Ferry County, WA — Planting Guide
Your May game plan for Ferry County, Washington
Each item below is timed to Ferry County, Washington's frost dates and soil temperatures. Skip nothing, stress about nothing.
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Plant out basil, cucumber, and kale
Frost risk is low now in Ferry County, Washington. If you've been covering beds overnight, you can stop.
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Outdoor sowing time: basil, cucumber, and green beans
Rake a smooth bed, make a shallow furrow, drop seeds at the spacing on the packet, water gently, walk away.
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Bring in the radish, cress, and microgreens
Don't tug. Use scissors or pruners for clean cuts — torn stems invite disease.
Looking ahead to June
- Starting indoors: basil, cucumber, and kale
- First harvests: carrots, lettuce, and radish
Ferry County is in USDA Zone 6b. The average last spring frost is May 10 and the first fall frost is September 24, giving you a growing season of approximately 137 days.
At an elevation of 3,990 ft, Ferry County receives approximately 18.2 in of rainfall annually. Summer highs average 84°F with winter lows around 12°F. The predominant soil type is Silt Loam.
Based on 30 years of NOAA climate station data, the last frost date here varies by 36 days year to year — ranging from April 23 in warm years to May 29 in cold years. Ferry County scores 57/100 (Moderate) on the Microclimate Index.
🌡️ Zone
6b (°F to °F min)
❄️ Last Frost
May 10
🍂 First Frost
September 24
📅 Growing Season
137 days
⛰️ Elevation
3,990 ft
🌧️ Annual Rainfall
18.2 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 | 2.8 in | 16 days | — | None |
| Feb | 2.2 in | 13 days | — | None |
| Mar | 1.7 in | 14 days | — | None |
| Apr | 1.2 in | 11 days | 3.1 in | Critical |
| May | 1.2 in | 9 days | 3.1 in | Critical |
| Jun | 0.7 in | 7 days | 3.6 in | Critical |
| Jul | 0.3 in | 3 days | 4 in | Critical |
| Aug | 0.4 in | 3 days | 3.9 in | Critical |
| Sep | 0.7 in | 5 days | 3.6 in | Critical |
| Oct | 1.4 in | 10 days | 2.9 in | High |
| Nov | 2.5 in | 17 days | — | None |
| Dec | 3.2 in | 20 days | — | None |
Annual total: 18.3 in. Water needs vary by crop — tomatoes need ~1.2"/week while herbs like rosemary need only 0.3"/week. Check individual plant pages for crop-specific water budgets that factor in your county's rainfall and soil drainage.
Ferry County Soil Profile
Soil Type
Silt Loam
Soil pH
5.6-6.4
Drainage
Well Drained
Frost Risk Probability
Based on 30 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 29 | Oct 12 | 136 days |
| Cautious | May 18 | Oct 3 | 138 days |
| Average year | May 10 | Sep 24 | 137 days |
| Optimistic | May 2 | Sep 15 | 136 days |
| Aggressive (risky) | Apr 23 | Sep 7 | 137 days |
Not very — frost dates can vary by ±36 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 (0.5 days/decade). Stay conservative with planting dates.
Gardening Difficulty Score
Ferry County presents some gardening challenges. Choose adapted varieties and plan around frost dates.
Local Gardening Help in Ferry 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 Ferry County's climate and soil.
County Extension Office
Ferry County Washington State University Extension Extension Office
Phone: 509-335-2811
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 Ferry County
Finding local nurseries & garden centers in Ferry County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Ferry 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 Ferry County WA" or "garden center Ferry 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 Ferry County WA" or check your extension office and local parks department. Facebook groups like "Ferry County Gardeners" or "Washington 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
15.9 hours
Summer solstice daylight
Shortest Day
8.1 hours
Winter solstice daylight
Peak Sun Hours
10.3 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 | 8.5 hr | 2.1 hr | Short day |
| February | 9.9 hr | 2.9 hr | Short day |
| March | 11.6 hr | 4.2 hr | Short day |
| April | 13.4 hr | 5.5 hr | Neutral |
| May | 15 hr | 7.3 hr | Long day |
| June | 15.9 hr | 8.5 hr | Long day |
| July | 15.5 hr | 10.3 hr | Long day |
| August | 14.1 hr | 9.1 hr | Long day |
| September | 12.3 hr | 7.4 hr | Neutral |
| October | 10.5 hr | 3.9 hr | Short day |
| November | 8.9 hr | 2.2 hr | Short day |
| December | 8.1 hr | 1.8 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
Jul
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 | 12°F | 19°F | ❄️ Dormant | ~36 weeks |
| Feb | 13°F | 18°F | ❄️ Dormant | ~36 weeks |
| Mar | 19°F | 23°F | ❄️ Dormant | ~36 weeks |
| Apr | 32°F | 31°F | ❄️ Dormant | ~36 weeks |
| May | 48°F | 43°F | 🐢 Slow | ~24 weeks |
| Jun | 57°F | 54°F | ♻️ Active | ~14 weeks |
| Jul | 65°F | 61°F | 🔥 Peak | ~8 weeks |
| Aug | 68°F | 63°F | 🔥 Peak | ~8 weeks |
| Sep | 59°F | 58°F | ♻️ Active | ~14 weeks |
| Oct | 45°F | 48°F | 🐢 Slow | ~24 weeks |
| Nov | 30°F | 38°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 Ferry County
Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.
Insect Pest Pressure
Moderate — common pests appear but manageable with monitoring.
Disease Risk
Low disease risk — dry conditions reduce fungal problems.
Seasonal Risk
View 5 common pests in your area
| Pest | Risk Level | Peak Months |
|---|---|---|
| Aphids | Moderate | May, Jun, Jul, Aug |
| Japanese beetles | Moderate | Jun, Jul, Aug |
| Squash bugs | Low | Jun, Jul, Aug |
| Tomato hornworms | Low | Jul, Aug |
| Cabbage loopers | Low | May, Jun, Jul, Aug |
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 Ferry 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 19 | Jul 16 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Sorghum-sudan grass | May 15 | Jul 16 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | Apr 14 | Jul 23 | ✓ 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 21 | Sep 3 | — | 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 | Jul 27 | Apr 26 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Daikon radish | Aug 16 | Apr 19 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Jul 14 | Apr 26 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Aug 27 | Apr 19 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Jun 26 | Apr 26 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Jun 25 | Apr 19 | — | 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: 12 mph Summer: 9 mph
Fall: 11 mph Winter: 12 mph
Prevailing wind: SW. Moderate wind — consider a temporary windbreak for young seedlings.
Windbreak Benefit
4.7/10
Moderately beneficial — a simple fence or trellis can protect delicate crops from wind stress.
Frost Pocket Risk
Moderate
Some terrain variation (443 ft range). Garden on slopes or higher ground if possible to avoid late-season frost pockets.
Rainwater Harvesting Potential
How much water you can collect, when to collect it, and what size system you need for your garden.
Annual Collection
9,120 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 2,250 gal tank.
Legal Status
Unrestricted
Rainwater harvesting is fully legal in your state with no restrictions.
Best Collection Months
Jan, Feb, Nov, Dec
Highest rainfall months — your barrels will fill up quickly during these months.
Months to Draw From Storage
Jun, Jul, Aug, Sep
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 18.3 inches of rain per year
- A 1,000 sq ft roof can collect roughly 9,120 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 Ferry County
Soil Type
Silt Loam
Soil pH 5.6–6.4 · Excessively Drained drainage
Native soil is well-suited to most vegetables and herbs with regular compost additions.
Watering Needs
Drought stress: 3.5/10
Low-to-moderate drought stress. Plan to water 1–2 times per week during peak summer. (18.2 in. annual rainfall)
Season Tips
137-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 Ferry County
108 vegetables that grow well in Zone 6b with planting dates for Ferry County.
Show all 108 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Acorn Squash | Apr 5 | May 17 | May 24 | Aug 16 – Sep 20 | 80–100 |
| Amaranth | Mar 15 | May 17 | May 24 | Aug 23 – Oct 11 | 90–120 |
| Arugula | Apr 5 | Apr 26 | May 10 | Jun 14 – Aug 16 | 30–50 |
| Asparagus | — | — | May 24 | — | 730–1095 |
| Beets | — | Apr 26 | — | Jun 21 – Jul 19 | 50–70 |
| Belgian Endive | Apr 5 | Apr 26 | May 10 | Aug 30 – Oct 25 | 110–150 |
| Bitter Melon | Mar 15 | May 17 | May 24 | Jul 26 – Sep 6 | 60–90 |
| Black Beans | — | May 17 | — | Aug 16 – Oct 4 | 90–120 |
| Bok Choy | Apr 5 | Apr 26 | May 10 | Jun 21 – Jul 26 | 40–60 |
| Broccoli | Apr 5 | Apr 26 | May 10 | Jul 12 – Aug 23 | 60–90 |
| Broccoli Rabe | Apr 5 | Apr 26 | May 10 | Jun 21 – Jul 26 | 40–60 |
| Brussels Sprouts | Apr 5 | Apr 26 | May 10 | Aug 9 – Oct 4 | 90–130 |
| Butternut Squash | Apr 5 | May 17 | May 24 | Aug 23 – Sep 27 | 85–110 |
| Cabbage | Apr 5 | Apr 26 | May 10 | Jul 12 – Sep 6 | 60–100 |
| Calabash | Mar 15 | May 17 | May 24 | Aug 16 – Oct 11 | 80–120 |
| Carrots | — | Apr 26 | — | Jun 28 – Aug 2 | 60–80 |
| Cauliflower | Apr 5 | Apr 26 | May 10 | Jul 5 – Sep 6 | 55–100 |
| Celeriac | Apr 5 | Apr 26 | May 10 | Aug 23 – Sep 27 | 100–120 |
| Celery | Apr 5 | Apr 26 | May 10 | Aug 2 – Sep 27 | 80–120 |
| Celtuce | Apr 5 | Apr 26 | May 10 | Jul 12 – Aug 23 | 60–90 |
| Chard | Apr 5 | Apr 26 | May 10 | Jul 5 – Aug 23 | 50–60 |
| Chickpeas | Apr 5 | Apr 26 | May 10 | Aug 2 – Sep 13 | 80–110 |
| Chicory | Apr 5 | Apr 26 | May 10 | Jul 12 – Aug 23 | 60–85 |
| Chinese Cabbage | Apr 5 | Apr 26 | May 10 | Jul 5 – Aug 2 | 50–70 |
| Christmas Lima Beans | Mar 15 | May 17 | May 24 | Aug 16 – Sep 20 | 80–100 |
| Collard Greens | Apr 5 | Apr 26 | May 10 | Jul 5 – Sep 6 | 55–75 |
| Corn | — | May 17 | — | Jul 19 – Sep 13 | 60–100 |
| Cowpeas | — | May 17 | — | Jul 19 – Aug 30 | 60–90 |
| Cress | Apr 5 | Apr 26 | May 10 | May 24 – Jun 14 | 14–21 |
| Crookneck Squash | Apr 5 | May 17 | May 24 | Jul 12 – Aug 9 | 45–60 |
| Crosne | — | Apr 26 | — | Sep 27 – Nov 8 | 150–200 |
| Cucumber | Apr 5 | May 17 | May 24 | Jul 19 – Sep 13 | 50–70 |
| Daikon | — | Apr 26 | — | Jun 21 – Jul 19 | 50–70 |
| Delicata Squash | Apr 5 | May 17 | May 24 | Aug 16 – Sep 20 | 80–100 |
| Edamame | — | May 17 | — | Aug 2 – Sep 13 | 75–100 |
| Eggplant | Mar 1 | May 17 | May 24 | Aug 2 – Oct 4 | 65–85 |
| Endive | Apr 5 | Apr 26 | May 10 | Jun 28 – Aug 2 | 45–65 |
| Escarole | Apr 5 | Apr 26 | May 10 | Jul 5 – Aug 2 | 50–70 |
| Fava Beans | Apr 5 | Apr 26 | May 10 | Jul 26 – Sep 6 | 75–100 |
| Fennel | Mar 15 | May 17 | May 24 | Jul 26 – Sep 6 | 60–90 |
| Garlic | — | — | — | — | 90–240 |
| Green Beans | — | May 17 | — | Jul 12 – Sep 6 | 50–65 |
| Horseradish | — | — | May 24 | Sep 27 – Dec 6 | 120–180 |
| Hot Peppers | Mar 1 | May 17 | May 24 | Aug 2 – Nov 8 | 70–120 |
| Hubbard Squash | Apr 5 | May 17 | May 24 | Sep 6 – Oct 11 | 100–120 |
| Kabocha | Apr 5 | May 17 | May 24 | Aug 23 – Sep 20 | 85–100 |
| Kai Lan | Apr 5 | Apr 26 | May 10 | Jun 28 – Jul 26 | 45–60 |
| Kale | Apr 5 | Apr 26 | May 10 | Jul 5 – Aug 30 | 50–70 |
| Kidney Beans | — | May 17 | — | Aug 16 – Sep 20 | 85–110 |
| Kohlrabi | Apr 5 | Apr 26 | May 10 | Jun 28 – Aug 2 | 45–65 |
| Komatsuna | Apr 5 | Apr 26 | May 10 | Jun 14 – Jul 19 | 35–50 |
| Leeks | Apr 5 | Apr 26 | May 10 | Aug 9 – Oct 25 | 90–150 |
| Lentils | Apr 5 | Apr 26 | May 10 | Aug 2 – Sep 13 | 80–110 |
| Lettuce | Apr 5 | Apr 26 | May 10 | Jun 14 – Aug 23 | 30–60 |
| Lima Beans | — | May 17 | — | Jul 19 – Aug 30 | 60–90 |
| Loofah | Mar 15 | May 17 | May 24 | Sep 6 – Nov 8 | 100–150 |
| Luffa | Mar 15 | May 17 | May 24 | Aug 23 – Nov 8 | 90–150 |
| Mache | Apr 5 | Apr 26 | May 10 | Jun 21 – Jul 26 | 40–60 |
| Melon | Apr 5 | May 17 | May 24 | Aug 2 – Sep 20 | 70–100 |
| Microgreens | Apr 5 | Apr 26 | May 10 | May 17 – Jun 14 | 7–21 |
| Mitsuba | Apr 5 | Apr 26 | May 3 | Jun 28 – Aug 23 | 50–70 |
| Mizuna | Apr 5 | Apr 26 | May 10 | Jun 14 – Jul 12 | 30–45 |
| Mustard Greens | Apr 5 | Apr 26 | May 10 | Jun 14 – Aug 16 | 30–50 |
| Napa Cabbage | Apr 5 | Apr 26 | May 10 | Jul 5 – Aug 9 | 55–75 |
| New Zealand Spinach | Mar 15 | May 17 | May 24 | Jul 19 – Aug 16 | 55–70 |
| Okra | Mar 15 | May 17 | May 24 | Jul 19 – Sep 13 | 50–65 |
| Onion | Apr 5 | Apr 26 | May 10 | Aug 9 – Sep 27 | 90–120 |
| Pac Choi | Apr 5 | Apr 26 | May 10 | Jun 21 – Jul 19 | 40–55 |
| Parsnip | — | Apr 26 | — | Aug 9 – Sep 20 | 100–130 |
| Patty Pan Squash | Apr 5 | May 17 | May 24 | Jul 12 – Aug 9 | 45–60 |
| Peas | Apr 5 | Apr 26 | May 10 | Jul 5 – Aug 30 | 55–70 |
| Peppers | Mar 1 | May 17 | May 24 | Jul 26 – Oct 4 | 60–90 |
| Pole Beans | Mar 15 | May 17 | May 24 | Jul 19 – Sep 13 | 55–70 |
| Potatoes | Mar 15 | May 17 | May 24 | Aug 2 – Oct 11 | 70–120 |
| Pumpkin | Apr 5 | May 17 | May 24 | Aug 23 – Oct 11 | 85–120 |
| Purslane | Apr 5 | Apr 26 | May 10 | Jun 21 – Jul 26 | 40–60 |
| Radicchio | Apr 5 | Apr 26 | May 10 | Jul 12 – Aug 16 | 60–80 |
| Radish | — | Apr 26 | — | May 24 – Jun 14 | 22–35 |
| Rhubarb | — | — | May 31 | — | 365–730 |
| Romanesco | Apr 5 | Apr 26 | May 10 | Jul 26 – Sep 6 | 75–100 |
| Rutabaga | — | Apr 26 | — | Jul 19 – Aug 23 | 80–100 |
| Salsify | — | Apr 26 | — | Aug 9 – Sep 20 | 100–130 |
| Savoy Cabbage | Apr 5 | Apr 26 | May 10 | Jul 19 – Sep 13 | 70–110 |
| Scallions | Apr 5 | Apr 26 | May 10 | Jul 5 – Aug 2 | 50–70 |
| Scarlet Runner Beans | Mar 15 | May 17 | May 24 | Jul 26 – Aug 30 | 60–80 |
| Shallot | Apr 5 | Apr 26 | May 10 | Aug 9 – Sep 27 | 90–120 |
| Shiso | Mar 22 | May 17 | May 24 | Jul 19 – Sep 13 | 50–70 |
| Snap Peas | Mar 15 | May 17 | May 24 | Jul 19 – Sep 13 | 55–70 |
| Snow Peas | Apr 5 | Apr 26 | May 10 | Jul 5 – Aug 30 | 50–65 |
| Soybeans | — | May 17 | — | Aug 9 – Oct 4 | 80–120 |
| Spaghetti Squash | Apr 5 | May 17 | May 24 | Aug 23 – Sep 20 | 85–100 |
| Spinach | Apr 5 | Apr 26 | May 10 | Jun 14 – Aug 16 | 35–50 |
| Squash (Summer) | Apr 5 | May 17 | May 24 | Jul 12 – Sep 13 | 45–65 |
| Squash (Winter) | Apr 5 | May 17 | May 24 | Aug 16 – Oct 11 | 80–120 |
| Sunchoke | — | — | May 24 | Sep 13 – Nov 8 | 110–150 |
| Sunflower | Mar 15 | May 17 | May 24 | Aug 2 – Sep 20 | 70–100 |
| Sweet Corn | — | May 17 | — | Jul 19 – Aug 30 | 60–90 |
| Sweet Potatoes | Mar 15 | May 17 | May 24 | Aug 23 – Oct 11 | 90–120 |
| Tatsoi | Apr 5 | Apr 26 | May 10 | Jun 14 – Jul 19 | 35–50 |
| Tomatillo | Mar 15 | May 17 | May 24 | Jul 26 – Oct 4 | 60–85 |
| Tomatoes | Mar 15 | May 17 | May 24 | Jul 26 – Oct 4 | 60–85 |
| Turnip | — | Apr 26 | — | Jun 7 – Jul 12 | 40–60 |
| Watercress | Apr 5 | Apr 26 | May 10 | Jun 21 – Jul 26 | 40–60 |
| Watermelon | Apr 5 | May 17 | May 24 | Aug 2 – Sep 20 | 70–100 |
| Wax Beans | — | May 17 | — | Jul 12 – Sep 6 | 50–65 |
| Winter Melon | Mar 15 | May 17 | May 24 | Aug 23 – Oct 11 | 90–120 |
| Yard Long Beans | Mar 15 | May 17 | May 24 | Jul 19 – Aug 30 | 55–80 |
| Zucchini | Apr 5 | May 17 | May 24 | Jul 12 – Sep 6 | 45–60 |
🍓 Fruits to Grow in Ferry County
27 fruits that grow well in Zone 6b with planting dates for Ferry County.
Show all 27 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Alpine Strawberries | — | — | May 31 | Aug 30 – Dec 13 | 90–180 |
| Aronia | — | — | May 31 | — | 730–1095 |
| Blackberries | — | — | May 31 | — | 365–730 |
| Blueberries | — | — | May 31 | — | 730–1095 |
| Boysenberries | — | — | May 31 | — | 365–730 |
| Cantaloupe | — | — | May 31 | Aug 9 – Sep 13 | 70–90 |
| Che Fruit | — | — | May 31 | — | 1095–1825 |
| Cranberries | — | — | May 31 | — | 730–1095 |
| Currants | — | — | May 31 | — | 730–1095 |
| Elderberries | — | — | May 31 | — | 730–1095 |
| Goji Berries | — | — | May 31 | — | 730–1095 |
| Gooseberries | — | — | May 31 | — | 730–1095 |
| Grapes | — | — | May 31 | — | 730–1095 |
| Ground Cherry | — | — | May 31 | Aug 9 – Oct 4 | 65–80 |
| Hardy Kiwi | — | — | May 31 | — | 1095–1825 |
| Haskaps | — | — | May 31 | — | 730–1095 |
| Honeydew | — | — | May 31 | Aug 23 – Oct 4 | 80–110 |
| Jostaberry | — | — | May 31 | — | 730–1095 |
| Lingonberries | — | — | May 31 | — | 730–1095 |
| Medlar | — | — | May 31 | — | 1095–1825 |
| Mulberries | — | — | May 31 | — | 730–1825 |
| Pawpaw | — | — | May 31 | — | 1095–2555 |
| Persimmon | — | — | May 31 | — | 1095–2555 |
| Quince | — | — | May 31 | — | 1095–1825 |
| Raspberries | — | — | May 31 | — | 365–730 |
| Serviceberries | — | — | May 31 | — | 730–1095 |
| Strawberries | — | — | May 31 | Aug 30 – Dec 13 | 90–365 |
🌿 Herbs to Grow in Ferry County
38 herbs that grow well in Zone 6b with planting dates for Ferry County.
Show all 38 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Angelica | Apr 5 | Apr 26 | May 3 | — | 365–730 |
| Anise | Apr 5 | Apr 26 | May 3 | Aug 2 – Oct 18 | 90–120 |
| Basil | Mar 22 | May 17 | May 24 | Jul 19 – Sep 20 | 50–75 |
| Bee Balm | — | — | May 17 | Aug 16 – Nov 1 | 90–120 |
| Borage | Apr 5 | Apr 26 | May 3 | Jun 28 – Aug 16 | 50–60 |
| Caraway | Apr 5 | Apr 26 | May 3 | — | 365–450 |
| Catnip | — | — | May 17 | Jul 19 – Sep 20 | 60–80 |
| Chamomile | Apr 5 | Apr 26 | May 3 | Jul 5 – Sep 13 | 60–90 |
| Chervil | Apr 5 | Apr 26 | May 3 | Jun 14 – Aug 16 | 40–60 |
| Chives | — | — | May 17 | Jul 19 – Sep 27 | 60–90 |
| Cilantro | Apr 5 | Apr 26 | May 3 | Jun 14 – Aug 16 | 40–60 |
| Comfrey | — | — | May 17 | Jul 19 – Sep 27 | 60–90 |
| Cumin | Apr 5 | Apr 26 | May 3 | Aug 16 – Oct 18 | 100–120 |
| Dill | Apr 5 | Apr 26 | May 3 | Jun 14 – Aug 16 | 40–60 |
| Echinacea | — | — | May 17 | Sep 20 – Nov 29 | 120–180 |
| Epazote | Mar 22 | May 17 | May 24 | Jul 12 – Sep 6 | 45–60 |
| Fennel (herb) | Apr 5 | Apr 26 | May 3 | Jul 5 – Sep 13 | 60–90 |
| Feverfew | — | — | May 17 | Aug 16 – Nov 1 | 90–120 |
| Garlic Chives | — | — | May 17 | Jul 19 – Sep 27 | 60–90 |
| Horehound | — | — | May 17 | Aug 2 – Sep 27 | 75–90 |
| Hyssop | — | — | May 17 | Jul 26 – Sep 27 | 70–90 |
| Lavender | — | — | May 17 | Aug 16 – Nov 29 | 90–200 |
| Lemon Balm | — | — | May 17 | Jul 19 – Sep 6 | 60–70 |
| Lemon Thyme | — | — | May 17 | Jul 26 – Sep 27 | 70–90 |
| Lovage | — | — | May 17 | Jul 26 – Sep 27 | 70–90 |
| Marjoram | — | — | May 17 | Jul 19 – Sep 27 | 60–90 |
| Mint | — | — | May 17 | Jul 19 – Sep 27 | 60–90 |
| Oregano | — | — | May 17 | Jul 19 – Sep 27 | 60–90 |
| Parsley | Apr 5 | Apr 26 | May 3 | Jul 5 – Sep 6 | 60–80 |
| Rue | — | — | May 17 | Jul 26 – Sep 27 | 70–90 |
| Sage | — | — | May 17 | Aug 2 – Sep 27 | 75–90 |
| Savory | — | — | May 17 | Jul 12 – Sep 6 | 50–70 |
| Sorrel | Apr 5 | Apr 26 | May 3 | Jun 14 – Aug 16 | 40–60 |
| Tarragon | — | — | May 17 | Jul 19 – Sep 27 | 60–90 |
| Thai Basil | Mar 22 | May 17 | May 24 | Jul 19 – Sep 20 | 50–75 |
| Thyme | — | — | May 17 | Jul 26 – Sep 27 | 70–90 |
| Valerian | — | — | May 17 | Sep 20 – Nov 29 | 120–180 |
| Yarrow | — | — | May 17 | Aug 16 – Nov 1 | 90–120 |
Monthly Planting Guide for Ferry County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Ferry County.
Frequently Asked Questions
What planting zone is Ferry County, WA?
Ferry County is in USDA Hardiness Zone 6b. 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 Ferry County, WA?
Based on 30 years of NOAA weather station data, the median last spring frost in Ferry County falls around May 10. In 8 out of 10 years, last frost lands between April 23 and May 29 — a 36-day window of variability. Use May 29 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in Ferry County, WA?
The median first fall frost in Ferry County arrives around September 24. In cold years it can arrive as early as September 7; in mild years as late as October 12. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Ferry County?
Ferry County has a frost-free growing season of approximately 137 days. Focus on short-season varieties and start warm-season crops indoors 6–8 weeks before last frost.
What is the soil like in Ferry County for gardening?
Ferry County has predominantly Silt Loam soil with a pH range of 5.6–6.4 and Excessively Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.
What is grown commercially in Ferry County?
Ferry County has commercial agriculture that includes Wheat, Hay, Cattle, Apples, Potatoes. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is Ferry County a good location for home gardening?
Ferry County scores 57/100 (Moderate) on our Microclimate Index, which combines frost reliability, drought pressure, soil challenge, elevation risk, and long-term climate trend. Conditions here are moderate — most common crops grow well with standard timing and care.
Your Ferry County Garden Planner — Free
A 24-page printable planner built for Ferry County (Zone 6b). 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