvests: radish, cress, and microgreens
Teton County is in USDA Zone 5a. The average last spring frost is May 31 and the first fall frost is September 11, giving you a growing season of approximately 103 days.
At an elevation of 6,709 ft, Teton County receives approximately 15.1 in of rainfall annually. Summer highs average 83°F with winter lows around 9°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 May 9 in warm years to June 21 in cold years. The growing season is trending longer by about 7.82 days per decade. Teton County scores 29/100 (Challenging) on the Microclimate Index.
🌡️ Zone
5a (°F to °F min)
❄️ Last Frost
May 31
🍂 First Frost
September 11
📅 Growing Season
103 days
⛰️ Elevation
6,709 ft
🌧️ Annual Rainfall
15.1 in
Monthly Watering Calendar
When you'll need to water your garden — based on average monthly rainfall vs. the ~1 inch/week most gardens need.
View detailed monthly data
| Month | Avg Rainfall | Rainy Days | Extra Water Needed | Watering Effort |
|---|---|---|---|---|
| Jan | 1.1 in | 8 days | — | None |
| Feb | 1 in | 6 days | — | None |
| Mar | 1.2 in | 8 days | — | None |
| Apr | 1.8 in | 7 days | 2.5 in | High |
| May | 1.9 in | 8 days | 2.4 in | High |
| Jun | 1.1 in | 4 days | 3.2 in | Critical |
| Jul | 1.4 in | 5 days | 2.9 in | High |
| Aug | 1.4 in | 6 days | 2.9 in | High |
| Sep | 1.2 in | 6 days | 3.1 in | Critical |
| Oct | 1.2 in | 5 days | 3.1 in | Critical |
| Nov | 1 in | 5 days | — | None |
| Dec | 1 in | 6 days | — | None |
Annual total: 15.3 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.
Teton County Soil Profile
Soil Type
Loam
Soil pH
6.5-8.4
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 21 | Oct 4 | 105 days |
| Cautious | Jun 12 | Sep 21 | 101 days |
| Average year | May 31 | Sep 11 | 103 days |
| Optimistic | May 21 | Sep 7 | 109 days |
| Aggressive (risky) | May 9 | Aug 30 | 113 days |
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.
Yes — growing seasons are getting longer here (about 7.8 days per decade). Spring is arriving earlier than it used to. Good news for gardeners.
Gardening Difficulty Score
Teton County has challenging growing conditions. Season extension and careful variety selection are essential.
Local Gardening Help in Teton 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 Teton County's climate and soil.
County Extension Office
Teton County University of Idaho Extension Extension Office
Phone: 208-885-6681
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 Teton County
Finding local nurseries & garden centers in Teton County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Teton 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 Teton County ID" or "garden center Teton 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 Teton County ID" or check your extension office and local parks department. Facebook groups like "Teton County Gardeners" or "Idaho 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.
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
8.7 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.
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 | 9.1 hr | 5 hr | Short day |
| February | 10.3 hr | 6.3 hr | Short day |
| March | 11.6 hr | 7.1 hr | Short day |
| April | 13.2 hr | 7.9 hr | Neutral |
| May | 14.5 hr | 8.6 hr | Long day |
| June | 15.2 hr | 11 hr | Long day |
| July | 15 hr | 10.9 hr | Long day |
| August | 13.8 hr | 9.2 hr | Neutral |
| September | 12.3 hr | 8.7 hr | Neutral |
| October | 10.8 hr | 7.1 hr | Short day |
| November | 9.4 hr | 5.5 hr | Short day |
| December | 8.7 hr | 4.6 hr | Short day |
Peak sun hours factor in typical cloud cover — use these for solar panel and shade-planning calculations.
Soil Temperature & Composting Calendar
Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.
Plant Warm Crops When
Soil reaches 60°F+
Soil rarely reaches 60°F — use black plastic mulch to warm soil.
Best Month to Compost
Jul
Microbial activity peaks when soil is warm.
Active Composting
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 | -5°F | 5°F | ❄️ Dormant | ~36 weeks |
| Feb | -2°F | 4°F | ❄️ Dormant | ~36 weeks |
| Mar | 4°F | 9°F | ❄️ Dormant | ~36 weeks |
| Apr | 23°F | 19°F | ❄️ Dormant | ~36 weeks |
| May | 35°F | 31°F | ❄️ Dormant | ~36 weeks |
| Jun | 46°F | 39°F | 🐢 Slow | ~24 weeks |
| Jul | 53°F | 45°F | ♻️ Active | ~14 weeks |
| Aug | 52°F | 48°F | ♻️ Active | ~14 weeks |
| Sep | 45°F | 45°F | 🐢 Slow | ~24 weeks |
| Oct | 31°F | 34°F | ❄️ Dormant | ~36 weeks |
| Nov | 16°F | 23°F | ❄️ Dormant | ~36 weeks |
| Dec | 4°F | 11°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 Teton County
Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.
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 | Moderate | Jun, Jul, Aug |
| Colorado potato beetle | Low | Jun, Jul |
| Flea beetles | Moderate | May, Jun, Jul |
| Slugs | Moderate | 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 Teton 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 | Jun 6 | Jul 10 | — | Rapid growth, attracts pollinators, suppresses weeds |
| White clover | May 2 | Jul 10 | ✓ 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 17 | Aug 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 | Jul 26 | May 10 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Jun 29 | May 10 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Aug 16 | May 17 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Jun 13 | May 17 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Jun 16 | May 10 | — | Erosion control, weed suppression, good biomass |
Wind & Microclimate
Wind dries soil, stresses plants, and affects frost patterns. Understanding your exposure helps with garden placement.
Seasonal Wind Speed
Spring: 15 mph Summer: 12 mph
Fall: 13 mph Winter: 16 mph
Prevailing wind: W. Windy area — plant a windbreak hedge on the W side of your garden.
Windbreak Benefit
6.5/10
Moderately beneficial — a simple fence or trellis can protect delicate crops from wind stress.
Frost Pocket Risk
High
Hilly terrain with 1,963 ft of elevation range — cold air pools in low spots. Avoid planting frost-sensitive crops in valleys.
Rainwater Harvesting Potential
How much water you can collect, when to collect it, and what size system you need for your garden.
Annual Collection
7,625 gal
Per 1,000 sq ft of roof area (at 80% collection efficiency)
Recommended Setup
8 rain barrels (55 gal each)
For a typical 500 sq ft garden. Serious collectors: consider a 2,000 gal tank.
Legal Status
Unrestricted
Rainwater harvesting is fully legal in your state with no restrictions.
Best Collection Months
Apr, May, Jul, Aug
Highest rainfall months — your barrels will fill up quickly during these months.
Months to Draw From Storage
Feb, Nov, Dec
Dry months when you'll rely on stored water — size your storage for this gap.
Rainwater collection tips for your area
- Your county receives approximately 15.3 inches of rain per year
- A 1,000 sq ft roof can collect roughly 7,625 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 Teton County
Soil Type
Loam
Soil pH 6.5–8.4 · Moderately Well Drained drainage
Good candidate for raised beds to maximise drainage and extend the season.
Watering Needs
Drought stress: 5.5/10
Moderate drought pressure. Drip irrigation and mulching are highly recommended to maintain soil moisture through summer.
Season Tips
103-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 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.
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 Teton County
106 vegetables that grow well in Zone 5a with planting dates for Teton County.
Show all 106 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Acorn Squash | Apr 26 | Jun 7 | Jun 14 | Sep 6 – Oct 11 | 80–100 |
| Amaranth | Apr 5 | Jun 7 | Jun 14 | Sep 13 – Nov 1 | 90–120 |
| Arugula | Apr 26 | May 17 | May 31 | Jul 5 – Sep 6 | 30–50 |
| Asparagus | — | — | Jun 14 | — | 730–1095 |
| Beets | — | May 17 | — | Jul 12 – Aug 9 | 50–70 |
| Belgian Endive | Apr 26 | May 17 | May 31 | Sep 20 – Nov 15 | 110–150 |
| Bitter Melon | Apr 5 | Jun 7 | Jun 14 | Aug 16 – Sep 27 | 60–90 |
| Black Beans | — | Jun 7 | — | Sep 6 – Oct 25 | 90–120 |
| Bok Choy | Apr 26 | May 17 | May 31 | Jul 12 – Aug 16 | 40–60 |
| Broccoli | Apr 26 | May 17 | May 31 | Aug 2 – Sep 13 | 60–90 |
| Broccoli Rabe | Apr 26 | May 17 | May 31 | Jul 12 – Aug 16 | 40–60 |
| Brussels Sprouts | Apr 26 | May 17 | May 31 | Aug 30 – Oct 25 | 90–130 |
| Butternut Squash | Apr 26 | Jun 7 | Jun 14 | Sep 13 – Oct 18 | 85–110 |
| Cabbage | Apr 26 | May 17 | May 31 | Aug 2 – Sep 27 | 60–100 |
| Calabash | Apr 5 | Jun 7 | Jun 14 | Sep 6 – Nov 1 | 80–120 |
| Carrots | — | May 17 | — | Jul 19 – Aug 23 | 60–80 |
| Cauliflower | Apr 26 | May 17 | May 31 | Jul 26 – Sep 27 | 55–100 |
| Celeriac | Apr 26 | May 17 | May 31 | Sep 13 – Oct 18 | 100–120 |
| Celery | Apr 26 | May 17 | May 31 | Aug 23 – Oct 18 | 80–120 |
| Celtuce | Apr 26 | May 17 | May 31 | Aug 2 – Sep 13 | 60–90 |
| Chard | Apr 26 | May 17 | May 31 | Jul 26 – Sep 13 | 50–60 |
| Chickpeas | Apr 26 | May 17 | May 31 | Aug 23 – Oct 4 | 80–110 |
| Chicory | Apr 26 | May 17 | May 31 | Aug 2 – Sep 13 | 60–85 |
| Chinese Cabbage | Apr 26 | May 17 | May 31 | Jul 26 – Aug 23 | 50–70 |
| Christmas Lima Beans | Apr 5 | Jun 7 | Jun 14 | Sep 6 – Oct 11 | 80–100 |
| Collard Greens | Apr 26 | May 17 | May 31 | Jul 26 – Sep 27 | 55–75 |
| Corn | — | Jun 7 | — | Aug 9 – Oct 4 | 60–100 |
| Cowpeas | — | Jun 7 | — | Aug 9 – Sep 20 | 60–90 |
| Cress | Apr 26 | May 17 | May 31 | Jun 14 – Jul 5 | 14–21 |
| Crookneck Squash | Apr 26 | Jun 7 | Jun 14 | Aug 2 – Aug 30 | 45–60 |
| Crosne | — | May 17 | — | Oct 18 – Nov 1 | 150–200 |
| Cucumber | Apr 26 | Jun 7 | Jun 14 | Aug 9 – Oct 4 | 50–70 |
| Daikon | — | May 17 | — | Jul 12 – Aug 9 | 50–70 |
| Delicata Squash | Apr 26 | Jun 7 | Jun 14 | Sep 6 – Oct 11 | 80–100 |
| Edamame | — | Jun 7 | — | Aug 23 – Oct 4 | 75–100 |
| Eggplant | Mar 22 | Jun 7 | Jun 14 | Aug 23 – Oct 25 | 65–85 |
| Endive | Apr 26 | May 17 | May 31 | Jul 19 – Aug 23 | 45–65 |
| Escarole | Apr 26 | May 17 | May 31 | Jul 26 – Aug 23 | 50–70 |
| Fava Beans | Apr 26 | May 17 | May 31 | Aug 16 – Sep 27 | 75–100 |
| Fennel | Apr 5 | Jun 7 | Jun 14 | Aug 16 – Sep 27 | 60–90 |
| Garlic | — | — | — | — | 90–240 |
| Green Beans | — | Jun 7 | — | Aug 2 – Sep 27 | 50–65 |
| Horseradish | — | — | Jun 14 | Oct 18 – Nov 29 | 120–180 |
| Hot Peppers | Mar 22 | Jun 7 | Jun 14 | Aug 23 – Nov 29 | 70–120 |
| Hubbard Squash | Apr 26 | Jun 7 | Jun 14 | Sep 27 – Nov 1 | 100–120 |
| Kabocha | Apr 26 | Jun 7 | Jun 14 | Sep 13 – Oct 11 | 85–100 |
| Kai Lan | Apr 26 | May 17 | May 31 | Jul 19 – Aug 16 | 45–60 |
| Kale | Apr 26 | May 17 | May 31 | Jul 26 – Sep 20 | 50–70 |
| Kidney Beans | — | Jun 7 | — | Sep 6 – Oct 11 | 85–110 |
| Kohlrabi | Apr 26 | May 17 | May 31 | Jul 19 – Aug 23 | 45–65 |
| Komatsuna | Apr 26 | May 17 | May 31 | Jul 5 – Aug 9 | 35–50 |
| Leeks | Apr 26 | May 17 | May 31 | Aug 30 – Nov 15 | 90–150 |
| Lentils | Apr 26 | May 17 | May 31 | Aug 23 – Oct 4 | 80–110 |
| Lettuce | Apr 26 | May 17 | May 31 | Jul 5 – Sep 13 | 30–60 |
| Lima Beans | — | Jun 7 | — | Aug 9 – Sep 20 | 60–90 |
| Mache | Apr 26 | May 17 | May 31 | Jul 12 – Aug 16 | 40–60 |
| Melon | Apr 26 | Jun 7 | Jun 14 | Aug 23 – Oct 11 | 70–100 |
| Microgreens | Apr 26 | May 17 | May 31 | Jun 7 – Jul 5 | 7–21 |
| Mitsuba | Apr 26 | May 17 | May 24 | Jul 19 – Sep 13 | 50–70 |
| Mizuna | Apr 26 | May 17 | May 31 | Jul 5 – Aug 2 | 30–45 |
| Mustard Greens | Apr 26 | May 17 | May 31 | Jul 5 – Sep 6 | 30–50 |
| Napa Cabbage | Apr 26 | May 17 | May 31 | Jul 26 – Aug 30 | 55–75 |
| New Zealand Spinach | Apr 5 | Jun 7 | Jun 14 | Aug 9 – Sep 6 | 55–70 |
| Okra | Apr 5 | Jun 7 | Jun 14 | Aug 9 – Oct 4 | 50–65 |
| Onion | Apr 26 | May 17 | May 31 | Aug 30 – Oct 18 | 90–120 |
| Pac Choi | Apr 26 | May 17 | May 31 | Jul 12 – Aug 9 | 40–55 |
| Parsnip | — | May 17 | — | Aug 30 – Oct 11 | 100–130 |
| Patty Pan Squash | Apr 26 | Jun 7 | Jun 14 | Aug 2 – Aug 30 | 45–60 |
| Peas | Apr 26 | May 17 | May 31 | Jul 26 – Sep 20 | 55–70 |
| Peppers | Mar 22 | Jun 7 | Jun 14 | Aug 16 – Oct 25 | 60–90 |
| Pole Beans | Apr 5 | Jun 7 | Jun 14 | Aug 9 – Oct 4 | 55–70 |
| Potatoes | Apr 5 | Jun 7 | Jun 14 | Aug 23 – Nov 1 | 70–120 |
| Pumpkin | Apr 26 | Jun 7 | Jun 14 | Sep 13 – Nov 1 | 85–120 |
| Purslane | Apr 26 | May 17 | May 31 | Jul 12 – Aug 16 | 40–60 |
| Radicchio | Apr 26 | May 17 | May 31 | Aug 2 – Sep 6 | 60–80 |
| Radish | — | May 17 | — | Jun 14 – Jul 5 | 22–35 |
| Rhubarb | — | — | Jun 21 | — | 365–730 |
| Romanesco | Apr 26 | May 17 | May 31 | Aug 16 – Sep 27 | 75–100 |
| Rutabaga | — | May 17 | — | Aug 9 – Sep 13 | 80–100 |
| Salsify | — | May 17 | — | Aug 30 – Oct 11 | 100–130 |
| Savoy Cabbage | Apr 26 | May 17 | May 31 | Aug 9 – Oct 4 | 70–110 |
| Scallions | Apr 26 | May 17 | May 31 | Jul 26 – Aug 23 | 50–70 |
| Scarlet Runner Beans | Apr 5 | Jun 7 | Jun 14 | Aug 16 – Sep 20 | 60–80 |
| Shallot | Apr 26 | May 17 | May 31 | Aug 30 – Oct 18 | 90–120 |
| Shiso | Apr 12 | Jun 7 | Jun 14 | Aug 9 – Oct 4 | 50–70 |
| Snap Peas | Apr 5 | Jun 7 | Jun 14 | Aug 9 – Oct 4 | 55–70 |
| Snow Peas | Apr 26 | May 17 | May 31 | Jul 26 – Sep 20 | 50–65 |
| Soybeans | — | Jun 7 | — | Aug 30 – Oct 25 | 80–120 |
| Spaghetti Squash | Apr 26 | Jun 7 | Jun 14 | Sep 13 – Oct 11 | 85–100 |
| Spinach | Apr 26 | May 17 | May 31 | Jul 5 – Sep 6 | 35–50 |
| Squash (Summer) | Apr 26 | Jun 7 | Jun 14 | Aug 2 – Oct 4 | 45–65 |
| Squash (Winter) | Apr 26 | Jun 7 | Jun 14 | Sep 6 – Nov 1 | 80–120 |
| Sunchoke | — | — | Jun 14 | Oct 4 – Nov 29 | 110–150 |
| Sunflower | Apr 5 | Jun 7 | Jun 14 | Aug 23 – Oct 11 | 70–100 |
| Sweet Corn | — | Jun 7 | — | Aug 9 – Sep 20 | 60–90 |
| Sweet Potatoes | Apr 5 | Jun 7 | Jun 14 | Sep 13 – Nov 1 | 90–120 |
| Tatsoi | Apr 26 | May 17 | May 31 | Jul 5 – Aug 9 | 35–50 |
| Tomatillo | Apr 5 | Jun 7 | Jun 14 | Aug 16 – Oct 25 | 60–85 |
| Tomatoes | Apr 5 | Jun 7 | Jun 14 | Aug 16 – Oct 25 | 60–85 |
| Turnip | — | May 17 | — | Jun 28 – Aug 2 | 40–60 |
| Watercress | Apr 26 | May 17 | May 31 | Jul 12 – Aug 16 | 40–60 |
| Watermelon | Apr 26 | Jun 7 | Jun 14 | Aug 23 – Oct 11 | 70–100 |
| Wax Beans | — | Jun 7 | — | Aug 2 – Sep 27 | 50–65 |
| Winter Melon | Apr 5 | Jun 7 | Jun 14 | Sep 13 – Nov 1 | 90–120 |
| Yard Long Beans | Apr 5 | Jun 7 | Jun 14 | Aug 9 – Sep 20 | 55–80 |
| Zucchini | Apr 26 | Jun 7 | Jun 14 | Aug 2 – Sep 27 | 45–60 |
🍓 Fruits to Grow in Teton County
27 fruits that grow well in Zone 5a with planting dates for Teton County.
Show all 27 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Alpine Strawberries | — | — | Jun 21 | Sep 20 – Dec 6 | 90–180 |
| Aronia | — | — | Jun 21 | — | 730–1095 |
| Blackberries | — | — | Jun 21 | — | 365–730 |
| Blueberries | — | — | Jun 21 | — | 730–1095 |
| Boysenberries | — | — | Jun 21 | — | 365–730 |
| Cantaloupe | — | — | Jun 21 | Aug 30 – Oct 4 | 70–90 |
| Che Fruit | — | — | Jun 21 | — | 1095–1825 |
| Cranberries | — | — | Jun 21 | — | 730–1095 |
| Currants | — | — | Jun 21 | — | 730–1095 |
| Elderberries | — | — | Jun 21 | — | 730–1095 |
| Goji Berries | — | — | Jun 21 | — | 730–1095 |
| Gooseberries | — | — | Jun 21 | — | 730–1095 |
| Grapes | — | — | Jun 21 | — | 730–1095 |
| Ground Cherry | — | — | Jun 21 | Aug 30 – Oct 25 | 65–80 |
| Hardy Kiwi | — | — | Jun 21 | — | 1095–1825 |
| Haskaps | — | — | Jun 21 | — | 730–1095 |
| Honeydew | — | — | Jun 21 | Sep 13 – Oct 25 | 80–110 |
| Jostaberry | — | — | Jun 21 | — | 730–1095 |
| Lingonberries | — | — | Jun 21 | — | 730–1095 |
| Medlar | — | — | Jun 21 | — | 1095–1825 |
| Mulberries | — | — | Jun 21 | — | 730–1825 |
| Pawpaw | — | — | Jun 21 | — | 1095–2555 |
| Persimmon | — | — | Jun 21 | — | 1095–2555 |
| Quince | — | — | Jun 21 | — | 1095–1825 |
| Raspberries | — | — | Jun 21 | — | 365–730 |
| Serviceberries | — | — | Jun 21 | — | 730–1095 |
| Strawberries | — | — | Jun 21 | Sep 20 – Dec 6 | 90–365 |
🌿 Herbs to Grow in Teton County
37 herbs that grow well in Zone 5a with planting dates for Teton County.
Show all 37 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Angelica | Apr 26 | May 17 | May 24 | — | 365–730 |
| Anise | Apr 26 | May 17 | May 24 | Aug 23 – Nov 8 | 90–120 |
| Basil | Apr 12 | Jun 7 | Jun 14 | Aug 9 – Oct 11 | 50–75 |
| Bee Balm | — | — | Jun 7 | Sep 6 – Nov 22 | 90–120 |
| Borage | Apr 26 | May 17 | May 24 | Jul 19 – Sep 6 | 50–60 |
| Caraway | Apr 26 | May 17 | May 24 | — | 365–450 |
| Catnip | — | — | Jun 7 | Aug 9 – Oct 11 | 60–80 |
| Chamomile | Apr 26 | May 17 | May 24 | Jul 26 – Oct 4 | 60–90 |
| Chervil | Apr 26 | May 17 | May 24 | Jul 5 – Sep 6 | 40–60 |
| Chives | — | — | Jun 7 | Aug 9 – Oct 18 | 60–90 |
| Cilantro | Apr 26 | May 17 | May 24 | Jul 5 – Sep 6 | 40–60 |
| Comfrey | — | — | Jun 7 | Aug 9 – Oct 18 | 60–90 |
| Cumin | Apr 26 | May 17 | May 24 | Sep 6 – Nov 8 | 100–120 |
| Dill | Apr 26 | May 17 | May 24 | Jul 5 – Sep 6 | 40–60 |
| Echinacea | — | — | Jun 7 | Oct 11 – Nov 22 | 120–180 |
| Epazote | Apr 12 | Jun 7 | Jun 14 | Aug 2 – Sep 27 | 45–60 |
| Fennel (herb) | Apr 26 | May 17 | May 24 | Jul 26 – Oct 4 | 60–90 |
| Feverfew | — | — | Jun 7 | Sep 6 – Nov 22 | 90–120 |
| Garlic Chives | — | — | Jun 7 | Aug 9 – Oct 18 | 60–90 |
| Horehound | — | — | Jun 7 | Aug 23 – Oct 18 | 75–90 |
| Hyssop | — | — | Jun 7 | Aug 16 – Oct 18 | 70–90 |
| Lavender | — | — | Jun 7 | Sep 6 – Nov 22 | 90–200 |
| Lemon Balm | — | — | Jun 7 | Aug 9 – Sep 27 | 60–70 |
| Lemon Thyme | — | — | Jun 7 | Aug 16 – Oct 18 | 70–90 |
| Lovage | — | — | Jun 7 | Aug 16 – Oct 18 | 70–90 |
| Mint | — | — | Jun 7 | Aug 9 – Oct 18 | 60–90 |
| Oregano | — | — | Jun 7 | Aug 9 – Oct 18 | 60–90 |
| Parsley | Apr 26 | May 17 | May 24 | Jul 26 – Sep 27 | 60–80 |
| Rue | — | — | Jun 7 | Aug 16 – Oct 18 | 70–90 |
| Sage | — | — | Jun 7 | Aug 23 – Oct 18 | 75–90 |
| Savory | — | — | Jun 7 | Aug 2 – Sep 27 | 50–70 |
| Sorrel | Apr 26 | May 17 | May 24 | Jul 5 – Sep 6 | 40–60 |
| Tarragon | — | — | Jun 7 | Aug 9 – Oct 18 | 60–90 |
| Thai Basil | Apr 12 | Jun 7 | Jun 14 | Aug 9 – Oct 11 | 50–75 |
| Thyme | — | — | Jun 7 | Aug 16 – Oct 18 | 70–90 |
| Valerian | — | — | Jun 7 | Oct 11 – Nov 22 | 120–180 |
| Yarrow | — | — | Jun 7 | Sep 6 – Nov 22 | 90–120 |
Monthly Planting Guide for Teton County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Teton County.
Frequently Asked Questions
What planting zone is Teton County, ID?
Teton 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 Teton County, ID?
Based on 31 years of NOAA weather station data, the median last spring frost in Teton County falls around May 31. In 8 out of 10 years, last frost lands between May 9 and June 21 — a 43-day window of variability. Use June 21 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in Teton County, ID?
The median first fall frost in Teton County arrives around September 11. In cold years it can arrive as early as August 30; in mild years as late as October 4. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Teton County?
Teton County has a frost-free growing season of approximately 103 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 7.82 days per decade.
What is the soil like in Teton County for gardening?
Teton County has predominantly Loam soil with a pH range of 6.5–8.4 and Moderately Well Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.
What is grown commercially in Teton County?
Teton County has commercial agriculture that includes Potatoes, Hay, Wheat, Cattle, Barley. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is Teton County a good location for home gardening?
Teton 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 Teton County Garden Planner — Free
A 24-page printable planner built for Teton 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