Elmore County, ID — Planting Guide
Elmore County, Idaho gardeners: here's your May plan
Your garden in Elmore County, Idaho is working on a schedule, even when you're not. Here's where you should be this May.
-
Set out basil, cucumber, and peppers seedlings
Bring a watering can to the bed. Each transplant gets a drink the moment it's in the ground, not ten minutes later.
-
Seed basil, cucumber, and green beans outdoors
Your soil is 47°F — warm enough for these to germinate without babying.
-
Fire up the seed-starting tray: cucumber, zucchini, and acorn squash
These need a head start before your last frost (April 27). Sow into cells now so you're ready to transplant in a few weeks.
-
Pick radish, cress, and microgreens
Taste as you pick. The first ripe produce is the best feedback loop you'll get all season.
Before June arrives, get these ready
- Starting indoors: basil, kale, and lettuce
- First harvests: carrots, green beans, and kale
Elmore County is in USDA Zone 7a. The average last spring frost is April 27 and the first fall frost is October 14, giving you a growing season of approximately 170 days.
At an elevation of 5,944 ft, Elmore County receives approximately 20.3 in of rainfall annually. Summer highs average 88°F with winter lows around 27°F. The predominant soil type is Loam.
Based on 31 years of NOAA climate station data, the last frost date here varies by 50 days year to year — ranging from March 30 in warm years to May 19 in cold years. The growing season is trending longer by about 8.12 days per decade. Elmore County scores 30/100 (Challenging) on the Microclimate Index.
🌡️ Zone
7a (°F to °F min)
❄️ Last Frost
April 27
🍂 First Frost
October 14
📅 Growing Season
170 days
⛰️ Elevation
5,944 ft
🌧️ Annual Rainfall
20.3 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 | 1.6 in | 7 days | — | None |
| Feb | 1.3 in | 6 days | — | None |
| Mar | 1.7 in | 7 days | 2.6 in | High |
| Apr | 1.9 in | 7 days | 2.4 in | High |
| May | 2.7 in | 7 days | 1.6 in | High |
| Jun | 1.6 in | 5 days | 2.7 in | High |
| Jul | 1.6 in | 6 days | 2.7 in | High |
| Aug | 1.9 in | 7 days | 2.4 in | High |
| Sep | 1.6 in | 6 days | 2.7 in | High |
| Oct | 1.7 in | 6 days | 2.6 in | High |
| Nov | 1.4 in | 5 days | — | None |
| Dec | 1.2 in | 7 days | — | None |
Annual total: 20.2 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.
Elmore County Soil Profile
Soil Type
Loam
Soil pH
6.7-8.3
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) | May 19 | Nov 4 | 169 days |
| Cautious | May 3 | Oct 25 | 175 days |
| Average year | Apr 27 | Oct 14 | 170 days |
| Optimistic | Apr 14 | Oct 7 | 176 days |
| Aggressive (risky) | Mar 30 | Sep 20 | 174 days |
Not very — frost dates can vary by ±50 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 8.1 days per decade). Spring is arriving earlier than it used to. Good news for gardeners.
Gardening Difficulty Score
Elmore County has challenging growing conditions. Season extension and careful variety selection are essential.
Local Gardening Help in Elmore 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 Elmore County's climate and soil.
County Extension Office
Elmore 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 Elmore County
Finding local nurseries & garden centers in Elmore County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Elmore 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 Elmore County ID" or "garden center Elmore 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 Elmore County ID" or check your extension office and local parks department. Facebook groups like "Elmore 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.
Show 6 more succession options
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
10.6 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 | 5.2 hr | Short day |
| February | 10.3 hr | 6.2 hr | Short day |
| March | 11.6 hr | 7.2 hr | Short day |
| April | 13.2 hr | 7.9 hr | Neutral |
| May | 14.5 hr | 8.8 hr | Long day |
| June | 15.2 hr | 10.6 hr | Long day |
| July | 14.9 hr | 10 hr | Long day |
| August | 13.8 hr | 9.2 hr | Neutral |
| September | 12.3 hr | 8.9 hr | Neutral |
| October | 10.8 hr | 6.8 hr | Short day |
| November | 9.5 hr | 5.7 hr | Short day |
| December | 8.8 hr | 4.9 hr | Short day |
Peak sun hours factor in typical cloud cover — use these for solar panel and shade-planning calculations.
Soil Temperature & Composting 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 Jul through Aug.
Best Month to Compost
Jun
Microbial activity peaks when soil is warm.
Active Composting
4 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 | 15°F | 22°F | ❄️ Dormant | ~36 weeks |
| Feb | 15°F | 21°F | ❄️ Dormant | ~36 weeks |
| Mar | 21°F | 24°F | ❄️ Dormant | ~36 weeks |
| Apr | 32°F | 33°F | ❄️ Dormant | ~36 weeks |
| May | 47°F | 41°F | 🐢 Slow | ~24 weeks |
| Jun | 57°F | 51°F | ♻️ Active | ~14 weeks |
| Jul | 62°F | 58°F | ♻️ Active | ~14 weeks |
| Aug | 63°F | 61°F | ♻️ Active | ~14 weeks |
| Sep | 57°F | 57°F | ♻️ Active | ~14 weeks |
| Oct | 45°F | 49°F | 🐢 Slow | ~24 weeks |
| Nov | 31°F | 36°F | ❄️ Dormant | ~36 weeks |
| Dec | 20°F | 28°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 Elmore 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 6 common pests in your area
| Pest | Risk Level | Peak Months |
|---|---|---|
| Aphids | High | Apr, May, Jun, Jul, Aug, Sep |
| Japanese beetles | High | Jun, Jul, Aug |
| Squash vine borers | Moderate | Jun, Jul |
| Tomato hornworms | Moderate | Jun, Jul, Aug |
| Cucumber beetles | Low | May, Jun, Jul |
| Stink bugs | Low | 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 Elmore County
Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with county-specific planting dates.
Spring Cover Crops (3 options) — Build soil before the main growing season
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Buckwheat | May 8 | Aug 5 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Sorghum-sudan grass | May 2 | Aug 5 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | Mar 28 | Aug 5 | ✓ Yes | Living mulch, fixes nitrogen, permanent ground cover |
Summer Cover Crops (1 options) — Fill gaps and suppress weeds between plantings
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Sunflowers | May 17 | Sep 16 | — | Deep roots break compaction, attract pollinators and beneficial insects |
Fall Cover Crops (7 options) — Plant after harvest to protect soil over winter
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Austrian winter peas | Aug 2 | Apr 13 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Crimson clover | Aug 22 | Apr 6 | ✓ Yes | Fixes nitrogen, attracts pollinators in spring |
| Daikon radish | Aug 22 | Apr 13 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Jul 28 | Apr 13 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Sep 1 | Apr 6 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Jul 25 | Apr 13 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Jul 19 | Apr 13 | — | 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: 16 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
8.8/10
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 1,208 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
10,067 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
Mar, Apr, May, 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 20.2 inches of rain per year
- A 1,000 sq ft roof can collect roughly 10,067 gallons annually
- Rainwater harvesting is fully legal in your state
- Stock up on stored water before your dry season (Feb, Nov, Dec)
- Use a first-flush diverter to keep roof debris out of your collection
Soil & Growing Conditions in Elmore County
Soil Type
Loam
Soil pH 6.7–8.3 · 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
170-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.
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 Elmore County
113 vegetables that grow well in Zone 7a with planting dates for Elmore County.
Show all 113 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Acorn Squash | Mar 30 | May 4 | May 11 | Aug 3 – Sep 7 | 80–100 |
| Amaranth | Mar 9 | May 4 | May 11 | Aug 10 – Sep 28 | 90–120 |
| Artichoke | — | — | May 11 | Sep 14 – Nov 23 | 120–180 |
| Arugula | Mar 23 | Apr 13 | Apr 27 | Jun 1 – Aug 3 | 30–50 |
| Asparagus | — | — | May 11 | — | 730–1095 |
| Beets | — | Apr 13 | — | Jun 8 – Jul 6 | 50–70 |
| Belgian Endive | Mar 23 | Apr 13 | Apr 27 | Aug 17 – Oct 12 | 110–150 |
| Bitter Melon | Mar 9 | May 4 | May 11 | Jul 13 – Aug 24 | 60–90 |
| Black Beans | — | May 4 | — | Aug 3 – Sep 21 | 90–120 |
| Bok Choy | Mar 23 | Apr 13 | Apr 27 | Jun 8 – Jul 13 | 40–60 |
| Broccoli | Mar 23 | Apr 13 | Apr 27 | Jun 29 – Aug 10 | 60–90 |
| Broccoli Rabe | Mar 23 | Apr 13 | Apr 27 | Jun 8 – Jul 13 | 40–60 |
| Brussels Sprouts | Mar 23 | Apr 13 | Apr 27 | Jul 27 – Sep 21 | 90–130 |
| Butternut Squash | Mar 30 | May 4 | May 11 | Aug 10 – Sep 14 | 85–110 |
| Cabbage | Mar 23 | Apr 13 | Apr 27 | Jun 29 – Aug 24 | 60–100 |
| Calabash | Mar 9 | May 4 | May 11 | Aug 3 – Sep 28 | 80–120 |
| Cardoon | — | — | May 11 | Sep 14 – Oct 26 | 120–150 |
| Carrots | — | Apr 13 | — | Jun 15 – Jul 20 | 60–80 |
| Cauliflower | Mar 23 | Apr 13 | Apr 27 | Jun 22 – Aug 24 | 55–100 |
| Celeriac | Mar 23 | Apr 13 | Apr 27 | Aug 10 – Sep 14 | 100–120 |
| Celery | Mar 23 | Apr 13 | Apr 27 | Jul 20 – Sep 14 | 80–120 |
| Celtuce | Mar 23 | Apr 13 | Apr 27 | Jun 29 – Aug 10 | 60–90 |
| Chard | Mar 23 | Apr 13 | Apr 27 | Jun 22 – Aug 10 | 50–60 |
| Chayote | Mar 9 | May 4 | May 11 | Sep 14 – Nov 23 | 120–180 |
| Chickpeas | Mar 23 | Apr 13 | Apr 27 | Jul 20 – Aug 31 | 80–110 |
| Chicory | Mar 23 | Apr 13 | Apr 27 | Jun 29 – Aug 10 | 60–85 |
| Chinese Cabbage | Mar 23 | Apr 13 | Apr 27 | Jun 22 – Jul 20 | 50–70 |
| Christmas Lima Beans | Mar 9 | May 4 | May 11 | Aug 3 – Sep 7 | 80–100 |
| Collard Greens | Mar 23 | Apr 13 | Apr 27 | Jun 22 – Aug 24 | 55–75 |
| Corn | — | May 4 | — | Jul 6 – Aug 31 | 60–100 |
| Cowpeas | — | May 4 | — | Jul 6 – Aug 17 | 60–90 |
| Cress | Mar 23 | Apr 13 | Apr 27 | May 11 – Jun 1 | 14–21 |
| Crookneck Squash | Mar 30 | May 4 | May 11 | Jun 29 – Jul 27 | 45–60 |
| Crosne | — | Apr 13 | — | Sep 14 – Nov 16 | 150–200 |
| Cucumber | Mar 30 | May 4 | May 11 | Jul 6 – Aug 31 | 50–70 |
| Daikon | — | Apr 13 | — | Jun 8 – Jul 6 | 50–70 |
| Delicata Squash | Mar 30 | May 4 | May 11 | Aug 3 – Sep 7 | 80–100 |
| Edamame | — | May 4 | — | Jul 20 – Aug 31 | 75–100 |
| Eggplant | Feb 23 | May 4 | May 11 | Jul 20 – Sep 21 | 65–85 |
| Endive | Mar 23 | Apr 13 | Apr 27 | Jun 15 – Jul 20 | 45–65 |
| Escarole | Mar 23 | Apr 13 | Apr 27 | Jun 22 – Jul 20 | 50–70 |
| Fava Beans | Mar 23 | Apr 13 | Apr 27 | Jul 13 – Aug 24 | 75–100 |
| Fennel | Mar 9 | May 4 | May 11 | Jul 13 – Aug 24 | 60–90 |
| Garlic | — | — | — | — | 90–240 |
| Green Beans | — | May 4 | — | Jun 29 – Aug 24 | 50–65 |
| Horseradish | — | — | May 11 | Sep 14 – Nov 23 | 120–180 |
| Hot Peppers | Feb 23 | May 4 | May 11 | Jul 20 – Oct 26 | 70–120 |
| Hubbard Squash | Mar 30 | May 4 | May 11 | Aug 24 – Sep 28 | 100–120 |
| Jicama | Mar 9 | May 4 | May 11 | Sep 14 – Nov 23 | 120–180 |
| Kabocha | Mar 30 | May 4 | May 11 | Aug 10 – Sep 7 | 85–100 |
| Kai Lan | Mar 23 | Apr 13 | Apr 27 | Jun 15 – Jul 13 | 45–60 |
| Kale | Mar 23 | Apr 13 | Apr 27 | Jun 22 – Aug 17 | 50–70 |
| Kidney Beans | — | May 4 | — | Aug 3 – Sep 7 | 85–110 |
| Kohlrabi | Mar 23 | Apr 13 | Apr 27 | Jun 15 – Jul 20 | 45–65 |
| Komatsuna | Mar 23 | Apr 13 | Apr 27 | Jun 1 – Jul 6 | 35–50 |
| Leeks | Mar 23 | Apr 13 | Apr 27 | Jul 27 – Oct 12 | 90–150 |
| Lentils | Mar 23 | Apr 13 | Apr 27 | Jul 20 – Aug 31 | 80–110 |
| Lettuce | Mar 23 | Apr 13 | Apr 27 | Jun 1 – Aug 10 | 30–60 |
| Lima Beans | — | May 4 | — | Jul 6 – Aug 17 | 60–90 |
| Loofah | Mar 9 | May 4 | May 11 | Aug 24 – Oct 26 | 100–150 |
| Luffa | Mar 9 | May 4 | May 11 | Aug 10 – Oct 26 | 90–150 |
| Mache | Mar 23 | Apr 13 | Apr 27 | Jun 8 – Jul 13 | 40–60 |
| Malabar Spinach | Mar 9 | May 4 | May 11 | Jul 6 – Aug 3 | 55–70 |
| Melon | Mar 30 | May 4 | May 11 | Jul 20 – Sep 7 | 70–100 |
| Microgreens | Mar 23 | Apr 13 | Apr 27 | May 4 – Jun 1 | 7–21 |
| Mitsuba | Mar 23 | Apr 13 | Apr 20 | Jun 15 – Aug 10 | 50–70 |
| Mizuna | Mar 23 | Apr 13 | Apr 27 | Jun 1 – Jun 29 | 30–45 |
| Mustard Greens | Mar 23 | Apr 13 | Apr 27 | Jun 1 – Aug 3 | 30–50 |
| Napa Cabbage | Mar 23 | Apr 13 | Apr 27 | Jun 22 – Jul 27 | 55–75 |
| New Zealand Spinach | Mar 9 | May 4 | May 11 | Jul 6 – Aug 3 | 55–70 |
| Okra | Mar 9 | May 4 | May 11 | Jul 6 – Aug 31 | 50–65 |
| Onion | Mar 23 | Apr 13 | Apr 27 | Jul 27 – Sep 14 | 90–120 |
| Pac Choi | Mar 23 | Apr 13 | Apr 27 | Jun 8 – Jul 6 | 40–55 |
| Parsnip | — | Apr 13 | — | Jul 27 – Sep 7 | 100–130 |
| Patty Pan Squash | Mar 30 | May 4 | May 11 | Jun 29 – Jul 27 | 45–60 |
| Peas | Mar 23 | Apr 13 | Apr 27 | Jun 22 – Aug 17 | 55–70 |
| Peppers | Feb 23 | May 4 | May 11 | Jul 13 – Sep 21 | 60–90 |
| Pole Beans | Mar 9 | May 4 | May 11 | Jul 6 – Aug 31 | 55–70 |
| Potatoes | Mar 9 | May 4 | May 11 | Jul 20 – Sep 28 | 70–120 |
| Pumpkin | Mar 30 | May 4 | May 11 | Aug 10 – Sep 28 | 85–120 |
| Purslane | Mar 23 | Apr 13 | Apr 27 | Jun 8 – Jul 13 | 40–60 |
| Radicchio | Mar 23 | Apr 13 | Apr 27 | Jun 29 – Aug 3 | 60–80 |
| Radish | — | Apr 13 | — | May 11 – Jun 1 | 22–35 |
| Rhubarb | — | — | May 18 | — | 365–730 |
| Romanesco | Mar 23 | Apr 13 | Apr 27 | Jul 13 – Aug 24 | 75–100 |
| Rutabaga | — | Apr 13 | — | Jul 6 – Aug 10 | 80–100 |
| Salsify | — | Apr 13 | — | Jul 27 – Sep 7 | 100–130 |
| Savoy Cabbage | Mar 23 | Apr 13 | Apr 27 | Jul 6 – Aug 31 | 70–110 |
| Scallions | Mar 23 | Apr 13 | Apr 27 | Jun 22 – Jul 20 | 50–70 |
| Scarlet Runner Beans | Mar 9 | May 4 | May 11 | Jul 13 – Aug 17 | 60–80 |
| Shallot | Mar 23 | Apr 13 | Apr 27 | Jul 27 – Sep 14 | 90–120 |
| Shiso | Mar 9 | May 4 | May 11 | Jul 6 – Aug 31 | 50–70 |
| Snap Peas | Mar 9 | May 4 | May 11 | Jul 6 – Aug 31 | 55–70 |
| Snow Peas | Mar 23 | Apr 13 | Apr 27 | Jun 22 – Aug 17 | 50–65 |
| Soybeans | — | May 4 | — | Jul 27 – Sep 21 | 80–120 |
| Spaghetti Squash | Mar 30 | May 4 | May 11 | Aug 10 – Sep 7 | 85–100 |
| Spinach | Mar 23 | Apr 13 | Apr 27 | Jun 1 – Aug 3 | 35–50 |
| Squash (Summer) | Mar 30 | May 4 | May 11 | Jun 29 – Aug 31 | 45–65 |
| Squash (Winter) | Mar 30 | May 4 | May 11 | Aug 3 – Sep 28 | 80–120 |
| Sunchoke | — | — | May 11 | Aug 31 – Oct 26 | 110–150 |
| Sunflower | Mar 9 | May 4 | May 11 | Jul 20 – Sep 7 | 70–100 |
| Sweet Corn | — | May 4 | — | Jul 6 – Aug 17 | 60–90 |
| Sweet Potatoes | Mar 9 | May 4 | May 11 | Aug 10 – Sep 28 | 90–120 |
| Tatsoi | Mar 23 | Apr 13 | Apr 27 | Jun 1 – Jul 6 | 35–50 |
| Tomatillo | Mar 9 | May 4 | May 11 | Jul 13 – Sep 21 | 60–85 |
| Tomatoes | Mar 9 | May 4 | May 11 | Jul 13 – Sep 21 | 60–85 |
| Turnip | — | Apr 13 | — | May 25 – Jun 29 | 40–60 |
| Watercress | Mar 23 | Apr 13 | Apr 27 | Jun 8 – Jul 13 | 40–60 |
| Watermelon | Mar 30 | May 4 | May 11 | Jul 20 – Sep 7 | 70–100 |
| Wax Beans | — | May 4 | — | Jun 29 – Aug 24 | 50–65 |
| Winter Melon | Mar 9 | May 4 | May 11 | Aug 10 – Sep 28 | 90–120 |
| Yard Long Beans | Mar 9 | May 4 | May 11 | Jul 6 – Aug 17 | 55–80 |
| Zucchini | Mar 30 | May 4 | May 11 | Jun 29 – Aug 24 | 45–60 |
🍓 Fruits to Grow in Elmore County
31 fruits that grow well in Zone 7a with planting dates for Elmore County.
Show all 31 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Alpine Strawberries | — | — | May 18 | Aug 17 – Nov 30 | 90–180 |
| Aronia | — | — | May 18 | — | 730–1095 |
| Blackberries | — | — | May 18 | — | 365–730 |
| Blueberries | — | — | May 18 | — | 730–1095 |
| Boysenberries | — | — | May 18 | — | 365–730 |
| Cantaloupe | — | — | May 18 | Jul 27 – Aug 31 | 70–90 |
| Che Fruit | — | — | May 18 | — | 1095–1825 |
| Cranberries | — | — | May 18 | — | 730–1095 |
| Currants | — | — | May 18 | — | 730–1095 |
| Elderberries | — | — | May 18 | — | 730–1095 |
| Figs | — | — | May 18 | — | 730–1825 |
| Goji Berries | — | — | May 18 | — | 730–1095 |
| Gooseberries | — | — | May 18 | — | 730–1095 |
| Grapes | — | — | May 18 | — | 730–1095 |
| Ground Cherry | — | — | May 18 | Jul 27 – Sep 21 | 65–80 |
| Hardy Kiwi | — | — | May 18 | — | 1095–1825 |
| Haskaps | — | — | May 18 | — | 730–1095 |
| Honeydew | — | — | May 18 | Aug 10 – Sep 21 | 80–110 |
| Jostaberry | — | — | May 18 | — | 730–1095 |
| Kiwi | — | — | May 18 | — | 1095–1825 |
| Lingonberries | — | — | May 18 | — | 730–1095 |
| Loquat | — | — | May 18 | — | 730–1825 |
| Medlar | — | — | May 18 | — | 1095–1825 |
| Mulberries | — | — | May 18 | — | 730–1825 |
| Pawpaw | — | — | May 18 | — | 1095–2555 |
| Persimmon | — | — | May 18 | — | 1095–2555 |
| Pomegranate | — | — | May 18 | — | 730–1095 |
| Quince | — | — | May 18 | — | 1095–1825 |
| Raspberries | — | — | May 18 | — | 365–730 |
| Serviceberries | — | — | May 18 | — | 730–1095 |
| Strawberries | — | — | May 18 | Aug 17 – Dec 28 | 90–365 |
🌿 Herbs to Grow in Elmore County
39 herbs that grow well in Zone 7a with planting dates for Elmore County.
Show all 39 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Angelica | Mar 23 | Apr 13 | Apr 20 | — | 365–730 |
| Anise | Mar 23 | Apr 13 | Apr 20 | Jul 20 – Oct 5 | 90–120 |
| Basil | Mar 9 | May 4 | May 11 | Jul 6 – Sep 7 | 50–75 |
| Bee Balm | — | — | May 4 | Aug 3 – Oct 19 | 90–120 |
| Borage | Mar 23 | Apr 13 | Apr 20 | Jun 15 – Aug 3 | 50–60 |
| Caraway | Mar 23 | Apr 13 | Apr 20 | — | 365–450 |
| Catnip | — | — | May 4 | Jul 6 – Sep 7 | 60–80 |
| Chamomile | Mar 23 | Apr 13 | Apr 20 | Jun 22 – Aug 31 | 60–90 |
| Chervil | Mar 23 | Apr 13 | Apr 20 | Jun 1 – Aug 3 | 40–60 |
| Chives | — | — | May 4 | Jul 6 – Sep 14 | 60–90 |
| Cilantro | Mar 23 | Apr 13 | Apr 20 | Jun 1 – Aug 3 | 40–60 |
| Comfrey | — | — | May 4 | Jul 6 – Sep 14 | 60–90 |
| Cumin | Mar 23 | Apr 13 | Apr 20 | Aug 3 – Oct 5 | 100–120 |
| Dill | Mar 23 | Apr 13 | Apr 20 | Jun 1 – Aug 3 | 40–60 |
| Echinacea | — | — | May 4 | Sep 7 – Dec 14 | 120–180 |
| Epazote | Mar 9 | May 4 | May 11 | Jun 29 – Aug 24 | 45–60 |
| Fennel (herb) | Mar 23 | Apr 13 | Apr 20 | Jun 22 – Aug 31 | 60–90 |
| Feverfew | — | — | May 4 | Aug 3 – Oct 19 | 90–120 |
| Garlic Chives | — | — | May 4 | Jul 6 – Sep 14 | 60–90 |
| Horehound | — | — | May 4 | Jul 20 – Sep 14 | 75–90 |
| Hyssop | — | — | May 4 | Jul 13 – Sep 14 | 70–90 |
| Lavender | — | — | May 4 | Aug 3 – Dec 14 | 90–200 |
| Lemon Balm | — | — | May 4 | Jul 6 – Aug 24 | 60–70 |
| Lemon Thyme | — | — | May 4 | Jul 13 – Sep 14 | 70–90 |
| Lovage | — | — | May 4 | Jul 13 – Sep 14 | 70–90 |
| Marjoram | — | — | May 4 | Jul 6 – Sep 14 | 60–90 |
| Mint | — | — | May 4 | Jul 6 – Sep 14 | 60–90 |
| Oregano | — | — | May 4 | Jul 6 – Sep 14 | 60–90 |
| Parsley | Mar 23 | Apr 13 | Apr 20 | Jun 22 – Aug 24 | 60–80 |
| Rosemary | — | — | May 4 | Jul 27 – Dec 14 | 80–180 |
| Rue | — | — | May 4 | Jul 13 – Sep 14 | 70–90 |
| Sage | — | — | May 4 | Jul 20 – Sep 14 | 75–90 |
| Savory | — | — | May 4 | Jun 29 – Aug 24 | 50–70 |
| Sorrel | Mar 23 | Apr 13 | Apr 20 | Jun 1 – Aug 3 | 40–60 |
| Tarragon | — | — | May 4 | Jul 6 – Sep 14 | 60–90 |
| Thai Basil | Mar 9 | May 4 | May 11 | Jul 6 – Sep 7 | 50–75 |
| Thyme | — | — | May 4 | Jul 13 – Sep 14 | 70–90 |
| Valerian | — | — | May 4 | Sep 7 – Dec 14 | 120–180 |
| Yarrow | — | — | May 4 | Aug 3 – Oct 19 | 90–120 |
Monthly Planting Guide for Elmore County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Elmore County.
Frequently Asked Questions
What planting zone is Elmore County, ID?
Elmore County is in USDA Hardiness Zone 7a. 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 Elmore County, ID?
Based on 31 years of NOAA weather station data, the median last spring frost in Elmore County falls around April 27. In 8 out of 10 years, last frost lands between March 30 and May 19 — a 50-day window of variability. Use May 19 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in Elmore County, ID?
The median first fall frost in Elmore County arrives around October 14. In cold years it can arrive as early as September 20; in mild years as late as November 4. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Elmore County?
Elmore County has a frost-free growing season of approximately 170 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 longer by about 8.12 days per decade.
What is the soil like in Elmore County for gardening?
Elmore County has predominantly Loam soil with a pH range of 6.7–8.3 and Excessively Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.
What is grown commercially in Elmore County?
Elmore County has commercial agriculture that includes Potatoes, Hay, Wheat. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is Elmore County a good location for home gardening?
Elmore County scores 30/100 (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 Elmore County Garden Planner — Free
A 24-page printable planner built for Elmore County (Zone 7a). 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