Kitsap County, WA — Planting Guide
Your May game plan for Kitsap County, Washington
A quick May briefing for Kitsap County, Washington gardeners — what's urgent, what's next, and what can wait.
-
Time to start basil, peppers, and pole beans inside
You're about 25 weeks out from your last frost — the perfect window to get these germinating indoors.
-
Basket week: basil, carrots, and cucumber
Check every 1–2 days. Many of these get tough or go to seed if you wait too long.
To set up a strong June, finish these tasks
- First harvests: basil, carrots, and cucumber
Kitsap County is in USDA Zone 9a. The average last spring frost is March 25 and the first fall frost is November 5, giving you a growing season of approximately 225 days.
At an elevation of 264 ft, Kitsap County receives approximately 38 in of rainfall annually. Summer highs average 85°F with winter lows around 41°F. The predominant soil type is Silt Loam.
Based on 31 years of NOAA climate station data, the last frost date here varies by 42 days year to year — ranging from March 4 in warm years to April 15 in cold years. The growing season is trending longer by about 2.63 days per decade. Kitsap County scores 61/100 (Good) on the Microclimate Index.
🌡️ Zone
9a (°F to °F min)
❄️ Last Frost
March 25
🍂 First Frost
November 5
📅 Growing Season
225 days
⛰️ Elevation
264 ft
🌧️ Annual Rainfall
38 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 | 5.1 in | 16 days | — | None |
| Feb | 4.5 in | 13 days | — | Low |
| Mar | 4.3 in | 18 days | — | Low |
| Apr | 2.7 in | 11 days | 1.6 in | High |
| May | 2 in | 8 days | 2.3 in | High |
| Jun | 1.3 in | 7 days | 3 in | High |
| Jul | 0.7 in | 2 days | 3.6 in | Critical |
| Aug | 0.7 in | 3 days | 3.6 in | Critical |
| Sep | 1.4 in | 4 days | 2.9 in | High |
| Oct | 2.9 in | 9 days | 1.4 in | Moderate |
| Nov | 6.5 in | 16 days | — | Low |
| Dec | 6 in | 16 days | — | None |
Annual total: 38.1 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.
Kitsap County Soil Profile
Soil Type
Silt Loam
Soil pH
5.3-6.3
Drainage
Well Drained
Frost Risk Probability
Based on 31 years of NOAA weather station data from 3 stations
Beginners: Plant frost-sensitive crops (tomatoes, peppers, squash) after the "Safe" date on the left. Harvest or cover them before the "Protect by" date on the right. Hardy crops (lettuce, peas, kale) can go in the yellow transition zones.
How to read this table: "Conservative" means you're safe from frost 9 out of 10 years — best for beginners and frost-sensitive crops. "Average year" is the typical date. "Aggressive" means only 1 in 10 years is that warm — experienced gardeners with frost protection can try these dates.
| Planting Strategy | Last Spring Frost | First Fall Frost | Frost-Free Days |
|---|---|---|---|
| Conservative (safest) | Apr 15 | Nov 28 | 227 days |
| Cautious | Apr 4 | Nov 14 | 224 days |
| Average year | Mar 25 | Nov 5 | 225 days |
| Optimistic | Mar 20 | Oct 29 | 223 days |
| Aggressive (risky) | Mar 4 | Oct 12 | 222 days |
Not very — frost dates can vary by ±42 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 2.6 days per decade). Spring is arriving earlier than it used to. Good news for gardeners.
Gardening Difficulty Score
Kitsap County offers good growing conditions. A little planning around frost dates goes a long way.
Local Gardening Help in Kitsap 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 Kitsap County's climate and soil.
County Extension Office
Kitsap 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 Kitsap County
Finding local nurseries & garden centers in Kitsap County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Kitsap 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 Kitsap County WA" or "garden center Kitsap 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 Kitsap County WA" or check your extension office and local parks department. Facebook groups like "Kitsap 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
15.8 hours
Summer solstice daylight
Shortest Day
8.2 hours
Winter solstice daylight
Peak Sun Hours
10.5 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 | 8.6 hr | 2.1 hr | Short day |
| February | 10 hr | 2.9 hr | Short day |
| March | 11.6 hr | 4.1 hr | Short day |
| April | 13.4 hr | 5.4 hr | Neutral |
| May | 14.9 hr | 7.7 hr | Long day |
| June | 15.8 hr | 9.1 hr | Long day |
| July | 15.4 hr | 10.5 hr | Long day |
| August | 14.1 hr | 9.3 hr | Long day |
| September | 12.3 hr | 6.9 hr | Neutral |
| October | 10.6 hr | 3.9 hr | Short day |
| November | 9 hr | 2.1 hr | Short day |
| December | 8.2 hr | 1.9 hr | Short day |
Peak sun hours factor in typical cloud cover — use these for solar panel and shade-planning calculations.
Soil Temperature & Composting Calendar
Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.
Plant Warm Crops When
Soil reaches 60°F+
Soil warm enough from May through Nov.
Best Month to Compost
May
Microbial activity peaks when soil is warm.
Active Composting
9 months
Nearly year-round composting.
View detailed monthly data
| Month | Soil 4" Deep | Soil 8" Deep | Compost Activity | Time to Finish |
|---|---|---|---|---|
| Jan | 42°F | 49°F | 🐢 Slow | ~24 weeks |
| Feb | 45°F | 48°F | 🐢 Slow | ~24 weeks |
| Mar | 52°F | 55°F | ♻️ Active | ~14 weeks |
| Apr | 60°F | 59°F | ♻️ Active | ~14 weeks |
| May | 69°F | 67°F | 🔥 Peak | ~8 weeks |
| Jun | 79°F | 77°F | 🔥 Peak | ~8 weeks |
| Jul | 89°F | 83°F | 🔥 Peak | ~8 weeks |
| Aug | 88°F | 86°F | 🔥 Peak | ~8 weeks |
| Sep | 82°F | 82°F | 🔥 Peak | ~8 weeks |
| Oct | 70°F | 73°F | 🔥 Peak | ~8 weeks |
| Nov | 60°F | 64°F | ♻️ Active | ~14 weeks |
| Dec | 48°F | 55°F | 🐢 Slow | ~24 weeks |
Highlighted rows = soil 60°F+ (safe for warm-season transplants). Compost finishes fastest during peak activity months.
Pest & Disease Pressure in Kitsap 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
High fungal/bacterial risk. Space plants for airflow, water at soil level.
Seasonal Risk
View 6 common pests in your area
| Pest | Risk Level | Peak Months |
|---|---|---|
| Aphids | High | Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov |
| Squash vine borers | Moderate | May, Jun, Jul |
| Stink bugs | High | Apr, May, Jun, Jul, Aug, Sep, Oct |
| Whiteflies | High | May, Jun, Jul, Aug, Sep, Oct |
| Spider mites | Moderate | Jun, Jul, Aug, Sep |
| Fire ants | Low | Mar, Apr, May, Jun, Jul, Aug, Sep, Oct |
Organic pest management tips
- Install physical barriers: floating row covers, copper tape for slugs, mesh netting
- Apply Bt (Bacillus thuringiensis) for caterpillar control — safe for beneficial insects
- Use kaolin clay spray to deter a wide range of insects on fruiting crops
- Release beneficial insects: ladybugs for aphids, parasitic wasps for caterpillars
- Apply neem oil weekly during high-pressure months
- Mulch heavily (3-4 inches) to reduce soil-borne disease splash
Cover Crops for Kitsap County
Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with county-specific planting dates.
Spring Cover Crops (4 options) — Build soil before the main growing season
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Buckwheat | Apr 1 | Sep 10 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Cowpeas (southern peas) | Mar 30 | Sep 3 | ✓ Yes | Excellent nitrogen fixer for warm climates, edible |
| Sorghum-sudan grass | Mar 28 | Sep 10 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | Feb 27 | Aug 27 | ✓ 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 | Apr 12 | Oct 15 | — | Deep roots break compaction, attract pollinators and beneficial insects |
Fall Cover Crops (7 options) — Plant after harvest to protect soil over winter
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Austrian winter peas | Aug 31 | Mar 11 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Crimson clover | Sep 8 | Mar 4 | ✓ Yes | Fixes nitrogen, attracts pollinators in spring |
| Daikon radish | Sep 22 | Mar 4 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Aug 18 | Mar 4 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Sep 26 | Mar 4 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Jul 29 | Mar 11 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Aug 11 | Mar 4 | — | 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: 11 mph Summer: 9 mph
Fall: 9 mph Winter: 12 mph
Prevailing wind: SW. Moderate wind — consider a temporary windbreak for young seedlings.
Windbreak Benefit
5.4/10
Moderately beneficial — a simple fence or trellis can protect delicate crops from wind stress.
Frost Pocket Risk
Moderate
Some terrain variation (972 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
18,989 gal
Per 1,000 sq ft of roof area (at 80% collection efficiency)
Recommended Setup
6 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
Jul, Aug
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 38.1 inches of rain per year
- A 1,000 sq ft roof can collect roughly 18,989 gallons annually
- Rainwater harvesting is fully legal in your state
- Use a first-flush diverter to keep roof debris out of your collection
Soil & Growing Conditions in Kitsap County
Soil Type
Silt Loam
Soil pH 5.3–6.3 · Well 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. (38 in. annual rainfall)
Season Tips
225-day frost-free season
Plenty of time for warm-season crops. Start heat-lovers indoors 6–8 weeks before last frost to maximise your harvest window.
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
Reduce heat stress and sun scorch in hot climates with UV-stabilized shade cloth.
Test your soil pH, nitrogen, phosphorus, and potassium levels before planting.
Get instant, accurate soil pH readings to fine-tune your amendments.
🥬 Vegetables to Grow in Kitsap County
115 vegetables that grow well in Zone 9a with planting dates for Kitsap County.
Show all 115 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Acorn Squash | Feb 25 | Mar 25 | Apr 1 | Jun 24 – Jul 29 | 80–100 |
| Amaranth | Feb 11 | Mar 25 | Apr 1 | Jul 1 – Aug 19 | 90–120 |
| Artichoke | — | — | Apr 8 | Aug 12 – Oct 21 | 120–180 |
| Arugula | Feb 25 | Mar 4 | Mar 25 | Apr 29 – Jul 1 | 30–50 |
| Asparagus | — | — | Apr 8 | — | 730–1095 |
| Beets | — | Mar 4 | — | Apr 29 – May 27 | 50–70 |
| Belgian Endive | Feb 25 | Mar 4 | Mar 25 | Jul 15 – Sep 9 | 110–150 |
| Bitter Melon | Feb 11 | Mar 25 | Apr 1 | Jun 3 – Jul 15 | 60–90 |
| Black Beans | — | Apr 1 | — | Jul 1 – Aug 19 | 90–120 |
| Bok Choy | Feb 25 | Mar 4 | Mar 25 | May 6 – Jun 10 | 40–60 |
| Broccoli | Feb 25 | Mar 4 | Mar 25 | May 27 – Jul 8 | 60–90 |
| Broccoli Rabe | Feb 25 | Mar 4 | Mar 25 | May 6 – Jun 10 | 40–60 |
| Brussels Sprouts | Feb 25 | Mar 4 | Mar 25 | Jun 24 – Aug 19 | 90–130 |
| Butternut Squash | Feb 25 | Mar 25 | Apr 1 | Jul 1 – Aug 5 | 85–110 |
| Cabbage | Feb 25 | Mar 4 | Mar 25 | May 27 – Jul 22 | 60–100 |
| Calabash | Feb 11 | Mar 25 | Apr 1 | Jun 24 – Aug 19 | 80–120 |
| Cardoon | — | — | Apr 8 | Aug 12 – Sep 23 | 120–150 |
| Carrots | — | Mar 4 | — | May 6 – Jun 10 | 60–80 |
| Cauliflower | Feb 25 | Mar 4 | Mar 25 | May 20 – Jul 22 | 55–100 |
| Celeriac | Feb 25 | Mar 4 | Mar 25 | Jul 8 – Aug 12 | 100–120 |
| Celery | Feb 25 | Mar 4 | Mar 25 | Jun 17 – Aug 12 | 80–120 |
| Celtuce | Feb 25 | Mar 4 | Mar 25 | May 27 – Jul 8 | 60–90 |
| Chard | Feb 25 | Mar 4 | Mar 25 | May 20 – Jul 8 | 50–60 |
| Chayote | Feb 11 | Mar 25 | Apr 1 | Aug 5 – Oct 14 | 120–180 |
| Chickpeas | Feb 25 | Mar 4 | Mar 25 | Jun 17 – Jul 29 | 80–110 |
| Chicory | Feb 25 | Mar 4 | Mar 25 | May 27 – Jul 8 | 60–85 |
| Chinese Cabbage | Feb 25 | Mar 4 | Mar 25 | May 20 – Jun 17 | 50–70 |
| Christmas Lima Beans | Feb 11 | Mar 25 | Apr 1 | Jun 24 – Jul 29 | 80–100 |
| Collard Greens | Feb 25 | Mar 4 | Mar 25 | May 20 – Jul 22 | 55–75 |
| Corn | — | Apr 1 | — | Jun 3 – Jul 29 | 60–100 |
| Cowpeas | — | Apr 1 | — | Jun 3 – Jul 15 | 60–90 |
| Cress | Feb 25 | Mar 4 | Mar 25 | Apr 8 – Apr 29 | 14–21 |
| Crookneck Squash | Feb 25 | Mar 25 | Apr 1 | May 20 – Jun 17 | 45–60 |
| Crosne | — | Mar 4 | — | Aug 5 – Oct 7 | 150–200 |
| Cucumber | Feb 25 | Mar 25 | Apr 1 | May 27 – Jul 22 | 50–70 |
| Daikon | — | Mar 4 | — | Apr 29 – May 27 | 50–70 |
| Delicata Squash | Feb 25 | Mar 25 | Apr 1 | Jun 24 – Jul 29 | 80–100 |
| Edamame | — | Apr 1 | — | Jun 17 – Jul 29 | 75–100 |
| Eggplant | Feb 11 | Mar 25 | Apr 1 | Jun 10 – Aug 12 | 65–85 |
| Endive | Feb 25 | Mar 4 | Mar 25 | May 13 – Jun 17 | 45–65 |
| Escarole | Feb 25 | Mar 4 | Mar 25 | May 20 – Jun 17 | 50–70 |
| Fava Beans | Feb 25 | Mar 4 | Mar 25 | Jun 10 – Jul 22 | 75–100 |
| Fennel | Feb 11 | Mar 25 | Apr 1 | Jun 3 – Jul 15 | 60–90 |
| Garlic | — | — | — | — | 90–240 |
| Ginger | Feb 11 | Mar 25 | Apr 1 | Dec 2 – Jan 27 | 240–300 |
| Green Beans | — | Apr 1 | — | May 27 – Jul 22 | 50–65 |
| Horseradish | — | — | Apr 8 | Aug 12 – Oct 21 | 120–180 |
| Hot Peppers | Feb 11 | Mar 25 | Apr 1 | Jun 10 – Sep 16 | 70–120 |
| Hubbard Squash | Feb 25 | Mar 25 | Apr 1 | Jul 15 – Aug 19 | 100–120 |
| Jicama | Feb 11 | Mar 25 | Apr 1 | Aug 5 – Oct 14 | 120–180 |
| Kabocha | Feb 25 | Mar 25 | Apr 1 | Jul 1 – Jul 29 | 85–100 |
| Kai Lan | Feb 25 | Mar 4 | Mar 25 | May 13 – Jun 10 | 45–60 |
| Kale | Feb 25 | Mar 4 | Mar 25 | May 20 – Jul 15 | 50–70 |
| Kidney Beans | — | Apr 1 | — | Jul 1 – Aug 5 | 85–110 |
| Kohlrabi | Feb 25 | Mar 4 | Mar 25 | May 13 – Jun 17 | 45–65 |
| Komatsuna | Feb 25 | Mar 4 | Mar 25 | Apr 29 – Jun 3 | 35–50 |
| Leeks | Feb 25 | Mar 4 | Mar 25 | Jun 24 – Sep 9 | 90–150 |
| Lentils | Feb 25 | Mar 4 | Mar 25 | Jun 17 – Jul 29 | 80–110 |
| Lettuce | Feb 25 | Mar 4 | Mar 25 | Apr 29 – Jul 8 | 30–60 |
| Lima Beans | — | Apr 1 | — | Jun 3 – Jul 15 | 60–90 |
| Loofah | Feb 11 | Mar 25 | Apr 1 | Jul 15 – Sep 16 | 100–150 |
| Luffa | Feb 11 | Mar 25 | Apr 1 | Jul 1 – Sep 16 | 90–150 |
| Mache | Feb 25 | Mar 4 | Mar 25 | May 6 – Jun 10 | 40–60 |
| Malabar Spinach | Feb 11 | Mar 25 | Apr 1 | May 27 – Jun 24 | 55–70 |
| Melon | Feb 25 | Mar 25 | Apr 1 | Jun 10 – Jul 29 | 70–100 |
| Microgreens | Feb 25 | Mar 4 | Mar 25 | Apr 1 – Apr 29 | 7–21 |
| Mitsuba | Feb 25 | Mar 4 | Mar 18 | May 13 – Jul 8 | 50–70 |
| Mizuna | Feb 25 | Mar 4 | Mar 25 | Apr 29 – May 27 | 30–45 |
| Mustard Greens | Feb 25 | Mar 4 | Mar 25 | Apr 29 – Jul 1 | 30–50 |
| Napa Cabbage | Feb 25 | Mar 4 | Mar 25 | May 20 – Jun 24 | 55–75 |
| New Zealand Spinach | Feb 11 | Mar 25 | Apr 1 | May 27 – Jun 24 | 55–70 |
| Okra | Feb 11 | Mar 25 | Apr 1 | May 27 – Jul 22 | 50–65 |
| Onion | Feb 25 | Mar 4 | Mar 25 | Jun 24 – Aug 12 | 90–120 |
| Pac Choi | Feb 25 | Mar 4 | Mar 25 | May 6 – Jun 3 | 40–55 |
| Parsnip | — | Mar 4 | — | Jun 17 – Jul 29 | 100–130 |
| Patty Pan Squash | Feb 25 | Mar 25 | Apr 1 | May 20 – Jun 17 | 45–60 |
| Peas | Feb 25 | Mar 4 | Mar 25 | May 20 – Jul 15 | 55–70 |
| Peppers | Feb 11 | Mar 25 | Apr 1 | Jun 3 – Aug 12 | 60–90 |
| Pole Beans | Feb 11 | Mar 25 | Apr 1 | May 27 – Jul 22 | 55–70 |
| Potatoes | Feb 11 | Mar 25 | Apr 1 | Jun 10 – Aug 19 | 70–120 |
| Pumpkin | Feb 25 | Mar 25 | Apr 1 | Jul 1 – Aug 19 | 85–120 |
| Purslane | Feb 25 | Mar 4 | Mar 25 | May 6 – Jun 10 | 40–60 |
| Radicchio | Feb 25 | Mar 4 | Mar 25 | May 27 – Jul 1 | 60–80 |
| Radish | — | Mar 4 | — | Apr 1 – Apr 22 | 22–35 |
| Romanesco | Feb 25 | Mar 4 | Mar 25 | Jun 10 – Jul 22 | 75–100 |
| Rutabaga | — | Mar 4 | — | May 27 – Jul 1 | 80–100 |
| Salsify | — | Mar 4 | — | Jun 17 – Jul 29 | 100–130 |
| Savoy Cabbage | Feb 25 | Mar 4 | Mar 25 | Jun 3 – Jul 29 | 70–110 |
| Scallions | Feb 25 | Mar 4 | Mar 25 | May 20 – Jun 17 | 50–70 |
| Scarlet Runner Beans | Feb 11 | Mar 25 | Apr 1 | Jun 3 – Jul 8 | 60–80 |
| Shallot | Feb 25 | Mar 4 | Mar 25 | Jun 24 – Aug 12 | 90–120 |
| Shiso | Feb 11 | Apr 1 | Apr 1 | May 27 – Jul 22 | 50–70 |
| Snap Peas | Feb 11 | Mar 25 | Apr 1 | May 27 – Jul 22 | 55–70 |
| Snow Peas | Feb 25 | Mar 4 | Mar 25 | May 20 – Jul 15 | 50–65 |
| Soybeans | — | Apr 1 | — | Jun 24 – Aug 19 | 80–120 |
| Spaghetti Squash | Feb 25 | Mar 25 | Apr 1 | Jul 1 – Jul 29 | 85–100 |
| Spinach | Feb 25 | Mar 4 | Mar 25 | Apr 29 – Jul 1 | 35–50 |
| Squash (Summer) | Feb 25 | Mar 25 | Apr 1 | May 20 – Jul 22 | 45–65 |
| Squash (Winter) | Feb 25 | Mar 25 | Apr 1 | Jun 24 – Aug 19 | 80–120 |
| Sunchoke | — | — | Apr 8 | Jul 29 – Sep 23 | 110–150 |
| Sunflower | Feb 11 | Mar 25 | Apr 1 | Jun 10 – Jul 29 | 70–100 |
| Sweet Corn | — | Apr 1 | — | Jun 3 – Jul 15 | 60–90 |
| Sweet Potatoes | Feb 11 | Mar 25 | Apr 1 | Jul 1 – Aug 19 | 90–120 |
| Tatsoi | Feb 25 | Mar 4 | Mar 25 | Apr 29 – Jun 3 | 35–50 |
| Tomatillo | Feb 11 | Mar 25 | Apr 1 | Jun 3 – Aug 12 | 60–85 |
| Tomatoes | Feb 11 | Mar 25 | Apr 1 | Jun 3 – Aug 12 | 60–85 |
| Turmeric | Feb 11 | Mar 25 | Apr 1 | Dec 2 – Jan 27 | 240–300 |
| Turnip | — | Mar 4 | — | Apr 15 – May 20 | 40–60 |
| Watercress | Feb 25 | Mar 4 | Mar 25 | May 6 – Jun 10 | 40–60 |
| Watermelon | Feb 25 | Mar 25 | Apr 1 | Jun 10 – Jul 29 | 70–100 |
| Wax Beans | — | Apr 1 | — | May 27 – Jul 22 | 50–65 |
| Winter Melon | Feb 11 | Mar 25 | Apr 1 | Jul 1 – Aug 19 | 90–120 |
| Yam | Feb 11 | Mar 25 | Apr 1 | Sep 30 – Jan 27 | 180–330 |
| Yard Long Beans | Feb 11 | Mar 25 | Apr 1 | May 27 – Jul 8 | 55–80 |
| Zucchini | Feb 25 | Mar 25 | Apr 1 | May 20 – Jul 15 | 45–60 |
🍓 Fruits to Grow in Kitsap County
24 fruits that grow well in Zone 9a with planting dates for Kitsap County.
Show all 24 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Alpine Strawberries | — | — | Apr 8 | Jul 8 – Oct 21 | 90–180 |
| Blackberries | — | — | Apr 8 | — | 365–730 |
| Boysenberries | — | — | Apr 8 | — | 365–730 |
| Cantaloupe | — | — | Apr 8 | Jun 17 – Jul 22 | 70–90 |
| Che Fruit | — | — | Apr 8 | — | 1095–1825 |
| Dragon Fruit | — | — | Apr 8 | — | 365–730 |
| Elderberries | — | — | Apr 8 | — | 730–1095 |
| Figs | — | — | Apr 8 | — | 730–1825 |
| Goji Berries | — | — | Apr 8 | — | 730–1095 |
| Grapes | — | — | Apr 8 | — | 730–1095 |
| Ground Cherry | — | — | Apr 8 | Jun 17 – Aug 12 | 65–80 |
| Guava | — | — | Apr 8 | — | 365–730 |
| Honeydew | — | — | Apr 8 | Jul 1 – Aug 12 | 80–110 |
| Kiwi | — | — | Apr 8 | — | 1095–1825 |
| Loquat | — | — | Apr 8 | — | 730–1825 |
| Mulberries | — | — | Apr 8 | — | 730–1825 |
| Passion Fruit | — | — | Apr 8 | — | 365–545 |
| Pawpaw | — | — | Apr 8 | — | 1095–2555 |
| Persimmon | — | — | Apr 8 | — | 1095–2555 |
| Pomegranate | — | — | Apr 8 | — | 730–1095 |
| Quince | — | — | Apr 8 | — | 1095–1825 |
| Raspberries | — | — | Apr 8 | — | 365–730 |
| Serviceberries | — | — | Apr 8 | — | 730–1095 |
| Strawberries | — | — | Apr 8 | Jul 8 – Feb 3 | 90–365 |
🌿 Herbs to Grow in Kitsap County
40 herbs that grow well in Zone 9a with planting dates for Kitsap County.
Show all 40 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Anise | Feb 25 | Mar 4 | Mar 18 | Jun 17 – Sep 2 | 90–120 |
| Basil | Feb 11 | Apr 1 | Apr 1 | May 27 – Jul 29 | 50–75 |
| Bee Balm | — | — | Apr 1 | Jul 1 – Sep 16 | 90–120 |
| Borage | Feb 25 | Mar 4 | Mar 18 | May 13 – Jul 1 | 50–60 |
| Caraway | Feb 25 | Mar 4 | Mar 18 | — | 365–450 |
| Catnip | — | — | Apr 1 | Jun 3 – Aug 5 | 60–80 |
| Chamomile | Feb 25 | Mar 4 | Mar 18 | May 20 – Jul 29 | 60–90 |
| Chervil | Feb 25 | Mar 4 | Mar 18 | Apr 29 – Jul 1 | 40–60 |
| Chives | — | — | Apr 1 | Jun 3 – Aug 12 | 60–90 |
| Cilantro | Feb 25 | Mar 4 | Mar 18 | Apr 29 – Jul 1 | 40–60 |
| Comfrey | — | — | Apr 1 | Jun 3 – Aug 12 | 60–90 |
| Cumin | Feb 25 | Mar 4 | Mar 18 | Jul 1 – Sep 2 | 100–120 |
| Dill | Feb 25 | Mar 4 | Mar 18 | Apr 29 – Jul 1 | 40–60 |
| Echinacea | — | — | Apr 1 | Aug 5 – Nov 11 | 120–180 |
| Epazote | Feb 11 | Apr 1 | Apr 1 | May 20 – Jul 15 | 45–60 |
| Fennel (herb) | Feb 25 | Mar 4 | Mar 18 | May 20 – Jul 29 | 60–90 |
| Feverfew | — | — | Apr 1 | Jul 1 – Sep 16 | 90–120 |
| Garlic Chives | — | — | Apr 1 | Jun 3 – Aug 12 | 60–90 |
| Horehound | — | — | Apr 1 | Jun 17 – Aug 12 | 75–90 |
| Hyssop | — | — | Apr 1 | Jun 10 – Aug 12 | 70–90 |
| Lavender | — | — | Apr 1 | Jul 1 – Dec 2 | 90–200 |
| Lemon Balm | — | — | Apr 1 | Jun 3 – Jul 22 | 60–70 |
| Lemon Thyme | — | — | Apr 1 | Jun 10 – Aug 12 | 70–90 |
| Lemon Verbena | Feb 11 | Apr 1 | Apr 1 | Jun 3 – Aug 12 | 60–90 |
| Lemongrass | Feb 11 | Apr 1 | Apr 1 | Jun 17 – Sep 16 | 75–120 |
| Marjoram | — | — | Apr 1 | Jun 3 – Aug 12 | 60–90 |
| Mint | — | — | Apr 1 | Jun 3 – Aug 12 | 60–90 |
| Oregano | — | — | Apr 1 | Jun 3 – Aug 12 | 60–90 |
| Parsley | Feb 25 | Mar 4 | Mar 18 | May 20 – Jul 22 | 60–80 |
| Rosemary | — | — | Apr 1 | Jun 24 – Nov 11 | 80–180 |
| Rue | — | — | Apr 1 | Jun 10 – Aug 12 | 70–90 |
| Sage | — | — | Apr 1 | Jun 17 – Aug 12 | 75–90 |
| Savory | — | — | Apr 1 | May 27 – Jul 22 | 50–70 |
| Sorrel | Feb 25 | Mar 4 | Mar 18 | Apr 29 – Jul 1 | 40–60 |
| Stevia | Feb 11 | Apr 1 | Apr 1 | Jun 3 – Aug 12 | 60–90 |
| Tarragon | — | — | Apr 1 | Jun 3 – Aug 12 | 60–90 |
| Thai Basil | Feb 11 | Apr 1 | Apr 1 | May 27 – Jul 29 | 50–75 |
| Thyme | — | — | Apr 1 | Jun 10 – Aug 12 | 70–90 |
| Valerian | — | — | Apr 1 | Aug 5 – Nov 11 | 120–180 |
| Yarrow | — | — | Apr 1 | Jul 1 – Sep 16 | 90–120 |
Monthly Planting Guide for Kitsap County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Kitsap County.
Frequently Asked Questions
What planting zone is Kitsap County, WA?
Kitsap County is in USDA Hardiness Zone 9a. 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 Kitsap County, WA?
Based on 31 years of NOAA weather station data, the median last spring frost in Kitsap County falls around March 25. In 8 out of 10 years, last frost lands between March 4 and April 15 — a 42-day window of variability. Use April 15 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in Kitsap County, WA?
The median first fall frost in Kitsap County arrives around November 5. In cold years it can arrive as early as October 12; in mild years as late as November 28. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Kitsap County?
Kitsap County has a frost-free growing season of approximately 225 days. This long season supports multiple succession plantings and warm-season crops that need extended heat, like sweet potatoes and melons. Climate records show the growing season is trending longer by about 2.63 days per decade.
What is the soil like in Kitsap County for gardening?
Kitsap County has predominantly Silt Loam soil with a pH range of 5.3–6.3 and Well Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.
What is grown commercially in Kitsap County?
Kitsap County has commercial agriculture that includes Wheat, Apples, Potatoes, Cattle. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is Kitsap County a good location for home gardening?
Kitsap County scores 61/100 (Good) 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 Kitsap County Garden Planner — Free
A 24-page printable planner built for Kitsap County (Zone 9a). 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