Tillamook County, OR — Planting Guide
Tillamook County is in USDA Zone 8b. The average last spring frost is April 19 and the first fall frost is October 29, giving you a growing season of approximately 193 days.
At an elevation of 332 ft, Tillamook County receives approximately 40.8 in of rainfall annually. Summer highs average 85°F with winter lows around 47°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 26 in warm years to May 8 in cold years. The growing season is trending longer by about 2.61 days per decade. Tillamook County scores 61/100 (Good) on the Microclimate Index.
🌡️ Zone
8b (15°F to 20°F min)
❄️ Last Frost
April 19
🍂 First Frost
October 29
📅 Growing Season
193 days
⛰️ Elevation
332 ft
🌧️ Annual Rainfall
40.8 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 | 5.4 in | 17 days | — | None |
| Feb | 4.1 in | 16 days | 0.2 in | Low |
| Mar | 4.1 in | 15 days | 0.2 in | Low |
| Apr | 3.4 in | 12 days | 0.9 in | Moderate |
| May | 2.5 in | 9 days | 1.8 in | High |
| Jun | 1.8 in | 6 days | 2.5 in | High |
| Jul | 0.7 in | 2 days | 3.6 in | Critical |
| Aug | 0.8 in | 2 days | 3.5 in | Critical |
| Sep | 1.8 in | 4 days | 2.5 in | High |
| Oct | 3.7 in | 12 days | 0.6 in | Moderate |
| Nov | 6.4 in | 18 days | — | Low |
| Dec | 6.2 in | 19 days | — | None |
Annual total: 40.9 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.
Tillamook County Soil Profile
Soil Type
Silt Loam
Soil pH
5.3-6.5
Drainage
Well Drained
Frost Risk Probability
Based on 31 years of NOAA weather station data from 3 stations
Beginners: Plant frost-sensitive crops (tomatoes, peppers, squash) after the "Safe" date on the left. Harvest or cover them before the "Protect by" date on the right. Hardy crops (lettuce, peas, kale) can go in the yellow transition zones.
How to read this table: "Conservative" means you're safe from frost 9 out of 10 years — best for beginners and frost-sensitive crops. "Average year" is the typical date. "Aggressive" means only 1 in 10 years is that warm — experienced gardeners with frost protection can try these dates.
| Planting Strategy | Last Spring Frost | First Fall Frost | Frost-Free Days |
|---|---|---|---|
| Conservative (safest) | May 8 | Nov 16 | 192 days |
| Cautious | Apr 27 | Nov 7 | 194 days |
| Average year | Apr 19 | Oct 29 | 193 days |
| Optimistic | Apr 12 | Oct 24 | 195 days |
| Aggressive (risky) | Mar 26 | Oct 11 | 199 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
Tillamook County offers good growing conditions. A little planning around frost dates goes a long way.
Local Gardening Help in Tillamook 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 Tillamook County's climate and soil.
County Extension Office
Tillamook County Oregon State University Extension Extension Office
Phone: 541-737-2713
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 Tillamook County
Finding local nurseries & garden centers in Tillamook County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Tillamook 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 Tillamook County OR" or "garden center Tillamook 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 Tillamook County OR" or check your extension office and local parks department. Facebook groups like "Tillamook County Gardeners" or "Oregon 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
15.5 hours
Summer solstice daylight
Shortest Day
8.5 hours
Winter solstice daylight
Peak Sun Hours
11 hr/day peak (summer)
Peak sun hours (green dashed line below) account for cloud cover — this is the usable direct sunlight your garden actually receives. Most vegetables need 6+ peak sun hours.
Onion tip: Your long summer days (14+ hours) support long-day onion varieties like Walla Walla, Sweet Spanish, and Ailsa Craig.
View detailed monthly data
| Month | Daylight Hours | Peak Sun Hours | Day Length |
|---|---|---|---|
| January | 8.9 hr | 2.2 hr | Short day |
| February | 10.1 hr | 3 hr | Short day |
| March | 11.6 hr | 3.9 hr | Short day |
| April | 13.3 hr | 5.7 hr | Neutral |
| May | 14.7 hr | 7.3 hr | Long day |
| June | 15.5 hr | 8.4 hr | Long day |
| July | 15.1 hr | 11 hr | Long day |
| August | 13.9 hr | 9.2 hr | Neutral |
| September | 12.3 hr | 7.2 hr | Neutral |
| October | 10.7 hr | 4 hr | Short day |
| November | 9.2 hr | 2.4 hr | Short day |
| December | 8.5 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 Apr through Oct.
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 | 50°F | 🐢 Slow | ~24 weeks |
| Feb | 43°F | 50°F | 🐢 Slow | ~24 weeks |
| Mar | 51°F | 53°F | ♻️ Active | ~14 weeks |
| Apr | 62°F | 60°F | ♻️ Active | ~14 weeks |
| May | 71°F | 68°F | 🔥 Peak | ~8 weeks |
| Jun | 82°F | 75°F | 🔥 Peak | ~8 weeks |
| Jul | 90°F | 82°F | 🔥 Peak | ~8 weeks |
| Aug | 90°F | 85°F | 🔥 Peak | ~8 weeks |
| Sep | 86°F | 82°F | 🔥 Peak | ~8 weeks |
| Oct | 73°F | 76°F | 🔥 Peak | ~8 weeks |
| Nov | 60°F | 66°F | ♻️ Active | ~14 weeks |
| Dec | 48°F | 57°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 Tillamook 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 | High | May, Jun, Jul |
| Stink bugs | High | Apr, May, Jun, Jul, Aug, Sep, Oct |
| Whiteflies | Moderate | May, Jun, Jul, Aug, Sep, Oct |
| Spider mites | High | Jun, Jul, Aug, Sep |
| Fire ants | Low | Mar, Apr, May, Jun, Jul, Aug, Sep, Oct |
Organic pest management tips
- Use row covers on susceptible crops during peak pest months
- Apply neem oil preventatively every 7-14 days during active pest season
- Interplant with strong-scented herbs (basil, marigold) to confuse pests
- Hand-pick larger pests (beetles, caterpillars) in early morning when they're sluggish
- Practice crop rotation — never plant the same family in the same spot within 3 years
- Watch for powdery mildew, downy mildew, blight — common in your climate
Cover Crops for Tillamook 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 26 | Aug 20 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Cowpeas (southern peas) | Apr 23 | Sep 3 | ✓ Yes | Excellent nitrogen fixer for warm climates, edible |
| Sorghum-sudan grass | Apr 25 | Aug 20 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | Mar 21 | Sep 3 | ✓ 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 10 | Oct 8 | — | 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 | Sep 2 | Mar 29 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Crimson clover | Aug 25 | Mar 29 | ✓ Yes | Fixes nitrogen, attracts pollinators in spring |
| Daikon radish | Sep 2 | Mar 29 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Aug 15 | Mar 29 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Sep 28 | Apr 5 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Aug 5 | Apr 5 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Jul 23 | Mar 29 | — | 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: 8 mph Winter: 14 mph
Prevailing wind: SW. Moderate wind — consider a temporary windbreak for young seedlings.
Windbreak Benefit
5/10
Moderately beneficial — a simple fence or trellis can protect delicate crops from wind stress.
Frost Pocket Risk
Moderate
Some terrain variation (536 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
20,384 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 2,000 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 40.9 inches of rain per year
- A 1,000 sq ft roof can collect roughly 20,384 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 Tillamook County
Soil Type
Silt Loam
Soil pH 5.3–6.5 · Moderately 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. (40.8 in. annual rainfall)
Season Tips
193-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.
Free Garden Planner
Plan your entire garden season — organize planting dates, track what you're growing, and know exactly when to start seeds, transplant, and harvest.
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 Tillamook County
115 vegetables that grow well in Zone 8b with planting dates for Tillamook County.
Show all 115 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Acorn Squash | Mar 22 | Apr 26 | May 3 | Jul 26 – Aug 30 | 80–100 |
| Amaranth | Mar 1 | Apr 26 | May 3 | Aug 2 – Sep 20 | 90–120 |
| Artichoke | — | — | May 3 | Sep 6 – Nov 15 | 120–180 |
| Arugula | Mar 15 | Apr 5 | Apr 19 | May 24 – Jul 26 | 30–50 |
| Asparagus | — | — | May 3 | — | 730–1095 |
| Beets | — | Apr 5 | — | May 31 – Jun 28 | 50–70 |
| Belgian Endive | Mar 15 | Apr 5 | Apr 19 | Aug 9 – Oct 4 | 110–150 |
| Bitter Melon | Mar 1 | Apr 26 | May 3 | Jul 5 – Aug 16 | 60–90 |
| Black Beans | — | Apr 26 | — | Jul 26 – Sep 13 | 90–120 |
| Bok Choy | Mar 15 | Apr 5 | Apr 19 | May 31 – Jul 5 | 40–60 |
| Broccoli | Mar 15 | Apr 5 | Apr 19 | Jun 21 – Aug 2 | 60–90 |
| Broccoli Rabe | Mar 15 | Apr 5 | Apr 19 | May 31 – Jul 5 | 40–60 |
| Brussels Sprouts | Mar 15 | Apr 5 | Apr 19 | Jul 19 – Sep 13 | 90–130 |
| Butternut Squash | Mar 22 | Apr 26 | May 3 | Aug 2 – Sep 6 | 85–110 |
| Cabbage | Mar 15 | Apr 5 | Apr 19 | Jun 21 – Aug 16 | 60–100 |
| Calabash | Mar 1 | Apr 26 | May 3 | Jul 26 – Sep 20 | 80–120 |
| Cardoon | — | — | May 3 | Sep 6 – Oct 18 | 120–150 |
| Carrots | — | Apr 5 | — | Jun 7 – Jul 12 | 60–80 |
| Cauliflower | Mar 15 | Apr 5 | Apr 19 | Jun 14 – Aug 16 | 55–100 |
| Celeriac | Mar 15 | Apr 5 | Apr 19 | Aug 2 – Sep 6 | 100–120 |
| Celery | Mar 15 | Apr 5 | Apr 19 | Jul 12 – Sep 6 | 80–120 |
| Celtuce | Mar 15 | Apr 5 | Apr 19 | Jun 21 – Aug 2 | 60–90 |
| Chard | Mar 15 | Apr 5 | Apr 19 | Jun 14 – Aug 2 | 50–60 |
| Chayote | Mar 1 | Apr 26 | May 3 | Sep 6 – Nov 15 | 120–180 |
| Chickpeas | Mar 15 | Apr 5 | Apr 19 | Jul 12 – Aug 23 | 80–110 |
| Chicory | Mar 15 | Apr 5 | Apr 19 | Jun 21 – Aug 2 | 60–85 |
| Chinese Cabbage | Mar 15 | Apr 5 | Apr 19 | Jun 14 – Jul 12 | 50–70 |
| Christmas Lima Beans | Mar 1 | Apr 26 | May 3 | Jul 26 – Aug 30 | 80–100 |
| Collard Greens | Mar 15 | Apr 5 | Apr 19 | Jun 14 – Aug 16 | 55–75 |
| Corn | — | Apr 26 | — | Jun 28 – Aug 23 | 60–100 |
| Cowpeas | — | Apr 26 | — | Jun 28 – Aug 9 | 60–90 |
| Cress | Mar 15 | Apr 5 | Apr 19 | May 3 – May 24 | 14–21 |
| Crookneck Squash | Mar 22 | Apr 26 | May 3 | Jun 21 – Jul 19 | 45–60 |
| Crosne | — | Apr 5 | — | Sep 6 – Nov 8 | 150–200 |
| Cucumber | Mar 22 | Apr 26 | May 3 | Jun 28 – Aug 23 | 50–70 |
| Daikon | — | Apr 5 | — | May 31 – Jun 28 | 50–70 |
| Delicata Squash | Mar 22 | Apr 26 | May 3 | Jul 26 – Aug 30 | 80–100 |
| Edamame | — | Apr 26 | — | Jul 12 – Aug 23 | 75–100 |
| Eggplant | Feb 15 | Apr 26 | May 3 | Jul 12 – Sep 13 | 65–85 |
| Endive | Mar 15 | Apr 5 | Apr 19 | Jun 7 – Jul 12 | 45–65 |
| Escarole | Mar 15 | Apr 5 | Apr 19 | Jun 14 – Jul 12 | 50–70 |
| Fava Beans | Mar 15 | Apr 5 | Apr 19 | Jul 5 – Aug 16 | 75–100 |
| Fennel | Mar 1 | Apr 26 | May 3 | Jul 5 – Aug 16 | 60–90 |
| Garlic | — | — | — | — | 90–240 |
| Ginger | Mar 1 | Apr 26 | May 3 | Jan 3 – Jan 17 | 240–300 |
| Green Beans | — | Apr 26 | — | Jun 21 – Aug 16 | 50–65 |
| Horseradish | — | — | May 3 | Sep 6 – Nov 15 | 120–180 |
| Hot Peppers | Feb 15 | Apr 26 | May 3 | Jul 12 – Oct 18 | 70–120 |
| Hubbard Squash | Mar 22 | Apr 26 | May 3 | Aug 16 – Sep 20 | 100–120 |
| Jicama | Mar 1 | Apr 26 | May 3 | Sep 6 – Nov 15 | 120–180 |
| Kabocha | Mar 22 | Apr 26 | May 3 | Aug 2 – Aug 30 | 85–100 |
| Kai Lan | Mar 15 | Apr 5 | Apr 19 | Jun 7 – Jul 5 | 45–60 |
| Kale | Mar 15 | Apr 5 | Apr 19 | Jun 14 – Aug 9 | 50–70 |
| Kidney Beans | — | Apr 26 | — | Jul 26 – Aug 30 | 85–110 |
| Kohlrabi | Mar 15 | Apr 5 | Apr 19 | Jun 7 – Jul 12 | 45–65 |
| Komatsuna | Mar 15 | Apr 5 | Apr 19 | May 24 – Jun 28 | 35–50 |
| Leeks | Mar 15 | Apr 5 | Apr 19 | Jul 19 – Oct 4 | 90–150 |
| Lentils | Mar 15 | Apr 5 | Apr 19 | Jul 12 – Aug 23 | 80–110 |
| Lettuce | Mar 15 | Apr 5 | Apr 19 | May 24 – Aug 2 | 30–60 |
| Lima Beans | — | Apr 26 | — | Jun 28 – Aug 9 | 60–90 |
| Loofah | Mar 1 | Apr 26 | May 3 | Aug 16 – Oct 18 | 100–150 |
| Luffa | Mar 1 | Apr 26 | May 3 | Aug 2 – Oct 18 | 90–150 |
| Mache | Mar 15 | Apr 5 | Apr 19 | May 31 – Jul 5 | 40–60 |
| Malabar Spinach | Mar 1 | Apr 26 | May 3 | Jun 28 – Jul 26 | 55–70 |
| Melon | Mar 22 | Apr 26 | May 3 | Jul 12 – Aug 30 | 70–100 |
| Microgreens | Mar 15 | Apr 5 | Apr 19 | Apr 26 – May 24 | 7–21 |
| Mitsuba | Mar 15 | Apr 5 | Apr 12 | Jun 7 – Aug 2 | 50–70 |
| Mizuna | Mar 15 | Apr 5 | Apr 19 | May 24 – Jun 21 | 30–45 |
| Mustard Greens | Mar 15 | Apr 5 | Apr 19 | May 24 – Jul 26 | 30–50 |
| Napa Cabbage | Mar 15 | Apr 5 | Apr 19 | Jun 14 – Jul 19 | 55–75 |
| New Zealand Spinach | Mar 1 | Apr 26 | May 3 | Jun 28 – Jul 26 | 55–70 |
| Okra | Mar 1 | Apr 26 | May 3 | Jun 28 – Aug 23 | 50–65 |
| Onion | Mar 15 | Apr 5 | Apr 19 | Jul 19 – Sep 6 | 90–120 |
| Pac Choi | Mar 15 | Apr 5 | Apr 19 | May 31 – Jun 28 | 40–55 |
| Parsnip | — | Apr 5 | — | Jul 19 – Aug 30 | 100–130 |
| Patty Pan Squash | Mar 22 | Apr 26 | May 3 | Jun 21 – Jul 19 | 45–60 |
| Peas | Mar 15 | Apr 5 | Apr 19 | Jun 14 – Aug 9 | 55–70 |
| Peppers | Feb 15 | Apr 26 | May 3 | Jul 5 – Sep 13 | 60–90 |
| Pole Beans | Mar 1 | Apr 26 | May 3 | Jun 28 – Aug 23 | 55–70 |
| Potatoes | Mar 1 | Apr 26 | May 3 | Jul 12 – Sep 20 | 70–120 |
| Pumpkin | Mar 22 | Apr 26 | May 3 | Aug 2 – Sep 20 | 85–120 |
| Purslane | Mar 15 | Apr 5 | Apr 19 | May 31 – Jul 5 | 40–60 |
| Radicchio | Mar 15 | Apr 5 | Apr 19 | Jun 21 – Jul 26 | 60–80 |
| Radish | — | Apr 5 | — | May 3 – May 24 | 22–35 |
| Rhubarb | — | — | May 10 | — | 365–730 |
| Romanesco | Mar 15 | Apr 5 | Apr 19 | Jul 5 – Aug 16 | 75–100 |
| Rutabaga | — | Apr 5 | — | Jun 28 – Aug 2 | 80–100 |
| Salsify | — | Apr 5 | — | Jul 19 – Aug 30 | 100–130 |
| Savoy Cabbage | Mar 15 | Apr 5 | Apr 19 | Jun 28 – Aug 23 | 70–110 |
| Scallions | Mar 15 | Apr 5 | Apr 19 | Jun 14 – Jul 12 | 50–70 |
| Scarlet Runner Beans | Mar 1 | Apr 26 | May 3 | Jul 5 – Aug 9 | 60–80 |
| Shallot | Mar 15 | Apr 5 | Apr 19 | Jul 19 – Sep 6 | 90–120 |
| Shiso | Mar 1 | Apr 26 | May 3 | Jun 28 – Aug 23 | 50–70 |
| Snap Peas | Mar 1 | Apr 26 | May 3 | Jun 28 – Aug 23 | 55–70 |
| Snow Peas | Mar 15 | Apr 5 | Apr 19 | Jun 14 – Aug 9 | 50–65 |
| Soybeans | — | Apr 26 | — | Jul 19 – Sep 13 | 80–120 |
| Spaghetti Squash | Mar 22 | Apr 26 | May 3 | Aug 2 – Aug 30 | 85–100 |
| Spinach | Mar 15 | Apr 5 | Apr 19 | May 24 – Jul 26 | 35–50 |
| Squash (Summer) | Mar 22 | Apr 26 | May 3 | Jun 21 – Aug 23 | 45–65 |
| Squash (Winter) | Mar 22 | Apr 26 | May 3 | Jul 26 – Sep 20 | 80–120 |
| Sunchoke | — | — | May 3 | Aug 23 – Oct 18 | 110–150 |
| Sunflower | Mar 1 | Apr 26 | May 3 | Jul 12 – Aug 30 | 70–100 |
| Sweet Corn | — | Apr 26 | — | Jun 28 – Aug 9 | 60–90 |
| Sweet Potatoes | Mar 1 | Apr 26 | May 3 | Aug 2 – Sep 20 | 90–120 |
| Tatsoi | Mar 15 | Apr 5 | Apr 19 | May 24 – Jun 28 | 35–50 |
| Tomatillo | Mar 1 | Apr 26 | May 3 | Jul 5 – Sep 13 | 60–85 |
| Tomatoes | Mar 1 | Apr 26 | May 3 | Jul 5 – Sep 13 | 60–85 |
| Turmeric | Mar 1 | Apr 26 | May 3 | Jan 3 – Jan 17 | 240–300 |
| Turnip | — | Apr 5 | — | May 17 – Jun 21 | 40–60 |
| Watercress | Mar 15 | Apr 5 | Apr 19 | May 31 – Jul 5 | 40–60 |
| Watermelon | Mar 22 | Apr 26 | May 3 | Jul 12 – Aug 30 | 70–100 |
| Wax Beans | — | Apr 26 | — | Jun 21 – Aug 16 | 50–65 |
| Winter Melon | Mar 1 | Apr 26 | May 3 | Aug 2 – Sep 20 | 90–120 |
| Yard Long Beans | Mar 1 | Apr 26 | May 3 | Jun 28 – Aug 9 | 55–80 |
| Zucchini | Mar 22 | Apr 26 | May 3 | Jun 21 – Aug 16 | 45–60 |
🍓 Fruits to Grow in Tillamook County
27 fruits that grow well in Zone 8b with planting dates for Tillamook County.
Show all 27 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Alpine Strawberries | — | — | May 10 | Aug 9 – Nov 22 | 90–180 |
| Aronia | — | — | May 10 | — | 730–1095 |
| Blackberries | — | — | May 10 | — | 365–730 |
| Blueberries | — | — | May 10 | — | 730–1095 |
| Boysenberries | — | — | May 10 | — | 365–730 |
| Cantaloupe | — | — | May 10 | Jul 19 – Aug 23 | 70–90 |
| Che Fruit | — | — | May 10 | — | 1095–1825 |
| Elderberries | — | — | May 10 | — | 730–1095 |
| Figs | — | — | May 10 | — | 730–1825 |
| Goji Berries | — | — | May 10 | — | 730–1095 |
| Gooseberries | — | — | May 10 | — | 730–1095 |
| Grapes | — | — | May 10 | — | 730–1095 |
| Ground Cherry | — | — | May 10 | Jul 19 – Sep 13 | 65–80 |
| Hardy Kiwi | — | — | May 10 | — | 1095–1825 |
| Honeydew | — | — | May 10 | Aug 2 – Sep 13 | 80–110 |
| Jostaberry | — | — | May 10 | — | 730–1095 |
| Kiwi | — | — | May 10 | — | 1095–1825 |
| Loquat | — | — | May 10 | — | 730–1825 |
| Medlar | — | — | May 10 | — | 1095–1825 |
| Mulberries | — | — | May 10 | — | 730–1825 |
| Pawpaw | — | — | May 10 | — | 1095–2555 |
| Persimmon | — | — | May 10 | — | 1095–2555 |
| Pomegranate | — | — | May 10 | — | 730–1095 |
| Quince | — | — | May 10 | — | 1095–1825 |
| Raspberries | — | — | May 10 | — | 365–730 |
| Serviceberries | — | — | May 10 | — | 730–1095 |
| Strawberries | — | — | May 10 | Aug 9 – Jan 24 | 90–365 |
🌿 Herbs to Grow in Tillamook County
42 herbs that grow well in Zone 8b with planting dates for Tillamook County.
Show all 42 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Angelica | Mar 15 | Apr 5 | Apr 12 | — | 365–730 |
| Anise | Mar 15 | Apr 5 | Apr 12 | Jul 12 – Sep 27 | 90–120 |
| Basil | Mar 1 | Apr 26 | May 3 | Jun 28 – Aug 30 | 50–75 |
| Bee Balm | — | — | Apr 26 | Jul 26 – Oct 11 | 90–120 |
| Borage | Mar 15 | Apr 5 | Apr 12 | Jun 7 – Jul 26 | 50–60 |
| Caraway | Mar 15 | Apr 5 | Apr 12 | — | 365–450 |
| Catnip | — | — | Apr 26 | Jun 28 – Aug 30 | 60–80 |
| Chamomile | Mar 15 | Apr 5 | Apr 12 | Jun 14 – Aug 23 | 60–90 |
| Chervil | Mar 15 | Apr 5 | Apr 12 | May 24 – Jul 26 | 40–60 |
| Chives | — | — | Apr 26 | Jun 28 – Sep 6 | 60–90 |
| Cilantro | Mar 15 | Apr 5 | Apr 12 | May 24 – Jul 26 | 40–60 |
| Comfrey | — | — | Apr 26 | Jun 28 – Sep 6 | 60–90 |
| Cumin | Mar 15 | Apr 5 | Apr 12 | Jul 26 – Sep 27 | 100–120 |
| Dill | Mar 15 | Apr 5 | Apr 12 | May 24 – Jul 26 | 40–60 |
| Echinacea | — | — | Apr 26 | Aug 30 – Dec 6 | 120–180 |
| Epazote | Mar 1 | Apr 26 | May 3 | Jun 21 – Aug 16 | 45–60 |
| Fennel (herb) | Mar 15 | Apr 5 | Apr 12 | Jun 14 – Aug 23 | 60–90 |
| Feverfew | — | — | Apr 26 | Jul 26 – Oct 11 | 90–120 |
| Garlic Chives | — | — | Apr 26 | Jun 28 – Sep 6 | 60–90 |
| Horehound | — | — | Apr 26 | Jul 12 – Sep 6 | 75–90 |
| Hyssop | — | — | Apr 26 | Jul 5 – Sep 6 | 70–90 |
| Lavender | — | — | Apr 26 | Jul 26 – Dec 27 | 90–200 |
| Lemon Balm | — | — | Apr 26 | Jun 28 – Aug 16 | 60–70 |
| Lemon Thyme | — | — | Apr 26 | Jul 5 – Sep 6 | 70–90 |
| Lemon Verbena | Mar 1 | Apr 26 | May 3 | Jul 5 – Sep 13 | 60–90 |
| Lemongrass | Mar 1 | Apr 26 | May 3 | Jul 19 – Oct 18 | 75–120 |
| Lovage | — | — | Apr 26 | Jul 5 – Sep 6 | 70–90 |
| Marjoram | — | — | Apr 26 | Jun 28 – Sep 6 | 60–90 |
| Mint | — | — | Apr 26 | Jun 28 – Sep 6 | 60–90 |
| Oregano | — | — | Apr 26 | Jun 28 – Sep 6 | 60–90 |
| Parsley | Mar 15 | Apr 5 | Apr 12 | Jun 14 – Aug 16 | 60–80 |
| Rosemary | — | — | Apr 26 | Jul 19 – Dec 6 | 80–180 |
| Rue | — | — | Apr 26 | Jul 5 – Sep 6 | 70–90 |
| Sage | — | — | Apr 26 | Jul 12 – Sep 6 | 75–90 |
| Savory | — | — | Apr 26 | Jun 21 – Aug 16 | 50–70 |
| Sorrel | Mar 15 | Apr 5 | Apr 12 | May 24 – Jul 26 | 40–60 |
| Stevia | Mar 1 | Apr 26 | May 3 | Jul 5 – Sep 13 | 60–90 |
| Tarragon | — | — | Apr 26 | Jun 28 – Sep 6 | 60–90 |
| Thai Basil | Mar 1 | Apr 26 | May 3 | Jun 28 – Aug 30 | 50–75 |
| Thyme | — | — | Apr 26 | Jul 5 – Sep 6 | 70–90 |
| Valerian | — | — | Apr 26 | Aug 30 – Dec 6 | 120–180 |
| Yarrow | — | — | Apr 26 | Jul 26 – Oct 11 | 90–120 |
Monthly Planting Guide for Tillamook County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Tillamook County.
Frequently Asked Questions
What planting zone is Tillamook County, OR?
Tillamook County is in USDA Hardiness Zone 8b. 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 Tillamook County, OR?
Based on 31 years of NOAA weather station data, the median last spring frost in Tillamook County falls around April 19. In 8 out of 10 years, last frost lands between March 26 and May 8 — a 42-day window of variability. Use May 8 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in Tillamook County, OR?
The median first fall frost in Tillamook County arrives around October 29. In cold years it can arrive as early as October 11; in mild years as late as November 16. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Tillamook County?
Tillamook County has a frost-free growing season of approximately 193 days. This is enough time for most warm-season crops including tomatoes, peppers, and squash with proper timing. Climate records show the growing season is trending longer by about 2.61 days per decade.
What is the soil like in Tillamook County for gardening?
Tillamook County has predominantly Silt Loam soil with a pH range of 5.3–6.5 and Moderately Well Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.
What is grown commercially in Tillamook County?
Tillamook County has commercial agriculture that includes Wheat, Hay, Potatoes, Apples. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is Tillamook County a good location for home gardening?
Tillamook 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.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Tillamook County gardeners in Zone 8b organize planting dates, track what's growing, and never miss a planting window.
Get Your Free Garden Planner →Free download. Plan your entire garden season in minutes.
