Owyhee County, ID — Planting Guide
June in the garden — Owyhee County, Idaho
June rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Owyhee County, Idaho.
-
Move basil, cucumber, and kale from tray to bed
Water the tray well an hour before you transplant. Roots slide out cleanly and settle in faster.
-
Seed basil, cucumber, and green beans outdoors
Keep the top inch of soil moist until germination — a gentle morning watering for 5–7 days does the job.
-
Start sunflower indoors
You're about 14 weeks out from your last frost — the perfect window to get these germinating indoors.
-
Pick radish, cress, and microgreens
The more you pick, the more the plant produces. Letting fruit overripen tells the plant it's time to stop.
To set up a strong July, finish these tasks
- Starting indoors: basil, cucumber, and kale
- First harvests: carrots, lettuce, and radish
- Fall sowing: carrots, kale, and lettuce
Owyhee County is in USDA Zone 7a. The average last spring frost is June 9 and the first fall frost is September 20, giving you a growing season of approximately 103 days.
At an elevation of 4,621 ft, Owyhee County receives approximately 18.1 in of rainfall annually. Summer highs average 90°F with winter lows around 25°F. The predominant soil type is Loam.
Based on 31 years of NOAA climate station data, the last frost date here varies by 41 days year to year — ranging from May 8 in warm years to June 19 in cold years. The growing season is trending longer by about 5.81 days per decade. Owyhee County scores 32/100 (Challenging) on the Microclimate Index.
🌡️ Zone
7a (0°F to 5°F min)
❄️ Last Frost
June 9
🍂 First Frost
September 20
📅 Growing Season
103 days
⛰️ Elevation
4,621 ft
🌧️ Annual Rainfall
18.1 in
Monthly Watering Calendar for Owyhee County
When you'll need to water your garden — based on average monthly rainfall vs. the ~1 inch/week most gardens need.
Why this matters: 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. Owyhee County's 18" 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 | 1.1 in | 6 days | — | None |
| Mar | 1.7 in | 8 days | 2.6 in | High |
| Apr | 2 in | 8 days | 2.3 in | High |
| May | 2.3 in | 7 days | 2 in | High |
| Jun | 1.4 in | 4 days | 2.9 in | High |
| Jul | 1.8 in | 5 days | 2.5 in | High |
| Aug | 1.7 in | 6 days | 2.6 in | High |
| Sep | 1.3 in | 6 days | 3 in | High |
| Oct | 1.6 in | 6 days | 2.7 in | High |
| Nov | 1.2 in | 6 days | — | None |
| Dec | 1 in | 6 days | — | None |
Annual total: 18.2 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.
Owyhee 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
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 19 | Oct 17 | 120 days |
| Cautious | Jun 16 | Sep 29 | 105 days |
| Average year | Jun 9 | Sep 20 | 103 days |
| Optimistic | Jun 1 | Sep 13 | 104 days |
| Aggressive (risky) | May 8 | Sep 1 | 116 days |
Not very — frost dates can vary by ±41 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 5.8 days per decade). Spring is arriving earlier than it used to. Good news for gardeners.
Gardening Difficulty Score
Owyhee County has challenging growing conditions. Season extension and careful variety selection are essential.
Local Gardening Help in Owyhee 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 Owyhee County's climate and soil.
County Extension Office
Owyhee 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 Owyhee County
Finding local nurseries & garden centers in Owyhee County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Owyhee 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 Owyhee County ID" or "garden center Owyhee 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 Owyhee County ID" or check your extension office and local parks department. Facebook groups like "Owyhee 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 in Owyhee County
Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.
The practical takeaway: Lettuce and cilantro "bolt" (go to seed) when days lengthen. Knowing your day-length curve helps you time spring plantings to harvest before the bolting trigger hits. Owyhee County's daylight ranges shape the planting calendar.
Longest Day
15.1 hours
Summer solstice daylight
Shortest Day
8.9 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 | 9.2 hr | 4.9 hr | Short day |
| February | 10.3 hr | 5.9 hr | Short day |
| March | 11.7 hr | 7.1 hr | Short day |
| April | 13.2 hr | 7.8 hr | Neutral |
| May | 14.4 hr | 9.2 hr | Long day |
| June | 15.1 hr | 11 hr | Long day |
| July | 14.8 hr | 10.6 hr | Long day |
| August | 13.7 hr | 9.4 hr | Neutral |
| September | 12.3 hr | 8.8 hr | Neutral |
| October | 10.8 hr | 7 hr | Short day |
| November | 9.5 hr | 5.7 hr | Short day |
| December | 8.9 hr | 4.8 hr | Short day |
Peak sun hours factor in typical cloud cover — use these for solar panel and shade-planning calculations.
Soil Temperature & Composting in Owyhee County
Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.
Why this matters: Air temperature lies. Your air can be 70°F in April but the soil 4 inches down is still 50°F — too cold for tomatoes or peppers to root properly. Owyhee County's soil temperature curve tells you the real planting window. A $5 soil thermometer pays for itself in one season.
Plant Warm Crops When
Soil reaches 60°F+
Soil warm enough from Jun through Sep.
Best Month to Compost
Jul
Microbial activity peaks when soil is warm.
Active Composting
6 months
Solid season. Piles go dormant in winter.
View detailed monthly data
| Month | Soil 4" Deep | Soil 8" Deep | Compost Activity | Time to Finish |
|---|---|---|---|---|
| Jan | 17°F | 25°F | ❄️ Dormant | ~36 weeks |
| Feb | 19°F | 25°F | ❄️ Dormant | ~36 weeks |
| Mar | 28°F | 30°F | ❄️ Dormant | ~36 weeks |
| Apr | 39°F | 38°F | ❄️ Dormant | ~36 weeks |
| May | 51°F | 47°F | ♻️ Active | ~14 weeks |
| Jun | 62°F | 55°F | ♻️ Active | ~14 weeks |
| Jul | 70°F | 62°F | 🔥 Peak | ~8 weeks |
| Aug | 68°F | 64°F | 🔥 Peak | ~8 weeks |
| Sep | 61°F | 62°F | ♻️ Active | ~14 weeks |
| Oct | 50°F | 54°F | ♻️ Active | ~14 weeks |
| Nov | 36°F | 43°F | ❄️ Dormant | ~36 weeks |
| Dec | 24°F | 31°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 Owyhee County
Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.
Why it matters: Warm humid regions cycle through pest generations 3-5x faster than cold dry regions. Owyhee County's pest score is your early-warning system: high score means commit to disease-resistant varieties and accept some crop loss to bugs.
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 | Moderate | May, Jun, Jul |
| Stink bugs | Moderate | 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 Owyhee County
Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with planting dates calibrated for your area.
The practical takeaway: A fall-planted cover crop in Owyhee County is the closest thing to free soil amendment. Plant cereal rye or hairy vetch after harvest; chop it down before it flowers in spring; the soil it leaves behind out-grows any store-bought compost.
Spring Cover Crops (3 options) — Build soil before the main growing season
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Buckwheat | Jun 15 | Jul 26 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Sorghum-sudan grass | Jun 17 | Jul 12 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | May 14 | Jul 12 | ✓ 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 | Jul 10 | Aug 30 | — | 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 | Jul 20 | May 19 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Crimson clover | Jul 17 | May 19 | ✓ Yes | Fixes nitrogen, attracts pollinators in spring |
| Daikon radish | Jul 24 | May 19 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Jun 30 | May 19 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Aug 21 | May 26 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Jun 15 | May 19 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Jun 29 | May 19 | — | Erosion control, weed suppression, good biomass |
Wind & Microclimate in Owyhee County
The practical takeaway: Why care about wind? Above about 10 mph, evaporation jumps and pollinators struggle to land on flowers. Owyhee County's 10.6 mph average means you can plant tall crops without much support, but it doesn't mean ignore wind — a 20+ mph storm still snaps unstaked tomatoes.
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: 12 mph Winter: 16 mph
Prevailing wind: W. Windy area — plant a windbreak hedge on the W side of your garden.
Windbreak Benefit
7.3/10
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 2,080 ft of elevation range — cold air pools in low spots. Avoid planting frost-sensitive crops in valleys.
Rainwater Harvesting in Owyhee County
How much water you can collect, when to collect it, and what size system you need for your garden.
Quick context: The first inch of rain washes the roof clean — a first-flush diverter sends it to waste before the barrel fills. Worth the extra $20 for cleaner garden water. Owyhee County gets 18" annually, so you'll fill and flush many times per year.
Annual Collection
9,070 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
Mar, Apr, May, Jul
Highest rainfall months — your barrels will fill up quickly during these months.
Months to Draw From Storage
Jan, Feb, Dec
Dry months when you'll rely on stored water — size your storage for this gap.
Rainwater collection tips for your area
- Your county receives approximately 18.2 inches of rain per year
- A 1,000 sq ft roof can collect roughly 9,070 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 Owyhee County
Soil Type
Loam
Soil pH 6.3–7.8 · Well 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
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 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 Owyhee County
112 vegetables that grow well in Zone 7a with planting dates for Owyhee County.
Show all 112 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Acorn Squash | May 12 | Jun 16 | Jun 23 | — | Sep 15 – Oct 20 | 80–100 |
| Amaranth | Apr 21 | Jun 16 | Jun 23 | — | Sep 22 – Nov 10 | 90–120 |
| Artichoke | — | — | Jun 23 | — | Oct 27 – Jan 5 | 120–180 |
| Arugula | May 5 | May 26 | Jun 9 | Jul 12 | Jul 14 – Sep 15 | 30–50 |
| Asparagus | — | — | Jun 23 | — | — | 730–1095 |
| Beets | — | May 26 | — | Jul 12 | Jul 21 – Aug 18 | 50–70 |
| Belgian Endive | May 5 | May 26 | Jun 9 | Jul 12 | Sep 29 – Nov 24 | 110–150 |
| Bitter Melon | Apr 21 | Jun 16 | Jun 23 | — | Aug 25 – Oct 6 | 60–90 |
| Black Beans | — | Jun 16 | — | — | Sep 15 – Nov 3 | 90–120 |
| Bok Choy | May 5 | May 26 | Jun 9 | Jul 12 | Jul 21 – Aug 25 | 40–60 |
| Broccoli | May 5 | May 26 | Jun 9 | Jul 12 | Aug 11 – Sep 22 | 60–90 |
| Broccoli Rabe | May 5 | May 26 | Jun 9 | Jul 12 | Jul 21 – Aug 25 | 40–60 |
| Brussels Sprouts | May 5 | May 26 | Jun 9 | Jul 12 | Sep 8 – Nov 3 | 90–130 |
| Butternut Squash | May 12 | Jun 16 | Jun 23 | — | Sep 22 – Oct 27 | 85–110 |
| Cabbage | May 5 | May 26 | Jun 9 | Jul 12 | Aug 11 – Oct 6 | 60–100 |
| Calabash | Apr 21 | Jun 16 | Jun 23 | — | Sep 15 – Nov 10 | 80–120 |
| Cardoon | — | — | Jun 23 | — | Oct 27 – Dec 8 | 120–150 |
| Carrots | — | May 26 | — | Jul 12 | Jul 28 – Sep 1 | 60–80 |
| Cauliflower | May 5 | May 26 | Jun 9 | Jul 12 | Aug 4 – Oct 6 | 55–100 |
| Celeriac | May 5 | May 26 | Jun 9 | Jul 12 | Sep 22 – Oct 27 | 100–120 |
| Celery | May 5 | May 26 | Jun 9 | Jul 12 | Sep 1 – Oct 27 | 80–120 |
| Celtuce | May 5 | May 26 | Jun 9 | Jul 12 | Aug 11 – Sep 22 | 60–90 |
| Chard | May 5 | May 26 | Jun 9 | Jul 12 | Aug 4 – Sep 22 | 50–60 |
| Chayote | Apr 21 | Jun 16 | Jun 23 | — | Oct 27 – Jan 5 | 120–180 |
| Chickpeas | May 5 | May 26 | Jun 9 | Jul 12 | Sep 1 – Oct 13 | 80–110 |
| Chicory | May 5 | May 26 | Jun 9 | Jul 12 | Aug 11 – Sep 22 | 60–85 |
| Chinese Cabbage | May 5 | May 26 | Jun 9 | Jul 12 | Aug 4 – Sep 1 | 50–70 |
| Christmas Lima Beans | Apr 21 | Jun 16 | Jun 23 | — | Sep 15 – Oct 20 | 80–100 |
| Collard Greens | May 5 | May 26 | Jun 9 | Jul 12 | Aug 4 – Oct 6 | 55–75 |
| Corn | — | Jun 16 | — | — | Aug 18 – Oct 13 | 60–100 |
| Cowpeas | — | Jun 16 | — | — | Aug 18 – Sep 29 | 60–90 |
| Cress | May 5 | May 26 | Jun 9 | Jul 12 | Jun 23 – Jul 14 | 14–21 |
| Crookneck Squash | May 12 | Jun 16 | Jun 23 | — | Aug 11 – Sep 8 | 45–60 |
| Crosne | — | May 26 | — | Jul 12 | Oct 27 – Dec 29 | 150–200 |
| Cucumber | May 12 | Jun 16 | Jun 23 | — | Aug 18 – Oct 13 | 50–70 |
| Daikon | — | May 26 | — | Jul 12 | Jul 21 – Aug 18 | 50–70 |
| Delicata Squash | May 12 | Jun 16 | Jun 23 | — | Sep 15 – Oct 20 | 80–100 |
| Edamame | — | Jun 16 | — | — | Sep 1 – Oct 13 | 75–100 |
| Eggplant | Apr 7 | Jun 16 | Jun 23 | — | Sep 1 – Nov 3 | 65–85 |
| Endive | May 5 | May 26 | Jun 9 | Jul 12 | Jul 28 – Sep 1 | 45–65 |
| Escarole | May 5 | May 26 | Jun 9 | Jul 12 | Aug 4 – Sep 1 | 50–70 |
| Fava Beans | May 5 | May 26 | Jun 9 | Jul 12 | Aug 25 – Oct 6 | 75–100 |
| Fennel | Apr 21 | Jun 16 | Jun 23 | — | Aug 25 – Oct 6 | 60–90 |
| Garlic | — | — | — | Aug 9 | Nov 8 – Mar 21 | 90–240 |
| Green Beans | — | Jun 16 | — | — | Aug 11 – Oct 6 | 50–65 |
| Horseradish | — | — | Jun 23 | — | Oct 27 – Jan 5 | 120–180 |
| Hot Peppers | Apr 7 | Jun 16 | Jun 23 | — | Sep 1 – Dec 8 | 70–120 |
| Hubbard Squash | May 12 | Jun 16 | Jun 23 | — | Oct 6 – Nov 10 | 100–120 |
| Jicama | Apr 21 | Jun 16 | Jun 23 | — | Oct 27 – Jan 5 | 120–180 |
| Kabocha | May 12 | Jun 16 | Jun 23 | — | Sep 22 – Oct 20 | 85–100 |
| Kai Lan | May 5 | May 26 | Jun 9 | Jul 12 | Jul 28 – Aug 25 | 45–60 |
| Kale | May 5 | May 26 | Jun 9 | Jul 12 | Aug 4 – Sep 29 | 50–70 |
| Kidney Beans | — | Jun 16 | — | — | Sep 15 – Oct 20 | 85–110 |
| Kohlrabi | May 5 | May 26 | Jun 9 | Jul 12 | Jul 28 – Sep 1 | 45–65 |
| Komatsuna | May 5 | May 26 | Jun 9 | Jul 12 | Jul 14 – Aug 18 | 35–50 |
| Leeks | May 5 | May 26 | Jun 9 | Jul 12 | Sep 8 – Nov 24 | 90–150 |
| Lentils | May 5 | May 26 | Jun 9 | Jul 12 | Sep 1 – Oct 13 | 80–110 |
| Lettuce | May 5 | May 26 | Jun 9 | Jul 12 | Jul 14 – Sep 22 | 30–60 |
| Lima Beans | — | Jun 16 | — | — | Aug 18 – Sep 29 | 60–90 |
| Loofah | Apr 21 | Jun 16 | Jun 23 | — | Oct 6 – Dec 8 | 100–150 |
| Luffa | Apr 21 | Jun 16 | Jun 23 | — | Sep 22 – Dec 8 | 90–150 |
| Mache | May 5 | May 26 | Jun 9 | Jul 12 | Jul 21 – Aug 25 | 40–60 |
| Malabar Spinach | Apr 21 | Jun 16 | Jun 23 | — | Aug 18 – Sep 15 | 55–70 |
| Melon | May 12 | Jun 16 | Jun 23 | — | Sep 1 – Oct 20 | 70–100 |
| Microgreens | May 5 | May 26 | Jun 9 | Jul 12 | Jun 16 – Jul 14 | 7–21 |
| Mitsuba | May 5 | May 26 | Jun 2 | Jul 12 | Jul 28 – Sep 22 | 50–70 |
| Mizuna | May 5 | May 26 | Jun 9 | Jul 12 | Jul 14 – Aug 11 | 30–45 |
| Mustard Greens | May 5 | May 26 | Jun 9 | Jul 12 | Jul 14 – Sep 15 | 30–50 |
| Napa Cabbage | May 5 | May 26 | Jun 9 | Jul 12 | Aug 4 – Sep 8 | 55–75 |
| New Zealand Spinach | Apr 21 | Jun 16 | Jun 23 | — | Aug 18 – Sep 15 | 55–70 |
| Okra | Apr 21 | Jun 16 | Jun 23 | — | Aug 18 – Oct 13 | 50–65 |
| Onion | May 5 | May 26 | Jun 9 | Jul 12 | Sep 8 – Oct 27 | 90–120 |
| Pac Choi | May 5 | May 26 | Jun 9 | Jul 12 | Jul 21 – Aug 18 | 40–55 |
| Parsnip | — | May 26 | — | Jul 12 | Sep 8 – Oct 20 | 100–130 |
| Patty Pan Squash | May 12 | Jun 16 | Jun 23 | — | Aug 11 – Sep 8 | 45–60 |
| Peas | May 5 | May 26 | Jun 9 | Jul 12 | Aug 4 – Sep 29 | 55–70 |
| Peppers | Apr 7 | Jun 16 | Jun 23 | — | Aug 25 – Nov 3 | 60–90 |
| Pole Beans | Apr 21 | Jun 16 | Jun 23 | — | Aug 18 – Oct 13 | 55–70 |
| Potatoes | Apr 21 | Jun 16 | Jun 23 | — | Sep 1 – Nov 10 | 70–120 |
| Pumpkin | May 12 | Jun 16 | Jun 23 | — | Sep 22 – Nov 10 | 85–120 |
| Purslane | May 5 | May 26 | Jun 9 | Jul 12 | Jul 21 – Aug 25 | 40–60 |
| Radicchio | May 5 | May 26 | Jun 9 | Jul 12 | Aug 11 – Sep 15 | 60–80 |
| Radish | — | May 26 | — | Jul 12 | Jun 23 – Jul 14 | 22–35 |
| Rhubarb | — | — | Jun 30 | — | — | 365–730 |
| Romanesco | May 5 | May 26 | Jun 9 | Jul 12 | Aug 25 – Oct 6 | 75–100 |
| Rutabaga | — | May 26 | — | Jul 12 | Aug 18 – Sep 22 | 80–100 |
| Salsify | — | May 26 | — | Jul 12 | Sep 8 – Oct 20 | 100–130 |
| Savoy Cabbage | May 5 | May 26 | Jun 9 | Jul 12 | Aug 18 – Oct 13 | 70–110 |
| Scallions | May 5 | May 26 | Jun 9 | Jul 12 | Aug 4 – Sep 1 | 50–70 |
| Scarlet Runner Beans | Apr 21 | Jun 16 | Jun 23 | — | Aug 25 – Sep 29 | 60–80 |
| Shallot | May 5 | May 26 | Jun 9 | Jul 12 | Sep 8 – Oct 27 | 90–120 |
| Shiso | Apr 21 | Jun 16 | Jun 23 | — | Aug 18 – Oct 13 | 50–70 |
| Snap Peas | Apr 21 | Jun 16 | Jun 23 | — | Aug 18 – Oct 13 | 55–70 |
| Snow Peas | May 5 | May 26 | Jun 9 | Jul 12 | Aug 4 – Sep 29 | 50–65 |
| Soybeans | — | Jun 16 | — | — | Sep 8 – Nov 3 | 80–120 |
| Spaghetti Squash | May 12 | Jun 16 | Jun 23 | — | Sep 22 – Oct 20 | 85–100 |
| Spinach | May 5 | May 26 | Jun 9 | Jul 12 | Jul 14 – Sep 15 | 35–50 |
| Squash (Summer) | May 12 | Jun 16 | Jun 23 | — | Aug 11 – Oct 13 | 45–65 |
| Squash (Winter) | May 12 | Jun 16 | Jun 23 | — | Sep 15 – Nov 10 | 80–120 |
| Sunchoke | — | — | Jun 23 | — | Oct 13 – Dec 8 | 110–150 |
| Sweet Corn | — | Jun 16 | — | — | Aug 18 – Sep 29 | 60–90 |
| Sweet Potatoes | Apr 21 | Jun 16 | Jun 23 | — | Sep 22 – Nov 10 | 90–120 |
| Tatsoi | May 5 | May 26 | Jun 9 | Jul 12 | Jul 14 – Aug 18 | 35–50 |
| Tomatillo | Apr 21 | Jun 16 | Jun 23 | — | Aug 25 – Nov 3 | 60–85 |
| Tomatoes | Apr 21 | Jun 16 | Jun 23 | — | Aug 25 – Nov 3 | 60–85 |
| Turnip | — | May 26 | — | Jul 12 | Jul 7 – Aug 11 | 40–60 |
| Watercress | May 5 | May 26 | Jun 9 | Jul 12 | Jul 21 – Aug 25 | 40–60 |
| Watermelon | May 12 | Jun 16 | Jun 23 | — | Sep 1 – Oct 20 | 70–100 |
| Wax Beans | — | Jun 16 | — | — | Aug 11 – Oct 6 | 50–65 |
| Winter Melon | Apr 21 | Jun 16 | Jun 23 | — | Sep 22 – Nov 10 | 90–120 |
| Yard Long Beans | Apr 21 | Jun 16 | Jun 23 | — | Aug 18 – Sep 29 | 55–80 |
| Zucchini | May 12 | Jun 16 | Jun 23 | — | Aug 11 – Oct 6 | 45–60 |
🍓 Fruits to Grow in Owyhee County
31 fruits that grow well in Zone 7a with planting dates for Owyhee County.
Show all 31 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Alpine Strawberries | — | — | Jun 30 | — | Sep 29 – Jan 12 | 90–180 |
| Aronia | — | — | Jun 30 | — | — | 730–1095 |
| Blackberries | — | — | Jun 30 | — | — | 365–730 |
| Blueberries | — | — | Jun 30 | — | — | 730–1095 |
| Boysenberries | — | — | Jun 30 | — | — | 365–730 |
| Cantaloupe | — | — | Jun 30 | — | Sep 8 – Oct 13 | 70–90 |
| Che Fruit | — | — | Jun 30 | — | — | 1095–1825 |
| Cranberries | — | — | Jun 30 | — | — | 730–1095 |
| Currants | — | — | Jun 30 | — | — | 730–1095 |
| Elderberries | — | — | Jun 30 | — | — | 730–1095 |
| Figs | — | — | Jun 30 | — | — | 730–1825 |
| Goji Berries | — | — | Jun 30 | — | — | 730–1095 |
| Gooseberries | — | — | Jun 30 | — | — | 730–1095 |
| Grapes | — | — | Jun 30 | — | — | 730–1095 |
| Ground Cherry | — | — | Jun 30 | — | Sep 8 – Nov 3 | 65–80 |
| Hardy Kiwi | — | — | Jun 30 | — | — | 1095–1825 |
| Haskaps | — | — | Jun 30 | — | — | 730–1095 |
| Honeydew | — | — | Jun 30 | — | Sep 22 – Nov 3 | 80–110 |
| Jostaberry | — | — | Jun 30 | — | — | 730–1095 |
| Kiwi | — | — | Jun 30 | — | — | 1095–1825 |
| Lingonberries | — | — | Jun 30 | — | — | 730–1095 |
| Loquat | — | — | Jun 30 | — | — | 730–1825 |
| Medlar | — | — | Jun 30 | — | — | 1095–1825 |
| Mulberries | — | — | Jun 30 | — | — | 730–1825 |
| Pawpaw | — | — | Jun 30 | — | — | 1095–2555 |
| Persimmon | — | — | Jun 30 | — | — | 1095–2555 |
| Pomegranate | — | — | Jun 30 | — | — | 730–1095 |
| Quince | — | — | Jun 30 | — | — | 1095–1825 |
| Raspberries | — | — | Jun 30 | — | — | 365–730 |
| Serviceberries | — | — | Jun 30 | — | — | 730–1095 |
| Strawberries | — | — | Jun 30 | — | Sep 29 – Feb 9 | 90–365 |
🌿 Herbs to Grow in Owyhee County
36 herbs that grow well in Zone 7a with planting dates for Owyhee County.
Show all 36 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Angelica | May 5 | May 26 | Jun 2 | Jul 12 | — | 365–730 |
| Anise | May 5 | May 26 | Jun 2 | Jul 12 | Sep 1 – Nov 17 | 90–120 |
| Basil | Apr 21 | Jun 16 | Jun 23 | — | Aug 18 – Oct 20 | 50–75 |
| Bee Balm | — | — | Jun 16 | — | Sep 15 – Dec 1 | 90–120 |
| Borage | May 5 | May 26 | Jun 2 | Jul 12 | Jul 28 – Sep 15 | 50–60 |
| Caraway | May 5 | May 26 | Jun 2 | Jul 12 | — | 365–450 |
| Catnip | — | — | Jun 16 | — | Aug 18 – Oct 20 | 60–80 |
| Chamomile | May 5 | May 26 | Jun 2 | Jul 12 | Aug 4 – Oct 13 | 60–90 |
| Chervil | May 5 | May 26 | Jun 2 | Jul 12 | Jul 14 – Sep 15 | 40–60 |
| Chives | — | — | Jun 16 | — | Aug 18 – Oct 27 | 60–90 |
| Cilantro | May 5 | May 26 | Jun 2 | Jul 12 | Jul 14 – Sep 15 | 40–60 |
| Comfrey | — | — | Jun 16 | — | Aug 18 – Oct 27 | 60–90 |
| Cumin | May 5 | May 26 | Jun 2 | Jul 12 | Sep 15 – Nov 17 | 100–120 |
| Dill | May 5 | May 26 | Jun 2 | Jul 12 | Jul 14 – Sep 15 | 40–60 |
| Epazote | Apr 21 | Jun 16 | Jun 23 | — | Aug 11 – Oct 6 | 45–60 |
| Fennel (herb) | May 5 | May 26 | Jun 2 | Jul 12 | Aug 4 – Oct 13 | 60–90 |
| Feverfew | — | — | Jun 16 | — | Sep 15 – Dec 1 | 90–120 |
| Garlic Chives | — | — | Jun 16 | — | Aug 18 – Oct 27 | 60–90 |
| Horehound | — | — | Jun 16 | — | Sep 1 – Oct 27 | 75–90 |
| Hyssop | — | — | Jun 16 | — | Aug 25 – Oct 27 | 70–90 |
| Lemon Balm | — | — | Jun 16 | — | Aug 18 – Oct 6 | 60–70 |
| Lemon Thyme | — | — | Jun 16 | — | Aug 25 – Oct 27 | 70–90 |
| Lovage | — | — | Jun 16 | — | Aug 25 – Oct 27 | 70–90 |
| Marjoram | — | — | Jun 16 | — | Aug 18 – Oct 27 | 60–90 |
| Mint | — | — | Jun 16 | — | Aug 18 – Oct 27 | 60–90 |
| Oregano | — | — | Jun 16 | — | Aug 18 – Oct 27 | 60–90 |
| Parsley | May 5 | May 26 | Jun 2 | Jul 12 | Aug 4 – Oct 6 | 60–80 |
| Rosemary | — | — | Jun 16 | — | Sep 8 – Jan 26 | 80–180 |
| Rue | — | — | Jun 16 | — | Aug 25 – Oct 27 | 70–90 |
| Sage | — | — | Jun 16 | — | Sep 1 – Oct 27 | 75–90 |
| Savory | — | — | Jun 16 | — | Aug 11 – Oct 6 | 50–70 |
| Sorrel | May 5 | May 26 | Jun 2 | Jul 12 | Jul 14 – Sep 15 | 40–60 |
| Tarragon | — | — | Jun 16 | — | Aug 18 – Oct 27 | 60–90 |
| Thai Basil | Apr 21 | Jun 16 | Jun 23 | — | Aug 18 – Oct 20 | 50–75 |
| Thyme | — | — | Jun 16 | — | Aug 25 – Oct 27 | 70–90 |
| Valerian | — | — | Jun 16 | — | Oct 20 – Jan 26 | 120–180 |
🌸 Flowers to Grow in Owyhee County
53 flowers that grow well in Zone 7a with planting dates for Owyhee County.
Show all 53 flowers with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Bloom | Days to Maturity |
|---|---|---|---|---|---|---|
| Ageratum | Apr 28 | Jun 9 | Jun 9 | — | Aug 4 – Nov 24 | 60–75 |
| Alliums | — | — | — | Aug 16 | Sep 13 – Oct 4 | 28–42 |
| Anemones | — | — | — | Jul 26 | Aug 9 – Sep 6 | 90–120 |
| Astilbe | Apr 7 | — | Jun 16 | — | Aug 25 – Oct 20 | 70–100 |
| Bachelor's Button | Apr 28 | May 5 | Jun 9 | Jul 26 | Aug 11 – Nov 10 | 60–90 |
| Begonias | Mar 31 | — | Jun 9 | — | Aug 18 – Dec 8 | 70–90 |
| Black-eyed Susan | Apr 7 | Jun 9 | Jun 16 | — | Aug 25 – Dec 29 | 60–80 |
| Bleeding Hearts | Apr 7 | — | Jun 16 | — | Aug 4 – Sep 8 | 60–90 |
| Calendula | Apr 28 | May 5 | Jun 9 | Jul 26 | Jul 28 – Nov 10 | 50–70 |
| California Poppy | — | May 12 | — | Jul 26 | Jul 21 – Sep 29 | 60–90 |
| Celosia | May 12 | Jun 9 | Jun 9 | — | Aug 11 – Dec 8 | 60–90 |
| Columbine | Apr 14 | Jun 16 | Jun 16 | — | Aug 4 – Sep 8 | 70–100 |
| Coreopsis | Apr 7 | Jun 9 | Jun 16 | — | Aug 18 – Dec 29 | 60–80 |
| Cosmos | May 12 | Jun 9 | Jun 9 | — | Aug 18 – Dec 8 | 60–90 |
| Crocus | — | — | — | Aug 16 | Jul 12 – Aug 2 | 10–20 |
| Daffodils | — | — | — | Aug 16 | Jul 19 – Aug 9 | 20–40 |
| Dahlias | May 12 | Jun 16 | Jun 16 | — | Aug 25 – Dec 29 | 70–120 |
| Daylily | Apr 7 | — | Jun 16 | — | Aug 25 – Dec 29 | 60–90 |
| Dianthus | Apr 14 | May 5 | May 19 | — | Jul 7 – Oct 6 | 60–80 |
| Echinacea (Purple Coneflower) | Apr 7 | Jun 16 | Jun 16 | — | Sep 1 – Dec 29 | 70–90 |
| Foxglove | Apr 14 | Jun 16 | Jun 16 | — | Aug 4 – Sep 8 | 80–120 |
| Gaillardia (Blanket Flower) | Apr 21 | Jun 16 | Jun 16 | — | Aug 25 – Jan 12 | 70–100 |
| Geraniums | Mar 31 | — | Jun 9 | — | Aug 18 – Dec 8 | 70–100 |
| Gladiolus | — | Jun 9 | Jun 9 | — | Aug 18 – Dec 22 | 70–100 |
| Hostas | Mar 31 | — | Jun 16 | — | Aug 25 – Dec 29 | 60–90 |
| Hyacinths | — | — | — | Aug 16 | Aug 9 – Aug 30 | 14–28 |
| Hydrangeas | Mar 31 | — | Jun 16 | — | Aug 25 – Dec 15 | 90–150 |
| Impatiens | Apr 14 | — | Jun 16 | — | Aug 25 – Dec 15 | 60–75 |
| Irises | — | Division | Jun 16 | — | Aug 4 – Sep 8 | 60–100 |
| Larkspur | — | May 12 | — | Jul 12 | Jul 21 – Sep 29 | 60–90 |
| Lavender | Apr 7 | — | Jun 23 | — | Sep 1 – Nov 10 | 90–120 |
| Lilies | — | Division | Jun 16 | — | Aug 25 – Dec 15 | 70–120 |
| Lobelia | Apr 7 | — | May 19 | — | Jul 14 – Oct 6 | 70–80 |
| Lupine | Apr 14 | Jun 16 | Jun 16 | — | Aug 4 – Sep 8 | 75–100 |
| Marigolds | Apr 28 | Jun 9 | Jun 9 | — | Aug 4 – Nov 10 | 50–70 |
| Nasturtium | May 12 | Jun 9 | Jun 9 | — | Aug 4 – Dec 8 | 55–65 |
| Pansy | Mar 31 | — | Jun 9 | Jul 12 | Aug 4 – Oct 13 | 70–90 |
| Peonies | — | Division | Jun 16 | — | Aug 11 – Sep 15 | 90–120 |
| Petunia | Apr 14 | — | Jun 16 | — | Aug 25 – Dec 15 | 70–90 |
| Phlox | Apr 7 | Jun 16 | Jun 16 | — | Aug 25 – Nov 17 | 80–110 |
| Portulaca | May 12 | Jun 9 | Jun 9 | — | Jul 28 – Nov 24 | 50–70 |
| Ranunculus | — | — | — | Jul 26 | Aug 23 – Sep 20 | 90–120 |
| Roses | Mar 31 | — | Jun 16 | — | Aug 25 – Dec 29 | 90–180 |
| Salvia | Apr 14 | — | Jun 9 | — | Aug 18 – Dec 8 | 70–90 |
| Sedum (Stonecrop) | Apr 7 | — | Jun 16 | — | Oct 6 – Dec 29 | 60–90 |
| Snapdragon | Mar 31 | May 12 | Jun 9 | Jul 26 | Aug 18 – Nov 10 | 70–100 |
| Sunflower | May 19 | Jun 9 | Jun 9 | — | Sep 1 – Dec 8 | 70–100 |
| Sweet Alyssum | Apr 28 | May 12 | Jun 9 | Aug 9 | Jul 21 – Oct 13 | 45–60 |
| Sweet Pea | — | May 5 | — | Jul 26 | Jul 14 – Oct 6 | 65–85 |
| Tulips | — | — | — | Aug 16 | Aug 2 – Aug 23 | 15–30 |
| Vinca (Annual) | Mar 31 | — | Jun 9 | — | Aug 18 – Dec 8 | 70–90 |
| Yarrow | Apr 7 | Jun 9 | Jun 16 | — | Aug 18 – Dec 29 | 60–90 |
| Zinnia | May 12 | Jun 9 | Jun 9 | — | Aug 18 – Dec 8 | 60–70 |
Monthly Planting Guide for Owyhee County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Owyhee County.
Frequently Asked Questions
What planting zone is Owyhee County, ID?
Owyhee 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 Owyhee County, ID?
Based on 31 years of NOAA weather station data, the median last spring frost in Owyhee County falls around June 9. In 8 out of 10 years, last frost lands between May 8 and June 19 — a 41-day window of variability. Use June 19 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in Owyhee County, ID?
The median first fall frost in Owyhee County arrives around September 20. In cold years it can arrive as early as September 1; in mild years as late as October 17. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Owyhee County?
Owyhee 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 5.81 days per decade.
What is the soil like in Owyhee County for gardening?
Owyhee County has predominantly Loam soil with a pH range of 6.3–7.8 and Well Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.
What is grown commercially in Owyhee County?
Owyhee County has commercial agriculture that includes Potatoes, Hay, Wheat, Cattle. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is Owyhee County a good location for home gardening?
Owyhee County scores 32/100 (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 Owyhee County Garden Planner — Free
A 22-page printable planner built for Owyhee 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