Power County, ID — Planting Guide
July in Power County, Idaho — your action list
July is a pivotal month for Power County, Idaho gardens. Focus on these tasks first and you'll set up the rest of the season for success.
-
Sow peppers, pole beans, and tomatoes in trays indoors
Give them 6–8 weeks indoors before the last frost and you'll transplant into warm soil with seedlings that are already leaping.
-
Start harvesting basil, carrots, and cucumber
Don't tug. Use scissors or pruners for clean cuts — torn stems invite disease.
-
Plant your fall garden: carrots, kale, and lettuce
Count back from your first frost (September 30) — these need to mature before the cold arrives.
Coming up in August — start thinking about
- First harvests: basil, carrots, and cucumber
- Fall sowing: alliums, bachelor's button, and crocus
Power County is in USDA Zone 6a. The average last spring frost is May 11 and the first fall frost is September 30, giving you a growing season of approximately 142 days.
At an elevation of 6,609 ft, Power County receives approximately 14 in of rainfall annually. Summer highs average 87°F with winter lows around 11°F. The predominant soil type is Loam.
Based on 29 years of NOAA climate station data, the last frost date here varies by 43 days year to year — ranging from April 29 in warm years to June 11 in cold years. The growing season is trending shorter by about 0.93 days per decade. Power County scores 39/100 (Challenging) on the Microclimate Index.
🌡️ Zone
6a (-10°F to -5°F min)
❄️ Last Frost
May 11
🍂 First Frost
September 30
📅 Growing Season
142 days
⛰️ Elevation
6,609 ft
🌧️ Annual Rainfall
14 in
Monthly Watering Calendar for Power 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: The 1-inch-per-week rule applies to most vegetable crops. Power County averages 14" a year — divide by 52 and compare to that 1" target. Some months are above, some below; that's where the calendar earns its keep.
View detailed monthly data
| Month | Avg Rainfall | Rainy Days | Extra Water Needed | Watering Effort |
|---|---|---|---|---|
| Jan | 1 in | 7 days | — | None |
| Feb | 0.9 in | 6 days | — | None |
| Mar | 1.2 in | 7 days | — | None |
| Apr | 1.4 in | 8 days | 2.9 in | High |
| May | 1.7 in | 7 days | 2.6 in | High |
| Jun | 0.9 in | 4 days | 3.4 in | Critical |
| Jul | 1.4 in | 5 days | 2.9 in | High |
| Aug | 1.5 in | 7 days | 2.8 in | High |
| Sep | 1.2 in | 5 days | 3.1 in | Critical |
| Oct | 1.3 in | 5 days | 3 in | High |
| Nov | 0.8 in | 5 days | — | None |
| Dec | 0.8 in | 7 days | — | None |
Annual total: 14.1 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.
Power County Soil Profile
Soil Type
Loam
Soil pH
6.6-8.2
Drainage
Well Drained
Frost Risk Probability
Based on 29 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 11 | Oct 18 | 129 days |
| Cautious | May 23 | Oct 8 | 138 days |
| Average year | May 11 | Sep 30 | 142 days |
| Optimistic | May 2 | Sep 21 | 142 days |
| Aggressive (risky) | Apr 29 | Sep 6 | 130 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.
Slightly — seasons are trending a bit shorter (0.9 days/decade). Stay conservative with planting dates.
Gardening Difficulty Score
Power County has challenging growing conditions. Season extension and careful variety selection are essential.
Local Gardening Help in Power 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 Power County's climate and soil.
County Extension Office
Power 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 Power County
Finding local nurseries & garden centers in Power County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Power 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 Power County ID" or "garden center Power 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 Power County ID" or check your extension office and local parks department. Facebook groups like "Power 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 in Power County
Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.
Why this matters: Day length is the trigger that tells lettuce, spinach, and cilantro to bolt. In Power County, knowing when that day-length threshold arrives helps you plant a final round in time to harvest before it bolts.
Longest Day
15.1 hours
Summer solstice daylight
Shortest Day
8.9 hours
Winter solstice daylight
Peak Sun Hours
10.9 hr/day peak (summer)
Peak sun hours (green dashed line below) account for cloud cover — this is the usable direct sunlight your garden actually receives. Most vegetables need 6+ peak sun hours.
Onion tip: Your long summer days (14+ hours) support long-day onion varieties like Walla Walla, Sweet Spanish, and Ailsa Craig.
View detailed monthly data
| Month | Daylight Hours | Peak Sun Hours | Day Length |
|---|---|---|---|
| January | 9.2 hr | 5.1 hr | Short day |
| February | 10.3 hr | 6.2 hr | Short day |
| March | 11.7 hr | 7.4 hr | Short day |
| April | 13.2 hr | 7.8 hr | Neutral |
| May | 14.4 hr | 8.8 hr | Long day |
| June | 15.1 hr | 10.9 hr | Long day |
| July | 14.8 hr | 10.4 hr | Long day |
| August | 13.7 hr | 9.7 hr | Neutral |
| September | 12.3 hr | 8.9 hr | Neutral |
| October | 10.8 hr | 7 hr | Short day |
| November | 9.5 hr | 5.5 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 Power County
Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.
Why it matters: Soil heats slower than air in spring and cools slower in fall. That's why "warm" April air doesn't mean "plant tomatoes" — soil still trails by weeks. Power County's monthly soil curve makes the lag visible.
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
3 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 | 4°F | 12°F | ❄️ Dormant | ~36 weeks |
| Feb | 6°F | 11°F | ❄️ Dormant | ~36 weeks |
| Mar | 12°F | 15°F | ❄️ Dormant | ~36 weeks |
| Apr | 26°F | 26°F | ❄️ Dormant | ~36 weeks |
| May | 40°F | 35°F | ❄️ Dormant | ~36 weeks |
| Jun | 49°F | 44°F | 🐢 Slow | ~24 weeks |
| Jul | 59°F | 50°F | ♻️ Active | ~14 weeks |
| Aug | 59°F | 54°F | ♻️ Active | ~14 weeks |
| Sep | 52°F | 49°F | ♻️ Active | ~14 weeks |
| Oct | 38°F | 39°F | ❄️ Dormant | ~36 weeks |
| Nov | 22°F | 29°F | ❄️ Dormant | ~36 weeks |
| Dec | 10°F | 20°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 Power County
Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.
Why it matters: Pest pressure scales with warmth and humidity. Hot humid Power County sees year-round bugs and fungal disease; cold dry regions see almost none. A high pest score means crop rotation, resistant varieties, and a weekly pest-watch routine from day one.
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 | Moderate | May, Jun, Jul, Aug |
| Japanese beetles | Moderate | Jun, Jul, Aug |
| Squash bugs | Low | Jun, Jul, Aug |
| Tomato hornworms | Low | Jul, Aug |
| Cabbage loopers | Moderate | May, Jun, Jul, Aug |
| Slugs | Low | Apr, May, Jun |
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 Power County
Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with planting dates calibrated for your area.
Why it matters: A fall-planted cover crop in Power 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 | May 16 | Aug 5 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Sorghum-sudan grass | May 19 | Jul 22 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | Apr 15 | Jul 29 | ✓ 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 29 | Sep 9 | — | Deep roots break compaction, attract pollinators and beneficial insects |
Fall Cover Crops (6 options) — Plant after harvest to protect soil over winter
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Austrian winter peas | Aug 5 | Apr 20 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Daikon radish | Aug 15 | Apr 27 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Jul 15 | Apr 20 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Aug 21 | Apr 20 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Jun 25 | Apr 20 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Jul 2 | Apr 27 | — | Erosion control, weed suppression, good biomass |
Wind & Microclimate in Power County
What this means for you: Plants lose water through tiny leaf pores. Wind accelerates that loss dramatically — a 15 mph day can double a calm day's irrigation need. Power County's 11.6 mph background wind is something to design around, not against. Windbreaks made of perennial shrubs save more water than any drip system.
Wind dries soil, stresses plants, and affects frost patterns. Understanding your exposure helps with garden placement.
Seasonal Wind Speed
Spring: 15 mph Summer: 12 mph
Fall: 14 mph Winter: 15 mph
Prevailing wind: W. Windy area — plant a windbreak hedge on the W side of your garden.
Windbreak Benefit
6.9/10
Moderately beneficial — a simple fence or trellis can protect delicate crops from wind stress.
Frost Pocket Risk
High
Hilly terrain with 1,854 ft of elevation range — cold air pools in low spots. Avoid planting frost-sensitive crops in valleys.
Rainwater Harvesting in Power County
How much water you can collect, when to collect it, and what size system you need for your garden.
Quick context: Captured rainwater is better for plants than tap water (no chlorine), works during water restrictions, and reduces stormwater runoff. Power County's 14" annual rainfall is a meaningful pool — most homes could capture 10,000+ gallons a year with a decent system.
Annual Collection
7,027 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, Jun, 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 14.1 inches of rain per year
- A 1,000 sq ft roof can collect roughly 7,027 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 Power County
Soil Type
Loam
Soil pH 6.6–8.2 · 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
142-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 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 Power County
107 vegetables that grow well in Zone 6a with planting dates for Power County.
Show all 107 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Acorn Squash | Apr 6 | May 18 | May 25 | — | Aug 17 – Sep 21 | 80–100 |
| Amaranth | Mar 16 | May 18 | May 25 | — | Aug 24 – Oct 12 | 90–120 |
| Arugula | Apr 6 | Apr 27 | May 11 | Jul 22 | Jun 15 – Aug 17 | 30–50 |
| Asparagus | — | — | May 25 | — | — | 730–1095 |
| Beets | — | Apr 27 | — | Jul 22 | Jun 22 – Jul 20 | 50–70 |
| Belgian Endive | Apr 6 | Apr 27 | May 11 | Jul 22 | Aug 31 – Oct 26 | 110–150 |
| Bitter Melon | Mar 16 | May 18 | May 25 | — | Jul 27 – Sep 7 | 60–90 |
| Black Beans | — | May 18 | — | — | Aug 17 – Oct 5 | 90–120 |
| Bok Choy | Apr 6 | Apr 27 | May 11 | Jul 22 | Jun 22 – Jul 27 | 40–60 |
| Broccoli | Apr 6 | Apr 27 | May 11 | Jul 22 | Jul 13 – Aug 24 | 60–90 |
| Broccoli Rabe | Apr 6 | Apr 27 | May 11 | Jul 22 | Jun 22 – Jul 27 | 40–60 |
| Brussels Sprouts | Apr 6 | Apr 27 | May 11 | Jul 22 | Aug 10 – Oct 5 | 90–130 |
| Butternut Squash | Apr 6 | May 18 | May 25 | — | Aug 24 – Sep 28 | 85–110 |
| Cabbage | Apr 6 | Apr 27 | May 11 | Jul 22 | Jul 13 – Sep 7 | 60–100 |
| Calabash | Mar 16 | May 18 | May 25 | — | Aug 17 – Oct 12 | 80–120 |
| Carrots | — | Apr 27 | — | Jul 22 | Jun 29 – Aug 3 | 60–80 |
| Cauliflower | Apr 6 | Apr 27 | May 11 | Jul 22 | Jul 6 – Sep 7 | 55–100 |
| Celeriac | Apr 6 | Apr 27 | May 11 | Jul 22 | Aug 24 – Sep 28 | 100–120 |
| Celery | Apr 6 | Apr 27 | May 11 | Jul 22 | Aug 3 – Sep 28 | 80–120 |
| Celtuce | Apr 6 | Apr 27 | May 11 | Jul 22 | Jul 13 – Aug 24 | 60–90 |
| Chard | Apr 6 | Apr 27 | May 11 | Jul 22 | Jul 6 – Aug 24 | 50–60 |
| Chickpeas | Apr 6 | Apr 27 | May 11 | Jul 22 | Aug 3 – Sep 14 | 80–110 |
| Chicory | Apr 6 | Apr 27 | May 11 | Jul 22 | Jul 13 – Aug 24 | 60–85 |
| Chinese Cabbage | Apr 6 | Apr 27 | May 11 | Jul 22 | Jul 6 – Aug 3 | 50–70 |
| Christmas Lima Beans | Mar 16 | May 18 | May 25 | — | Aug 17 – Sep 21 | 80–100 |
| Collard Greens | Apr 6 | Apr 27 | May 11 | Jul 22 | Jul 6 – Sep 7 | 55–75 |
| Corn | — | May 18 | — | — | Jul 20 – Sep 14 | 60–100 |
| Cowpeas | — | May 18 | — | — | Jul 20 – Aug 31 | 60–90 |
| Cress | Apr 6 | Apr 27 | May 11 | Jul 22 | May 25 – Jun 15 | 14–21 |
| Crookneck Squash | Apr 6 | May 18 | May 25 | — | Jul 13 – Aug 10 | 45–60 |
| Crosne | — | Apr 27 | — | Jul 22 | Sep 28 – Nov 9 | 150–200 |
| Cucumber | Apr 6 | May 18 | May 25 | — | Jul 20 – Sep 14 | 50–70 |
| Daikon | — | Apr 27 | — | Jul 22 | Jun 22 – Jul 20 | 50–70 |
| Delicata Squash | Apr 6 | May 18 | May 25 | — | Aug 17 – Sep 21 | 80–100 |
| Edamame | — | May 18 | — | — | Aug 3 – Sep 14 | 75–100 |
| Eggplant | Mar 2 | May 18 | May 25 | — | Aug 3 – Oct 5 | 65–85 |
| Endive | Apr 6 | Apr 27 | May 11 | Jul 22 | Jun 29 – Aug 3 | 45–65 |
| Escarole | Apr 6 | Apr 27 | May 11 | Jul 22 | Jul 6 – Aug 3 | 50–70 |
| Fava Beans | Apr 6 | Apr 27 | May 11 | Jul 22 | Jul 27 – Sep 7 | 75–100 |
| Fennel | Mar 16 | May 18 | May 25 | — | Jul 27 – Sep 7 | 60–90 |
| Garlic | — | — | — | Aug 19 | Nov 18 – Mar 3 | 90–240 |
| Green Beans | — | May 18 | — | — | Jul 13 – Sep 7 | 50–65 |
| Horseradish | — | — | May 25 | — | Sep 28 – Dec 7 | 120–180 |
| Hot Peppers | Mar 2 | May 18 | May 25 | — | Aug 3 – Nov 9 | 70–120 |
| Hubbard Squash | Apr 6 | May 18 | May 25 | — | Sep 7 – Oct 12 | 100–120 |
| Kabocha | Apr 6 | May 18 | May 25 | — | Aug 24 – Sep 21 | 85–100 |
| Kai Lan | Apr 6 | Apr 27 | May 11 | Jul 22 | Jun 29 – Jul 27 | 45–60 |
| Kale | Apr 6 | Apr 27 | May 11 | Jul 22 | Jul 6 – Aug 31 | 50–70 |
| Kidney Beans | — | May 18 | — | — | Aug 17 – Sep 21 | 85–110 |
| Kohlrabi | Apr 6 | Apr 27 | May 11 | Jul 22 | Jun 29 – Aug 3 | 45–65 |
| Komatsuna | Apr 6 | Apr 27 | May 11 | Jul 22 | Jun 15 – Jul 20 | 35–50 |
| Leeks | Apr 6 | Apr 27 | May 11 | Jul 22 | Aug 10 – Oct 26 | 90–150 |
| Lentils | Apr 6 | Apr 27 | May 11 | Jul 22 | Aug 3 – Sep 14 | 80–110 |
| Lettuce | Apr 6 | Apr 27 | May 11 | Jul 22 | Jun 15 – Aug 24 | 30–60 |
| Lima Beans | — | May 18 | — | — | Jul 20 – Aug 31 | 60–90 |
| Loofah | Mar 16 | May 18 | May 25 | — | Sep 7 – Nov 9 | 100–150 |
| Luffa | Mar 16 | May 18 | May 25 | — | Aug 24 – Nov 9 | 90–150 |
| Mache | Apr 6 | Apr 27 | May 11 | Jul 22 | Jun 22 – Jul 27 | 40–60 |
| Melon | Apr 6 | May 18 | May 25 | — | Aug 3 – Sep 21 | 70–100 |
| Microgreens | Apr 6 | Apr 27 | May 11 | Jul 22 | May 18 – Jun 15 | 7–21 |
| Mitsuba | Apr 6 | Apr 27 | May 4 | Jul 22 | Jun 29 – Aug 24 | 50–70 |
| Mizuna | Apr 6 | Apr 27 | May 11 | Jul 22 | Jun 15 – Jul 13 | 30–45 |
| Mustard Greens | Apr 6 | Apr 27 | May 11 | Jul 22 | Jun 15 – Aug 17 | 30–50 |
| Napa Cabbage | Apr 6 | Apr 27 | May 11 | Jul 22 | Jul 6 – Aug 10 | 55–75 |
| New Zealand Spinach | Mar 16 | May 18 | May 25 | — | Jul 20 – Aug 17 | 55–70 |
| Okra | Mar 16 | May 18 | May 25 | — | Jul 20 – Sep 14 | 50–65 |
| Onion | Apr 6 | Apr 27 | May 11 | Jul 22 | Aug 10 – Sep 28 | 90–120 |
| Pac Choi | Apr 6 | Apr 27 | May 11 | Jul 22 | Jun 22 – Jul 20 | 40–55 |
| Parsnip | — | Apr 27 | — | Jul 22 | Aug 10 – Sep 21 | 100–130 |
| Patty Pan Squash | Apr 6 | May 18 | May 25 | — | Jul 13 – Aug 10 | 45–60 |
| Peas | Apr 6 | Apr 27 | May 11 | Jul 22 | Jul 6 – Aug 31 | 55–70 |
| Peppers | Mar 2 | May 18 | May 25 | — | Jul 27 – Oct 5 | 60–90 |
| Pole Beans | Mar 16 | May 18 | May 25 | — | Jul 20 – Sep 14 | 55–70 |
| Potatoes | Mar 16 | May 18 | May 25 | — | Aug 3 – Oct 12 | 70–120 |
| Pumpkin | Apr 6 | May 18 | May 25 | — | Aug 24 – Oct 12 | 85–120 |
| Purslane | Apr 6 | Apr 27 | May 11 | Jul 22 | Jun 22 – Jul 27 | 40–60 |
| Radicchio | Apr 6 | Apr 27 | May 11 | Jul 22 | Jul 13 – Aug 17 | 60–80 |
| Radish | — | Apr 27 | — | Jul 22 | May 25 – Jun 15 | 22–35 |
| Rhubarb | — | — | Jun 1 | — | — | 365–730 |
| Romanesco | Apr 6 | Apr 27 | May 11 | Jul 22 | Jul 27 – Sep 7 | 75–100 |
| Rutabaga | — | Apr 27 | — | Jul 22 | Jul 20 – Aug 24 | 80–100 |
| Salsify | — | Apr 27 | — | Jul 22 | Aug 10 – Sep 21 | 100–130 |
| Savoy Cabbage | Apr 6 | Apr 27 | May 11 | Jul 22 | Jul 20 – Sep 14 | 70–110 |
| Scallions | Apr 6 | Apr 27 | May 11 | Jul 22 | Jul 6 – Aug 3 | 50–70 |
| Scarlet Runner Beans | Mar 16 | May 18 | May 25 | — | Jul 27 – Aug 31 | 60–80 |
| Shallot | Apr 6 | Apr 27 | May 11 | Jul 22 | Aug 10 – Sep 28 | 90–120 |
| Shiso | Mar 23 | May 18 | May 25 | — | Jul 20 – Sep 14 | 50–70 |
| Snap Peas | Mar 16 | May 18 | May 25 | — | Jul 20 – Sep 14 | 55–70 |
| Snow Peas | Apr 6 | Apr 27 | May 11 | Jul 22 | Jul 6 – Aug 31 | 50–65 |
| Soybeans | — | May 18 | — | — | Aug 10 – Oct 5 | 80–120 |
| Spaghetti Squash | Apr 6 | May 18 | May 25 | — | Aug 24 – Sep 21 | 85–100 |
| Spinach | Apr 6 | Apr 27 | May 11 | Jul 22 | Jun 15 – Aug 17 | 35–50 |
| Squash (Summer) | Apr 6 | May 18 | May 25 | — | Jul 13 – Sep 14 | 45–65 |
| Squash (Winter) | Apr 6 | May 18 | May 25 | — | Aug 17 – Oct 12 | 80–120 |
| Sunchoke | — | — | May 25 | — | Sep 14 – Nov 9 | 110–150 |
| Sweet Corn | — | May 18 | — | — | Jul 20 – Aug 31 | 60–90 |
| Sweet Potatoes | Mar 16 | May 18 | May 25 | — | Aug 24 – Oct 12 | 90–120 |
| Tatsoi | Apr 6 | Apr 27 | May 11 | Jul 22 | Jun 15 – Jul 20 | 35–50 |
| Tomatillo | Mar 16 | May 18 | May 25 | — | Jul 27 – Oct 5 | 60–85 |
| Tomatoes | Mar 16 | May 18 | May 25 | — | Jul 27 – Oct 5 | 60–85 |
| Turnip | — | Apr 27 | — | Jul 22 | Jun 8 – Jul 13 | 40–60 |
| Watercress | Apr 6 | Apr 27 | May 11 | Jul 22 | Jun 22 – Jul 27 | 40–60 |
| Watermelon | Apr 6 | May 18 | May 25 | — | Aug 3 – Sep 21 | 70–100 |
| Wax Beans | — | May 18 | — | — | Jul 13 – Sep 7 | 50–65 |
| Winter Melon | Mar 16 | May 18 | May 25 | — | Aug 24 – Oct 12 | 90–120 |
| Yard Long Beans | Mar 16 | May 18 | May 25 | — | Jul 20 – Aug 31 | 55–80 |
| Zucchini | Apr 6 | May 18 | May 25 | — | Jul 13 – Sep 7 | 45–60 |
🍓 Fruits to Grow in Power County
27 fruits that grow well in Zone 6a with planting dates for Power County.
Show all 27 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Alpine Strawberries | — | — | Jun 1 | — | Aug 31 – Dec 14 | 90–180 |
| Aronia | — | — | Jun 1 | — | — | 730–1095 |
| Blackberries | — | — | Jun 1 | — | — | 365–730 |
| Blueberries | — | — | Jun 1 | — | — | 730–1095 |
| Boysenberries | — | — | Jun 1 | — | — | 365–730 |
| Cantaloupe | — | — | Jun 1 | — | Aug 10 – Sep 14 | 70–90 |
| Che Fruit | — | — | Jun 1 | — | — | 1095–1825 |
| Cranberries | — | — | Jun 1 | — | — | 730–1095 |
| Currants | — | — | Jun 1 | — | — | 730–1095 |
| Elderberries | — | — | Jun 1 | — | — | 730–1095 |
| Goji Berries | — | — | Jun 1 | — | — | 730–1095 |
| Gooseberries | — | — | Jun 1 | — | — | 730–1095 |
| Grapes | — | — | Jun 1 | — | — | 730–1095 |
| Ground Cherry | — | — | Jun 1 | — | Aug 10 – Oct 5 | 65–80 |
| Hardy Kiwi | — | — | Jun 1 | — | — | 1095–1825 |
| Haskaps | — | — | Jun 1 | — | — | 730–1095 |
| Honeydew | — | — | Jun 1 | — | Aug 24 – Oct 5 | 80–110 |
| Jostaberry | — | — | Jun 1 | — | — | 730–1095 |
| Lingonberries | — | — | Jun 1 | — | — | 730–1095 |
| Medlar | — | — | Jun 1 | — | — | 1095–1825 |
| Mulberries | — | — | Jun 1 | — | — | 730–1825 |
| Pawpaw | — | — | Jun 1 | — | — | 1095–2555 |
| Persimmon | — | — | Jun 1 | — | — | 1095–2555 |
| Quince | — | — | Jun 1 | — | — | 1095–1825 |
| Raspberries | — | — | Jun 1 | — | — | 365–730 |
| Serviceberries | — | — | Jun 1 | — | — | 730–1095 |
| Strawberries | — | — | Jun 1 | — | Aug 31 – Dec 14 | 90–365 |
🌿 Herbs to Grow in Power County
35 herbs that grow well in Zone 6a with planting dates for Power County.
Show all 35 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Angelica | Apr 6 | Apr 27 | May 4 | Jul 22 | — | 365–730 |
| Anise | Apr 6 | Apr 27 | May 4 | Jul 22 | Aug 3 – Oct 19 | 90–120 |
| Basil | Mar 23 | May 18 | May 25 | — | Jul 20 – Sep 21 | 50–75 |
| Bee Balm | — | — | May 18 | — | Aug 17 – Nov 2 | 90–120 |
| Borage | Apr 6 | Apr 27 | May 4 | Jul 22 | Jun 29 – Aug 17 | 50–60 |
| Caraway | Apr 6 | Apr 27 | May 4 | Jul 22 | — | 365–450 |
| Catnip | — | — | May 18 | — | Jul 20 – Sep 21 | 60–80 |
| Chamomile | Apr 6 | Apr 27 | May 4 | Jul 22 | Jul 6 – Sep 14 | 60–90 |
| Chervil | Apr 6 | Apr 27 | May 4 | Jul 22 | Jun 15 – Aug 17 | 40–60 |
| Chives | — | — | May 18 | — | Jul 20 – Sep 28 | 60–90 |
| Cilantro | Apr 6 | Apr 27 | May 4 | Jul 22 | Jun 15 – Aug 17 | 40–60 |
| Comfrey | — | — | May 18 | — | Jul 20 – Sep 28 | 60–90 |
| Cumin | Apr 6 | Apr 27 | May 4 | Jul 22 | Aug 17 – Oct 19 | 100–120 |
| Dill | Apr 6 | Apr 27 | May 4 | Jul 22 | Jun 15 – Aug 17 | 40–60 |
| Epazote | Mar 23 | May 18 | May 25 | — | Jul 13 – Sep 7 | 45–60 |
| Fennel (herb) | Apr 6 | Apr 27 | May 4 | Jul 22 | Jul 6 – Sep 14 | 60–90 |
| Feverfew | — | — | May 18 | — | Aug 17 – Nov 2 | 90–120 |
| Garlic Chives | — | — | May 18 | — | Jul 20 – Sep 28 | 60–90 |
| Horehound | — | — | May 18 | — | Aug 3 – Sep 28 | 75–90 |
| Hyssop | — | — | May 18 | — | Jul 27 – Sep 28 | 70–90 |
| Lemon Balm | — | — | May 18 | — | Jul 20 – Sep 7 | 60–70 |
| Lemon Thyme | — | — | May 18 | — | Jul 27 – Sep 28 | 70–90 |
| Lovage | — | — | May 18 | — | Jul 27 – Sep 28 | 70–90 |
| Marjoram | — | — | May 18 | — | Jul 20 – Sep 28 | 60–90 |
| Mint | — | — | May 18 | — | Jul 20 – Sep 28 | 60–90 |
| Oregano | — | — | May 18 | — | Jul 20 – Sep 28 | 60–90 |
| Parsley | Apr 6 | Apr 27 | May 4 | Jul 22 | Jul 6 – Sep 7 | 60–80 |
| Rue | — | — | May 18 | — | Jul 27 – Sep 28 | 70–90 |
| Sage | — | — | May 18 | — | Aug 3 – Sep 28 | 75–90 |
| Savory | — | — | May 18 | — | Jul 13 – Sep 7 | 50–70 |
| Sorrel | Apr 6 | Apr 27 | May 4 | Jul 22 | Jun 15 – Aug 17 | 40–60 |
| Tarragon | — | — | May 18 | — | Jul 20 – Sep 28 | 60–90 |
| Thai Basil | Mar 23 | May 18 | May 25 | — | Jul 20 – Sep 21 | 50–75 |
| Thyme | — | — | May 18 | — | Jul 27 – Sep 28 | 70–90 |
| Valerian | — | — | May 18 | — | Sep 21 – Nov 30 | 120–180 |
🌸 Flowers to Grow in Power County
53 flowers that grow well in Zone 6a with planting dates for Power County.
Show all 53 flowers with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Bloom | Days to Maturity |
|---|---|---|---|---|---|---|
| Ageratum | Mar 23 | May 11 | May 11 | — | Jul 6 – Oct 12 | 60–75 |
| Alliums | — | — | — | Aug 19 | Sep 16 – Oct 14 | 28–42 |
| Anemones | Apr 13 | — | May 11 | — | Jun 15 – Jul 13 | 90–120 |
| Astilbe | Mar 9 | — | May 18 | — | Jul 27 – Oct 5 | 70–100 |
| Bachelor's Button | Mar 30 | Apr 13 | May 11 | Aug 19 | Jul 13 – Sep 28 | 60–90 |
| Begonias | Mar 2 | — | May 18 | — | Jul 27 – Oct 26 | 70–90 |
| Black-eyed Susan | Mar 9 | May 11 | May 18 | — | Aug 3 – Nov 16 | 60–80 |
| Bleeding Hearts | Mar 9 | — | May 18 | — | Jul 13 – Aug 17 | 60–90 |
| Calendula | Mar 30 | Apr 13 | May 11 | — | Jun 29 – Sep 28 | 50–70 |
| California Poppy | — | Apr 13 | — | — | Jun 22 – Aug 3 | 60–90 |
| Celosia | Apr 6 | May 18 | May 18 | — | Jul 20 – Nov 2 | 60–90 |
| Columbine | Mar 9 | May 25 | May 25 | — | Jul 20 – Aug 24 | 70–100 |
| Coreopsis | Mar 9 | May 18 | May 18 | — | Jul 27 – Nov 16 | 60–80 |
| Cosmos | Apr 13 | May 11 | May 11 | — | Jul 20 – Oct 26 | 60–90 |
| Crocus | — | — | — | Aug 19 | Jul 8 – Jul 29 | 10–20 |
| Daffodils | — | — | — | Aug 19 | Jul 15 – Aug 5 | 20–40 |
| Dahlias | Apr 13 | May 18 | May 18 | — | Aug 3 – Nov 16 | 70–120 |
| Daylily | Mar 9 | — | May 18 | — | Aug 3 – Nov 16 | 60–90 |
| Dianthus | Mar 16 | Apr 13 | Apr 27 | — | Jun 15 – Sep 14 | 60–80 |
| Echinacea (Purple Coneflower) | Mar 9 | May 25 | May 25 | — | Aug 17 – Nov 23 | 70–90 |
| Foxglove | Mar 9 | May 18 | May 18 | — | Jul 13 – Aug 17 | 80–120 |
| Gaillardia (Blanket Flower) | Mar 23 | May 18 | May 18 | — | Jul 27 – Nov 30 | 70–100 |
| Geraniums | Mar 2 | — | May 18 | — | Jul 27 – Oct 26 | 70–100 |
| Gladiolus | — | May 11 | May 11 | — | Jul 27 – Nov 9 | 70–100 |
| Hostas | Mar 2 | — | May 18 | — | Aug 3 – Nov 16 | 60–90 |
| Hyacinths | — | — | — | Aug 19 | Aug 5 – Aug 26 | 14–28 |
| Hydrangeas | Mar 2 | — | May 18 | — | Jul 27 – Nov 2 | 90–150 |
| Impatiens | Mar 16 | — | May 18 | — | Jul 27 – Nov 2 | 60–75 |
| Irises | — | Division | May 18 | — | Jul 13 – Aug 10 | 60–100 |
| Larkspur | — | Apr 13 | — | — | Jun 22 – Aug 17 | 60–90 |
| Lavender | Mar 2 | — | May 25 | — | Aug 3 – Sep 28 | 90–120 |
| Lilies | — | Division | May 18 | — | Jul 27 – Nov 2 | 70–120 |
| Lobelia | Mar 9 | — | Apr 27 | — | Jun 22 – Sep 14 | 70–80 |
| Lupine | Mar 9 | May 18 | May 18 | — | Jul 13 – Aug 17 | 75–100 |
| Marigolds | Mar 30 | May 18 | May 18 | — | Jul 13 – Oct 12 | 50–70 |
| Nasturtium | Apr 13 | May 18 | May 18 | — | Jul 13 – Nov 2 | 55–65 |
| Pansy | Mar 2 | — | May 11 | Aug 5 | Jul 6 – Sep 7 | 70–90 |
| Peonies | — | Division | May 18 | — | Jul 20 – Aug 24 | 90–120 |
| Petunia | Mar 16 | — | May 18 | — | Jul 27 – Nov 2 | 70–90 |
| Phlox | Mar 9 | May 18 | May 18 | — | Jul 27 – Oct 19 | 80–110 |
| Portulaca | Apr 6 | May 18 | May 18 | — | Jul 6 – Oct 19 | 50–70 |
| Ranunculus | Mar 30 | — | May 11 | — | Jun 22 – Jul 20 | 90–120 |
| Roses | Mar 2 | — | May 18 | — | Jul 27 – Nov 16 | 90–180 |
| Salvia | Mar 9 | — | May 18 | — | Jul 27 – Nov 2 | 70–90 |
| Sedum (Stonecrop) | Mar 9 | — | May 18 | — | Sep 7 – Nov 23 | 60–90 |
| Snapdragon | Mar 2 | Apr 20 | May 11 | — | Jul 20 – Sep 28 | 70–100 |
| Sunflower | Apr 20 | May 18 | May 18 | — | Aug 10 – Nov 2 | 70–100 |
| Sweet Alyssum | Mar 23 | Apr 20 | May 11 | — | Jun 22 – Aug 31 | 45–60 |
| Sweet Pea | Mar 30 | Apr 6 | May 11 | — | Jul 27 – Oct 5 | 65–85 |
| Tulips | — | — | — | Aug 19 | Jul 29 – Aug 26 | 15–30 |
| Vinca (Annual) | Mar 2 | — | May 18 | — | Jul 27 – Nov 2 | 70–90 |
| Yarrow | Mar 9 | May 11 | May 18 | — | Jul 27 – Nov 16 | 60–90 |
| Zinnia | Apr 13 | May 18 | May 18 | — | Jul 27 – Nov 2 | 60–70 |
Monthly Planting Guide for Power County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Power County.
Frequently Asked Questions
What planting zone is Power County, ID?
Power County is in USDA Hardiness Zone 6a. 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 Power County, ID?
Based on 29 years of NOAA weather station data, the median last spring frost in Power County falls around May 11. In 8 out of 10 years, last frost lands between April 29 and June 11 — a 43-day window of variability. Use June 11 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in Power County, ID?
The median first fall frost in Power County arrives around September 30. In cold years it can arrive as early as September 6; in mild years as late as October 18. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Power County?
Power County has a frost-free growing season of approximately 142 days. Focus on short-season varieties and start warm-season crops indoors 6–8 weeks before last frost. Climate records show the growing season is trending shorter by about 0.93 days per decade.
What is the soil like in Power County for gardening?
Power County has predominantly Loam soil with a pH range of 6.6–8.2 and Well Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.
What is grown commercially in Power County?
Power County has commercial agriculture that includes Potatoes, Cattle, Hay, Barley, Dairy. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is Power County a good location for home gardening?
Power County scores 39/100 (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 Power County Garden Planner — Free
A 22-page printable planner built for Power County (Zone 6a). 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