Seaside, OR — Planting Guide for July
Free PDF, personalized for your town's frost dates & climate. Drop your email — we'll send the link.
What to do in July
Your garden in Clatsop County, Oregon is working on a schedule, even when you're not. Here's where you should be this July.
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It's harvest week for basil, cucumber, and green beans
This is the payoff month. Bring a basket, bring a friend, and get into the beds.
To set up a strong August, finish these tasks
- First harvests: basil, cucumber, and green beans
- Fall sowing: bachelor's button, calendula, and california poppy
Seaside gardens in a wet, humid climate (73" annually). Cool-season crops like peas, lettuce, kale, and brassicas thrive in spring and fall. The biggest challenges are fungal disease and humidity-loving pests in summer — leaf spot, blight, squash bugs, vine borers. Drip irrigation (not overhead), wide plant spacing for air circulation, and disease-resistant varieties make the difference.
Soils trend Silt Loam — the gold standard for vegetables. Add 2–3" of compost annually to maintain it and you'll outgrow most of your neighbors.
Drought pressure is moderate (15.1 weeks/year on average). Mulching and drip irrigation pay for themselves quickly.
🌡️ USDA Zone
9a (20°F to 25°F min)
❄️ Avg. Last Frost
April 12
🍂 Avg. First Frost
November 4
📅 Growing Season
206 days
🌧️ Climate
Very Humid 73.3" annual
💨 Wind
Moderate 7.5 mph avg
🥶 Frost Tier
Regular 0% frost-free years
🏜️ Drought
15.1 wk/yr trend worsening
📍 ZIP Codes
1 ZIP
Monthly Watering Calendar for Seaside
When you'll need to water your garden — based on average monthly rainfall vs. the ~1 inch/week most gardens need.
What this means for you: In Seaside, the watering question isn't "how often" — it's "is the soil moist 4 inches down?" Stick a finger in. Dry? Water. Damp? Wait. The 73" annual rainfall is just the starting context.
View detailed monthly data
| Month | Avg Rainfall | Rainy Days | Extra Water Needed | Watering Effort |
|---|---|---|---|---|
| Jan | 8.4 in | 19 days | — | None |
| Feb | 5.2 in | 14 days | — | Low |
| Mar | 4.8 in | 17 days | — | Low |
| Apr | 3.8 in | 11 days | 0.5 in | Low |
| May | 3.6 in | 10 days | 0.7 in | Moderate |
| Jun | 2.1 in | 6 days | 2.2 in | High |
| Jul | 0.9 in | 3 days | 3.4 in | Critical |
| Aug | 1.1 in | 2 days | 3.2 in | Critical |
| Sep | 2.4 in | 5 days | 1.9 in | High |
| Oct | 4.2 in | 12 days | 0.1 in | Low |
| Nov | 8.4 in | 18 days | — | Low |
| Dec | 9.3 in | 20 days | — | None |
Annual total: 54.2 in. Water needs vary by crop — tomatoes need ~1.2"/week while herbs like rosemary need only 0.3"/week. Check individual plant pages for crop-specific water budgets that factor in your county's rainfall and soil drainage.
Seaside Soil Profile
Soil Type
Silt Loam
Soil pH
5.6-6.7
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 30 | Nov 30 | 214 days |
| Cautious | Apr 18 | Nov 13 | 209 days |
| Average year | Apr 12 | Nov 4 | 206 days |
| Optimistic | Apr 1 | Oct 28 | 210 days |
| Aggressive (risky) | Mar 17 | Oct 13 | 210 days |
Not very — frost dates can vary by ±44 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 1.9 days per decade). Spring is arriving earlier than it used to. Good news for gardeners.
Gardening Difficulty Score
Clatsop County offers good growing conditions. A little planning around frost dates goes a long way.
Local Gardening Help in Clatsop 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 Clatsop County's climate and soil.
County Extension Office
Clatsop 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 Clatsop County
Finding local nurseries & garden centers in Clatsop County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Clatsop 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 Clatsop County OR" or "garden center Clatsop 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 Clatsop County OR" or check your extension office and local parks department. Facebook groups like "Clatsop 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 in Seaside
Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.
For new gardeners: You can't change the sun. Picking the right day-length-matched varieties for Seaside matters more than any other "fix" you make — and the seed packet tells you (look for "long-day," "short-day," "day-neutral").
Longest Day
15.5 hours
Summer solstice daylight
Shortest Day
8.5 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 | 8.8 hr | 2.2 hr | Short day |
| February | 10.1 hr | 3.1 hr | Short day |
| March | 11.6 hr | 3.9 hr | Short day |
| April | 13.3 hr | 5.6 hr | Neutral |
| May | 14.8 hr | 7.1 hr | Long day |
| June | 15.5 hr | 8.9 hr | Long day |
| July | 15.2 hr | 10.5 hr | Long day |
| August | 14 hr | 9.2 hr | Long day |
| September | 12.3 hr | 7.5 hr | Neutral |
| October | 10.7 hr | 4.1 hr | Short day |
| November | 9.2 hr | 2.3 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 in Seaside
Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.
Quick context: Soil temperature predicts plant emergence better than calendar dates. Seaside's spring soil warm-up curve tells you which weeks are safe for direct-sow beans, cucumbers, squash, and corn.
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
8 months
Nearly year-round composting.
View detailed monthly data
| Month | Soil 4" Deep | Soil 8" Deep | Compost Activity | Time to Finish |
|---|---|---|---|---|
| Jan | 44°F | 51°F | 🐢 Slow | ~24 weeks |
| Feb | 43°F | 49°F | 🐢 Slow | ~24 weeks |
| Mar | 49°F | 55°F | 🐢 Slow | ~24 weeks |
| Apr | 60°F | 60°F | ♻️ Active | ~14 weeks |
| May | 73°F | 69°F | 🔥 Peak | ~8 weeks |
| Jun | 80°F | 76°F | 🔥 Peak | ~8 weeks |
| Jul | 90°F | 84°F | 🔥 Peak | ~8 weeks |
| Aug | 91°F | 85°F | 🔥 Peak | ~8 weeks |
| Sep | 85°F | 83°F | 🔥 Peak | ~8 weeks |
| Oct | 71°F | 76°F | 🔥 Peak | ~8 weeks |
| Nov | 60°F | 66°F | ♻️ Active | ~14 weeks |
| Dec | 50°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 Seaside
Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.
Quick context: High pest pressure means weekly inspection. Low pest pressure means monthly. The score tells you which routine to set up before you have a problem.
Insect Pest Pressure
High — expect multiple pest generations. Preventative measures essential.
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 Seaside
Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with planting dates calibrated for your area.
For new gardeners: A fall-planted cover crop in Seaside 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 (4 options) — Build soil before the main growing season
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Buckwheat | Apr 15 | Aug 26 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Cowpeas (southern peas) | Apr 20 | Sep 2 | ✓ Yes | Excellent nitrogen fixer for warm climates, edible |
| Sorghum-sudan grass | Apr 23 | Aug 26 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | Mar 16 | Sep 9 | ✓ 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 13 | Oct 21 | — | 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 30 | Mar 22 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Crimson clover | Sep 11 | Mar 29 | ✓ Yes | Fixes nitrogen, attracts pollinators in spring |
| Daikon radish | Sep 13 | Mar 22 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Aug 23 | Mar 29 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Oct 9 | Mar 22 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Aug 9 | Mar 22 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Jul 28 | Mar 29 | — | Erosion control, weed suppression, good biomass |
Wind & Microclimate in Seaside
Why this matters: Wind dries soil, knocks over young transplants, and disrupts pollination for bees and butterflies. Seaside averages 7.5 mph — above 10 mph means windbreaks (shrubs, fences, taller crops to windward), staked tomatoes from day one, and an extra round of watering during dry windy spells. Lower wind = lower water bills and fewer broken stems.
Wind dries soil, stresses plants, and affects frost patterns. Understanding your exposure helps with garden placement.
Seasonal Wind Speed
Spring: 13 mph Summer: 10 mph
Fall: 8 mph Winter: 13 mph
Prevailing wind: SW. Moderate wind — consider a temporary windbreak for young seedlings.
Windbreak Benefit
4.6/10
Moderately beneficial — a simple fence or trellis can protect delicate crops from wind stress.
Frost Pocket Risk
Moderate
Some terrain variation (918 ft range). Garden on slopes or higher ground if possible to avoid late-season frost pockets.
Rainwater Harvesting in Seaside
How much water you can collect, when to collect it, and what size system you need for your garden.
What this means for you: A 1,000 sq ft roof captures about 600 gallons from a single 1" rainfall. Seaside gets 73" of rain a year — a couple of well-placed rain barrels can cover most summer watering. In dry climates the math's even better: every captured gallon is one you don't buy.
Annual Collection
27,013 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 1,000 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
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 54.2 inches of rain per year
- A 1,000 sq ft roof can collect roughly 27,013 gallons annually
- Rainwater harvesting is fully legal in your state
- Your area gets ample rainfall — even small barrels make a big difference
- Consider a rain garden to handle overflow during heavy rainfall months
🥬 Vegetables to Grow in Seaside
114 vegetables matched to Zone 9a with planting dates calibrated for Seaside.
Show all 114 vegetables with dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Acorn Squash | Mar 15 | Apr 12 | Apr 19 | — | Jul 12 – Aug 16 | 80–100 |
| Amaranth | Mar 1 | Apr 12 | Apr 19 | — | Jul 19 – Sep 6 | 90–120 |
| Artichoke | — | — | Apr 26 | — | Aug 30 – Nov 8 | 120–180 |
| Arugula | Mar 15 | Mar 22 | Apr 12 | Sep 9 | May 17 – Jul 19 | 30–50 |
| Asparagus | — | — | Apr 26 | — | — | 730–1095 |
| Beets | — | Mar 22 | — | Sep 9 | May 17 – Jun 14 | 50–70 |
| Belgian Endive | Mar 15 | Mar 22 | Apr 12 | Sep 9 | Aug 2 – Sep 27 | 110–150 |
| Bitter Melon | Mar 1 | Apr 12 | Apr 19 | — | Jun 21 – Aug 2 | 60–90 |
| Black Beans | — | Apr 19 | — | — | Jul 19 – Sep 6 | 90–120 |
| Bok Choy | Mar 15 | Mar 22 | Apr 12 | Sep 9 | May 24 – Jun 28 | 40–60 |
| Broccoli | Mar 15 | Mar 22 | Apr 12 | Sep 9 | Jun 14 – Jul 26 | 60–90 |
| Broccoli Rabe | Mar 15 | Mar 22 | Apr 12 | Sep 9 | May 24 – Jun 28 | 40–60 |
| Brussels Sprouts | Mar 15 | Mar 22 | Apr 12 | Sep 9 | Jul 12 – Sep 6 | 90–130 |
| Butternut Squash | Mar 15 | Apr 12 | Apr 19 | — | Jul 19 – Aug 23 | 85–110 |
| Cabbage | Mar 15 | Mar 22 | Apr 12 | Sep 9 | Jun 14 – Aug 9 | 60–100 |
| Calabash | Mar 1 | Apr 12 | Apr 19 | — | Jul 12 – Sep 6 | 80–120 |
| Cardoon | — | — | Apr 26 | — | Aug 30 – Oct 11 | 120–150 |
| Carrots | — | Mar 22 | — | Sep 9 | May 24 – Jun 28 | 60–80 |
| Cauliflower | Mar 15 | Mar 22 | Apr 12 | Sep 9 | Jun 7 – Aug 9 | 55–100 |
| Celeriac | Mar 15 | Mar 22 | Apr 12 | Sep 9 | Jul 26 – Aug 30 | 100–120 |
| Celery | Mar 15 | Mar 22 | Apr 12 | Sep 9 | Jul 5 – Aug 30 | 80–120 |
| Celtuce | Mar 15 | Mar 22 | Apr 12 | Sep 9 | Jun 14 – Jul 26 | 60–90 |
| Chard | Mar 15 | Mar 22 | Apr 12 | Sep 9 | Jun 7 – Jul 26 | 50–60 |
| Chayote | Mar 1 | Apr 12 | Apr 19 | — | Aug 23 – Nov 1 | 120–180 |
| Chickpeas | Mar 15 | Mar 22 | Apr 12 | Sep 9 | Jul 5 – Aug 16 | 80–110 |
| Chicory | Mar 15 | Mar 22 | Apr 12 | Sep 9 | Jun 14 – Jul 26 | 60–85 |
| Chinese Cabbage | Mar 15 | Mar 22 | Apr 12 | Sep 9 | Jun 7 – Jul 5 | 50–70 |
| Christmas Lima Beans | Mar 1 | Apr 12 | Apr 19 | — | Jul 12 – Aug 16 | 80–100 |
| Collard Greens | Mar 15 | Mar 22 | Apr 12 | Sep 9 | Jun 7 – Aug 9 | 55–75 |
| Corn | — | Apr 19 | — | — | Jun 21 – Aug 16 | 60–100 |
| Cowpeas | — | Apr 19 | — | — | Jun 21 – Aug 2 | 60–90 |
| Cress | Mar 15 | Mar 22 | Apr 12 | Sep 9 | Apr 26 – May 17 | 14–21 |
| Crookneck Squash | Mar 15 | Apr 12 | Apr 19 | — | Jun 7 – Jul 5 | 45–60 |
| Crosne | — | Mar 22 | — | Sep 9 | Aug 23 – Oct 25 | 150–200 |
| Cucumber | Mar 15 | Apr 12 | Apr 19 | — | Jun 14 – Aug 9 | 50–70 |
| Daikon | — | Mar 22 | — | Sep 9 | May 17 – Jun 14 | 50–70 |
| Delicata Squash | Mar 15 | Apr 12 | Apr 19 | — | Jul 12 – Aug 16 | 80–100 |
| Edamame | — | Apr 19 | — | — | Jul 5 – Aug 16 | 75–100 |
| Eggplant | Mar 1 | Apr 12 | Apr 19 | — | Jun 28 – Aug 30 | 65–85 |
| Endive | Mar 15 | Mar 22 | Apr 12 | Sep 9 | May 31 – Jul 5 | 45–65 |
| Escarole | Mar 15 | Mar 22 | Apr 12 | Sep 9 | Jun 7 – Jul 5 | 50–70 |
| Fava Beans | Mar 15 | Mar 22 | Apr 12 | Sep 9 | Jun 28 – Aug 9 | 75–100 |
| Fennel | Mar 1 | Apr 12 | Apr 19 | — | Jun 21 – Aug 2 | 60–90 |
| Garlic | — | — | — | Sep 23 | Dec 23 – Jun 9 | 90–240 |
| Ginger | Mar 1 | Apr 12 | Apr 19 | — | Dec 20 – Feb 14 | 240–300 |
| Green Beans | — | Apr 19 | — | — | Jun 14 – Aug 9 | 50–65 |
| Horseradish | — | — | Apr 26 | — | Aug 30 – Nov 8 | 120–180 |
| Hot Peppers | Mar 1 | Apr 12 | Apr 19 | — | Jun 28 – Oct 4 | 70–120 |
| Hubbard Squash | Mar 15 | Apr 12 | Apr 19 | — | Aug 2 – Sep 6 | 100–120 |
| Jicama | Mar 1 | Apr 12 | Apr 19 | — | Aug 23 – Nov 1 | 120–180 |
| Kabocha | Mar 15 | Apr 12 | Apr 19 | — | Jul 19 – Aug 16 | 85–100 |
| Kai Lan | Mar 15 | Mar 22 | Apr 12 | Sep 9 | May 31 – Jun 28 | 45–60 |
| Kale | Mar 15 | Mar 22 | Apr 12 | Sep 9 | Jun 7 – Aug 2 | 50–70 |
| Kidney Beans | — | Apr 19 | — | — | Jul 19 – Aug 23 | 85–110 |
| Kohlrabi | Mar 15 | Mar 22 | Apr 12 | Sep 9 | May 31 – Jul 5 | 45–65 |
| Komatsuna | Mar 15 | Mar 22 | Apr 12 | Sep 9 | May 17 – Jun 21 | 35–50 |
| Leeks | Mar 15 | Mar 22 | Apr 12 | Sep 9 | Jul 12 – Sep 27 | 90–150 |
| Lentils | Mar 15 | Mar 22 | Apr 12 | Sep 9 | Jul 5 – Aug 16 | 80–110 |
| Lettuce | Mar 15 | Mar 22 | Apr 12 | Sep 9 | May 17 – Jul 26 | 30–60 |
| Lima Beans | — | Apr 19 | — | — | Jun 21 – Aug 2 | 60–90 |
| Loofah | Mar 1 | Apr 12 | Apr 19 | — | Aug 2 – Oct 4 | 100–150 |
| Luffa | Mar 1 | Apr 12 | Apr 19 | — | Jul 19 – Oct 4 | 90–150 |
| Mache | Mar 15 | Mar 22 | Apr 12 | Sep 9 | May 24 – Jun 28 | 40–60 |
| Malabar Spinach | Mar 1 | Apr 12 | Apr 19 | — | Jun 14 – Jul 12 | 55–70 |
| Melon | Mar 15 | Apr 12 | Apr 19 | — | Jun 28 – Aug 16 | 70–100 |
| Microgreens | Mar 15 | Mar 22 | Apr 12 | Sep 9 | Apr 19 – May 17 | 7–21 |
| Mitsuba | Mar 15 | Mar 22 | Apr 5 | Sep 9 | May 31 – Jul 26 | 50–70 |
| Mizuna | Mar 15 | Mar 22 | Apr 12 | Sep 9 | May 17 – Jun 14 | 30–45 |
| Mustard Greens | Mar 15 | Mar 22 | Apr 12 | Sep 9 | May 17 – Jul 19 | 30–50 |
| Napa Cabbage | Mar 15 | Mar 22 | Apr 12 | Sep 9 | Jun 7 – Jul 12 | 55–75 |
| New Zealand Spinach | Mar 1 | Apr 12 | Apr 19 | — | Jun 14 – Jul 12 | 55–70 |
| Okra | Mar 1 | Apr 12 | Apr 19 | — | Jun 14 – Aug 9 | 50–65 |
| Onion | Mar 15 | Mar 22 | Apr 12 | Sep 9 | Jul 12 – Aug 30 | 90–120 |
| Pac Choi | Mar 15 | Mar 22 | Apr 12 | Sep 9 | May 24 – Jun 21 | 40–55 |
| Parsnip | — | Mar 22 | — | Sep 9 | Jul 5 – Aug 16 | 100–130 |
| Patty Pan Squash | Mar 15 | Apr 12 | Apr 19 | — | Jun 7 – Jul 5 | 45–60 |
| Peas | Mar 15 | Mar 22 | Apr 12 | Sep 9 | Jun 7 – Aug 2 | 55–70 |
| Peppers | Mar 1 | Apr 12 | Apr 19 | — | Jun 21 – Aug 30 | 60–90 |
| Pole Beans | Mar 1 | Apr 12 | Apr 19 | — | Jun 14 – Aug 9 | 55–70 |
| Potatoes | Mar 1 | Apr 12 | Apr 19 | — | Jun 28 – Sep 6 | 70–120 |
| Pumpkin | Mar 15 | Apr 12 | Apr 19 | — | Jul 19 – Sep 6 | 85–120 |
| Purslane | Mar 15 | Mar 22 | Apr 12 | Sep 9 | May 24 – Jun 28 | 40–60 |
| Radicchio | Mar 15 | Mar 22 | Apr 12 | Sep 9 | Jun 14 – Jul 19 | 60–80 |
| Radish | — | Mar 22 | — | Sep 9 | Apr 19 – May 10 | 22–35 |
| Romanesco | Mar 15 | Mar 22 | Apr 12 | Sep 9 | Jun 28 – Aug 9 | 75–100 |
| Rutabaga | — | Mar 22 | — | Sep 9 | Jun 14 – Jul 19 | 80–100 |
| Salsify | — | Mar 22 | — | Sep 9 | Jul 5 – Aug 16 | 100–130 |
| Savoy Cabbage | Mar 15 | Mar 22 | Apr 12 | Sep 9 | Jun 21 – Aug 16 | 70–110 |
| Scallions | Mar 15 | Mar 22 | Apr 12 | Sep 9 | Jun 7 – Jul 5 | 50–70 |
| Scarlet Runner Beans | Mar 1 | Apr 12 | Apr 19 | — | Jun 21 – Jul 26 | 60–80 |
| Shallot | Mar 15 | Mar 22 | Apr 12 | Sep 9 | Jul 12 – Aug 30 | 90–120 |
| Shiso | Mar 1 | Apr 19 | Apr 19 | — | Jun 14 – Aug 9 | 50–70 |
| Snap Peas | Mar 1 | Apr 12 | Apr 19 | — | Jun 14 – Aug 9 | 55–70 |
| Snow Peas | Mar 15 | Mar 22 | Apr 12 | Sep 9 | Jun 7 – Aug 2 | 50–65 |
| Soybeans | — | Apr 19 | — | — | Jul 12 – Sep 6 | 80–120 |
| Spaghetti Squash | Mar 15 | Apr 12 | Apr 19 | — | Jul 19 – Aug 16 | 85–100 |
| Spinach | Mar 15 | Mar 22 | Apr 12 | Sep 9 | May 17 – Jul 19 | 35–50 |
| Squash (Summer) | Mar 15 | Apr 12 | Apr 19 | — | Jun 7 – Aug 9 | 45–65 |
| Squash (Winter) | Mar 15 | Apr 12 | Apr 19 | — | Jul 12 – Sep 6 | 80–120 |
| Sunchoke | — | — | Apr 26 | — | Aug 16 – Oct 11 | 110–150 |
| Sweet Corn | — | Apr 19 | — | — | Jun 21 – Aug 2 | 60–90 |
| Sweet Potatoes | Mar 1 | Apr 12 | Apr 19 | — | Jul 19 – Sep 6 | 90–120 |
| Tatsoi | Mar 15 | Mar 22 | Apr 12 | Sep 9 | May 17 – Jun 21 | 35–50 |
| Tomatillo | Mar 1 | Apr 12 | Apr 19 | — | Jun 21 – Aug 30 | 60–85 |
| Tomatoes | Mar 1 | Apr 12 | Apr 19 | — | Jun 21 – Aug 30 | 60–85 |
| Turmeric | Mar 1 | Apr 12 | Apr 19 | — | Dec 20 – Feb 14 | 240–300 |
| Turnip | — | Mar 22 | — | Sep 9 | May 3 – Jun 7 | 40–60 |
| Watercress | Mar 15 | Mar 22 | Apr 12 | Sep 9 | May 24 – Jun 28 | 40–60 |
| Watermelon | Mar 15 | Apr 12 | Apr 19 | — | Jun 28 – Aug 16 | 70–100 |
| Wax Beans | — | Apr 19 | — | — | Jun 14 – Aug 9 | 50–65 |
| Winter Melon | Mar 1 | Apr 12 | Apr 19 | — | Jul 19 – Sep 6 | 90–120 |
| Yam | Mar 1 | Apr 12 | Apr 19 | — | Oct 18 – Feb 14 | 180–330 |
| Yard Long Beans | Mar 1 | Apr 12 | Apr 19 | — | Jun 14 – Jul 26 | 55–80 |
| Zucchini | Mar 15 | Apr 12 | Apr 19 | — | Jun 7 – Aug 2 | 45–60 |
🍓 Fruits to Grow in Seaside
24 fruits matched to Zone 9a with planting dates calibrated for Seaside.
Show all 24 fruits with dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Alpine Strawberries | — | — | Apr 26 | — | Jul 26 – Nov 8 | 90–180 |
| Blackberries | — | — | Apr 26 | — | — | 365–730 |
| Boysenberries | — | — | Apr 26 | — | — | 365–730 |
| Cantaloupe | — | — | Apr 26 | — | Jul 5 – Aug 9 | 70–90 |
| Che Fruit | — | — | Apr 26 | — | — | 1095–1825 |
| Dragon Fruit | — | — | Apr 26 | — | — | 365–730 |
| Elderberries | — | — | Apr 26 | — | — | 730–1095 |
| Figs | — | — | Apr 26 | — | — | 730–1825 |
| Goji Berries | — | — | Apr 26 | — | — | 730–1095 |
| Grapes | — | — | Apr 26 | — | — | 730–1095 |
| Ground Cherry | — | — | Apr 26 | — | Jul 5 – Aug 30 | 65–80 |
| Guava | — | — | Apr 26 | — | — | 365–730 |
| Honeydew | — | — | Apr 26 | — | Jul 19 – Aug 30 | 80–110 |
| Kiwi | — | — | Apr 26 | — | — | 1095–1825 |
| Loquat | — | — | Apr 26 | — | — | 730–1825 |
| Mulberries | — | — | Apr 26 | — | — | 730–1825 |
| Passion Fruit | — | — | Apr 26 | — | — | 365–545 |
| Pawpaw | — | — | Apr 26 | — | — | 1095–2555 |
| Persimmon | — | — | Apr 26 | — | — | 1095–2555 |
| Pomegranate | — | — | Apr 26 | — | — | 730–1095 |
| Quince | — | — | Apr 26 | — | — | 1095–1825 |
| Raspberries | — | — | Apr 26 | — | — | 365–730 |
| Serviceberries | — | — | Apr 26 | — | — | 730–1095 |
| Strawberries | — | — | Apr 26 | — | Jul 26 – Feb 21 | 90–365 |
🌿 Herbs to Grow in Seaside
37 herbs matched to Zone 9a with planting dates calibrated for Seaside.
Show all 37 herbs with dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Anise | Mar 15 | Mar 22 | Apr 5 | Sep 9 | Jul 5 – Sep 20 | 90–120 |
| Basil | Mar 1 | Apr 19 | Apr 19 | — | Jun 14 – Aug 16 | 50–75 |
| Bee Balm | — | — | Apr 19 | — | Jul 19 – Oct 4 | 90–120 |
| Borage | Mar 15 | Mar 22 | Apr 5 | Sep 9 | May 31 – Jul 19 | 50–60 |
| Caraway | Mar 15 | Mar 22 | Apr 5 | Sep 9 | — | 365–450 |
| Catnip | — | — | Apr 19 | — | Jun 21 – Aug 23 | 60–80 |
| Chamomile | Mar 15 | Mar 22 | Apr 5 | Sep 9 | Jun 7 – Aug 16 | 60–90 |
| Chervil | Mar 15 | Mar 22 | Apr 5 | Sep 9 | May 17 – Jul 19 | 40–60 |
| Chives | — | — | Apr 19 | — | Jun 21 – Aug 30 | 60–90 |
| Cilantro | Mar 15 | Mar 22 | Apr 5 | Sep 9 | May 17 – Jul 19 | 40–60 |
| Comfrey | — | — | Apr 19 | — | Jun 21 – Aug 30 | 60–90 |
| Cumin | Mar 15 | Mar 22 | Apr 5 | Sep 9 | Jul 19 – Sep 20 | 100–120 |
| Dill | Mar 15 | Mar 22 | Apr 5 | Sep 9 | May 17 – Jul 19 | 40–60 |
| Epazote | Mar 1 | Apr 19 | Apr 19 | — | Jun 7 – Aug 2 | 45–60 |
| Fennel (herb) | Mar 15 | Mar 22 | Apr 5 | Sep 9 | Jun 7 – Aug 16 | 60–90 |
| Feverfew | — | — | Apr 19 | — | Jul 19 – Oct 4 | 90–120 |
| Garlic Chives | — | — | Apr 19 | — | Jun 21 – Aug 30 | 60–90 |
| Horehound | — | — | Apr 19 | — | Jul 5 – Aug 30 | 75–90 |
| Hyssop | — | — | Apr 19 | — | Jun 28 – Aug 30 | 70–90 |
| Lemon Balm | — | — | Apr 19 | — | Jun 21 – Aug 9 | 60–70 |
| Lemon Thyme | — | — | Apr 19 | — | Jun 28 – Aug 30 | 70–90 |
| Lemon Verbena | Mar 1 | Apr 19 | Apr 19 | — | Jun 21 – Aug 30 | 60–90 |
| Lemongrass | Mar 1 | Apr 19 | Apr 19 | — | Jul 5 – Oct 4 | 75–120 |
| Marjoram | — | — | Apr 19 | — | Jun 21 – Aug 30 | 60–90 |
| Mint | — | — | Apr 19 | — | Jun 21 – Aug 30 | 60–90 |
| Oregano | — | — | Apr 19 | — | Jun 21 – Aug 30 | 60–90 |
| Parsley | Mar 15 | Mar 22 | Apr 5 | Sep 9 | Jun 7 – Aug 9 | 60–80 |
| Rosemary | — | — | Apr 19 | — | Jul 12 – Nov 29 | 80–180 |
| Rue | — | — | Apr 19 | — | Jun 28 – Aug 30 | 70–90 |
| Sage | — | — | Apr 19 | — | Jul 5 – Aug 30 | 75–90 |
| Savory | — | — | Apr 19 | — | Jun 14 – Aug 9 | 50–70 |
| Sorrel | Mar 15 | Mar 22 | Apr 5 | Sep 9 | May 17 – Jul 19 | 40–60 |
| Stevia | Mar 1 | Apr 19 | Apr 19 | — | Jun 21 – Aug 30 | 60–90 |
| Tarragon | — | — | Apr 19 | — | Jun 21 – Aug 30 | 60–90 |
| Thai Basil | Mar 1 | Apr 19 | Apr 19 | — | Jun 14 – Aug 16 | 50–75 |
| Thyme | — | — | Apr 19 | — | Jun 28 – Aug 30 | 70–90 |
| Valerian | — | — | Apr 19 | — | Aug 23 – Nov 29 | 120–180 |
🌸 Flowers to Grow in Seaside
49 flowers matched to Zone 9a with planting dates calibrated for Seaside.
Show all 49 flowers with dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Bloom | Days to Maturity |
|---|---|---|---|---|---|---|
| Ageratum | Mar 1 | Mar 29 | Mar 29 | — | May 24 – Nov 8 | 60–75 |
| Alliums | — | — | — | Oct 7 | Nov 4 – Nov 25 | 28–42 |
| Anemones | — | — | — | Sep 9 | Sep 16 – Oct 14 | 90–120 |
| Bachelor's Button | — | Feb 15 | Mar 15 | Aug 26 | May 10 – Aug 30 | 60–90 |
| Begonias | Feb 1 | — | Mar 22 | — | May 31 – Nov 29 | 70–90 |
| Black-eyed Susan | Feb 15 | Mar 29 | Mar 29 | — | Jun 7 – Oct 25 | 60–80 |
| Bleeding Hearts | Feb 15 | — | Mar 29 | — | May 17 – Jun 7 | 60–90 |
| Calendula | — | Feb 15 | Mar 15 | Aug 12 | Apr 26 – Aug 30 | 50–70 |
| California Poppy | — | — | — | Aug 12 | Oct 21 – Feb 24 | 60–90 |
| Celosia | Mar 15 | Mar 29 | Mar 29 | — | May 31 – Dec 6 | 60–90 |
| Columbine | Feb 15 | Mar 29 | Mar 29 | — | May 17 – Jun 7 | 70–100 |
| Coreopsis | Feb 15 | Mar 29 | Mar 29 | — | May 24 – Oct 25 | 60–80 |
| Cosmos | Mar 15 | Mar 15 | Mar 15 | — | May 24 – Nov 8 | 60–90 |
| Daffodils | — | — | — | Oct 7 | Sep 23 – Oct 14 | 20–40 |
| Dahlias | — | Apr 12 | Apr 12 | — | Jun 21 – Dec 20 | 70–120 |
| Daylily | Feb 15 | — | Mar 29 | — | Jun 7 – Nov 22 | 60–90 |
| Dianthus | Feb 15 | Feb 15 | Feb 15 | — | Apr 5 – Jun 7 | 60–80 |
| Echinacea (Purple Coneflower) | Feb 15 | Mar 29 | Mar 29 | — | Jun 7 – Oct 25 | 70–90 |
| Foxglove | Feb 15 | Mar 29 | Mar 29 | — | May 17 – Jun 7 | 80–120 |
| Freesia | — | — | — | Sep 23 | Oct 7 – Nov 4 | 84–112 |
| Gaillardia (Blanket Flower) | Mar 1 | Mar 29 | Mar 29 | — | Jun 7 – Dec 6 | 70–100 |
| Geraniums | Feb 1 | — | Mar 22 | — | May 31 – Nov 29 | 70–100 |
| Gladiolus | — | Apr 12 | Apr 12 | — | Jun 21 – Dec 20 | 70–100 |
| Hostas | Feb 15 | — | Mar 29 | — | Jun 7 – Sep 27 | 60–90 |
| Hyacinths | — | — | — | Oct 7 | Oct 7 – Oct 28 | 14–28 |
| Hydrangeas | Feb 15 | — | Mar 29 | — | Jun 7 – Sep 27 | 90–150 |
| Impatiens | Feb 15 | — | Mar 29 | — | Jun 7 – Nov 22 | 60–75 |
| Irises | — | Division | Mar 29 | — | May 17 – Jun 21 | 60–100 |
| Larkspur | — | — | — | Aug 26 | Nov 4 – Feb 24 | 60–90 |
| Lavender | Feb 15 | — | Mar 29 | — | Jun 7 – Sep 13 | 90–120 |
| Lilies | — | Division | Mar 29 | — | Jun 7 – Sep 13 | 70–120 |
| Lobelia | Feb 15 | — | Feb 15 | — | Apr 12 – May 10 | 70–80 |
| Marigolds | Mar 8 | Mar 29 | Mar 29 | — | May 24 – Oct 25 | 50–70 |
| Nasturtium | Mar 15 | Mar 22 | Mar 22 | — | May 17 – Nov 15 | 55–65 |
| Pansy | Feb 1 | — | Mar 15 | Aug 12 | May 3 – Aug 2 | 70–90 |
| Petunia | Feb 15 | — | Mar 29 | — | Jun 7 – Nov 8 | 70–90 |
| Phlox | Feb 15 | Mar 29 | Mar 29 | — | Jun 7 – Aug 2 | 80–110 |
| Portulaca | Mar 15 | Mar 29 | Mar 29 | — | May 17 – Nov 22 | 50–70 |
| Ranunculus | — | — | — | Sep 9 | Sep 23 – Oct 21 | 90–120 |
| Roses | Feb 15 | — | Mar 29 | — | Jun 7 – Nov 22 | 90–180 |
| Salvia | Feb 15 | — | Mar 22 | — | May 31 – Nov 15 | 70–90 |
| Sedum (Stonecrop) | Feb 15 | — | Mar 29 | — | Jul 19 – Sep 27 | 60–90 |
| Snapdragon | — | Feb 15 | Mar 15 | Aug 12 | May 17 – Sep 13 | 70–100 |
| Sunflower | Mar 22 | Mar 22 | Mar 22 | — | Jun 14 – Nov 15 | 70–100 |
| Sweet Alyssum | — | Feb 15 | Mar 15 | Aug 26 | Apr 19 – Aug 2 | 45–60 |
| Sweet Pea | — | — | — | Aug 26 | Nov 4 – Dec 30 | 65–85 |
| Vinca (Annual) | Feb 1 | — | Mar 22 | — | May 31 – Nov 29 | 70–90 |
| Yarrow | Feb 15 | Mar 29 | Mar 29 | — | May 24 – Oct 11 | 60–90 |
| Zinnia | Mar 15 | Mar 22 | Mar 22 | — | May 31 – Nov 15 | 60–70 |
Monthly Planting Guide for Seaside
ZIP Codes in Seaside
Click any ZIP to see its specific frost, soil, and climate measurements (some ZIPs differ noticeably from the town aggregate):
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Clatsop County.
Your Clatsop County Garden Planner — Free
A 22-page printable planner built for Clatsop 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