Yakima County, WA — Planting Guide
May in the garden — Yakima County, Washington
May is a pivotal month for Yakima County, Washington gardens. Focus on these tasks first and you'll set up the rest of the season for success.
-
Move basil, cucumber, and kale from tray to bed
Pick a cloudy afternoon or evening to plant. Less transplant shock, and your seedlings will barely blink.
-
Put basil, cucumber, and green beans seeds straight in the ground
Your soil is 54°F — warm enough for these to germinate without babying.
-
Bring in the radish, cress, and microgreens
Check every 1–2 days. Many of these get tough or go to seed if you wait too long.
Coming up in June — start thinking about
- Starting indoors: basil, cucumber, and kale
- First harvests: carrots, lettuce, and radish
Yakima County is in USDA Zone 7a. The average last spring frost is May 6 and the first fall frost is October 3, giving you a growing season of approximately 150 days.
At an elevation of 3,150 ft, Yakima County receives approximately 18 in of rainfall annually. Summer highs average 86°F with winter lows around 20°F. The predominant soil type is Silt Loam.
Based on 31 years of NOAA climate station data, the last frost date here varies by 35 days year to year — ranging from April 20 in warm years to May 26 in cold years. The growing season is trending longer by about 1.32 days per decade. Yakima County scores 54/100 (Moderate) on the Microclimate Index.
🌡️ Zone
7a (°F to °F min)
❄️ Last Frost
May 6
🍂 First Frost
October 3
📅 Growing Season
150 days
⛰️ Elevation
3,150 ft
🌧️ Annual Rainfall
18 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 | 2.6 in | 16 days | — | None |
| Feb | 1.9 in | 14 days | — | None |
| Mar | 1.6 in | 16 days | 2.7 in | High |
| Apr | 1.3 in | 12 days | 3 in | High |
| May | 1 in | 10 days | 3.3 in | Critical |
| Jun | 0.6 in | 6 days | 3.7 in | Critical |
| Jul | 0.3 in | 2 days | 4 in | Critical |
| Aug | 0.3 in | 3 days | 4 in | Critical |
| Sep | 0.6 in | 4 days | 3.7 in | Critical |
| Oct | 1.4 in | 9 days | 2.9 in | High |
| Nov | 3.2 in | 17 days | — | None |
| Dec | 3.1 in | 20 days | — | None |
Annual total: 17.9 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.
Yakima County Soil Profile
Soil Type
Silt Loam
Soil pH
5.5-6.3
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) | May 26 | Oct 20 | 147 days |
| Cautious | May 13 | Oct 6 | 146 days |
| Average year | May 6 | Oct 3 | 150 days |
| Optimistic | Apr 30 | Sep 27 | 150 days |
| Aggressive (risky) | Apr 20 | Sep 21 | 154 days |
Not very — frost dates can vary by ±35 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 1.3 days per decade). Spring is arriving earlier than it used to. Good news for gardeners.
Gardening Difficulty Score
Yakima County presents some gardening challenges. Choose adapted varieties and plan around frost dates.
Local Gardening Help in Yakima 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 Yakima County's climate and soil.
County Extension Office
Yakima 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 Yakima County
Finding local nurseries & garden centers in Yakima County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Yakima 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 Yakima County WA" or "garden center Yakima 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 Yakima County WA" or check your extension office and local parks department. Facebook groups like "Yakima 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
15.6 hours
Summer solstice daylight
Shortest Day
8.4 hours
Winter solstice daylight
Peak Sun Hours
10.7 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 | 2.9 hr | Short day |
| March | 11.6 hr | 4 hr | Short day |
| April | 13.3 hr | 5.5 hr | Neutral |
| May | 14.8 hr | 7.1 hr | Long day |
| June | 15.6 hr | 8.7 hr | Long day |
| July | 15.3 hr | 10.7 hr | Long day |
| August | 14 hr | 9.4 hr | Long day |
| September | 12.3 hr | 7 hr | Neutral |
| October | 10.6 hr | 4.1 hr | Short day |
| November | 9.1 hr | 2.2 hr | Short day |
| December | 8.4 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 Jun through Sep.
Best Month to Compost
Jul
Microbial activity peaks when soil is warm.
Active Composting
6 months
Solid season. Piles go dormant in winter.
View detailed monthly data
| Month | Soil 4" Deep | Soil 8" Deep | Compost Activity | Time to Finish |
|---|---|---|---|---|
| Jan | 23°F | 29°F | ❄️ Dormant | ~36 weeks |
| Feb | 23°F | 29°F | ❄️ Dormant | ~36 weeks |
| Mar | 30°F | 34°F | ❄️ Dormant | ~36 weeks |
| Apr | 43°F | 42°F | 🐢 Slow | ~24 weeks |
| May | 54°F | 53°F | ♻️ Active | ~14 weeks |
| Jun | 63°F | 60°F | ♻️ Active | ~14 weeks |
| Jul | 74°F | 67°F | 🔥 Peak | ~8 weeks |
| Aug | 74°F | 71°F | 🔥 Peak | ~8 weeks |
| Sep | 66°F | 65°F | 🔥 Peak | ~8 weeks |
| Oct | 54°F | 56°F | ♻️ Active | ~14 weeks |
| Nov | 43°F | 47°F | 🐢 Slow | ~24 weeks |
| Dec | 30°F | 38°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 Yakima 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 6 common pests in your area
| Pest | Risk Level | Peak Months |
|---|---|---|
| Aphids | Moderate | Apr, May, Jun, Jul, Aug, Sep |
| Japanese beetles | Moderate | Jun, Jul, Aug |
| Squash vine borers | Moderate | Jun, Jul |
| Tomato hornworms | Moderate | Jun, Jul, Aug |
| Cucumber beetles | Moderate | May, Jun, Jul |
| Stink bugs | Low | Jun, Jul, Aug, Sep |
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 Yakima 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 16 | Aug 1 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Sorghum-sudan grass | May 13 | Aug 8 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | Apr 6 | Aug 8 | ✓ 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 26 | Sep 19 | — | 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 1 | Apr 15 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Crimson clover | Aug 8 | Apr 22 | ✓ Yes | Fixes nitrogen, attracts pollinators in spring |
| Daikon radish | Aug 18 | Apr 22 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Jul 17 | Apr 22 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Aug 29 | Apr 15 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Jul 4 | Apr 22 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Jun 29 | Apr 15 | — | 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: 8 mph
Fall: 10 mph Winter: 13 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 (696 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
8,921 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 17.9 inches of rain per year
- A 1,000 sq ft roof can collect roughly 8,921 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 Yakima County
Soil Type
Silt Loam
Soil pH 5.5–6.3 · 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. (18 in. annual rainfall)
Season Tips
150-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 Yakima County
113 vegetables that grow well in Zone 7a with planting dates for Yakima County.
Show all 113 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Acorn Squash | Apr 8 | May 13 | May 20 | Aug 12 – Sep 16 | 80–100 |
| Amaranth | Mar 18 | May 13 | May 20 | Aug 19 – Oct 7 | 90–120 |
| Artichoke | — | — | May 20 | Sep 23 – Dec 2 | 120–180 |
| Arugula | Apr 1 | Apr 22 | May 6 | Jun 10 – Aug 12 | 30–50 |
| Asparagus | — | — | May 20 | — | 730–1095 |
| Beets | — | Apr 22 | — | Jun 17 – Jul 15 | 50–70 |
| Belgian Endive | Apr 1 | Apr 22 | May 6 | Aug 26 – Oct 21 | 110–150 |
| Bitter Melon | Mar 18 | May 13 | May 20 | Jul 22 – Sep 2 | 60–90 |
| Black Beans | — | May 13 | — | Aug 12 – Sep 30 | 90–120 |
| Bok Choy | Apr 1 | Apr 22 | May 6 | Jun 17 – Jul 22 | 40–60 |
| Broccoli | Apr 1 | Apr 22 | May 6 | Jul 8 – Aug 19 | 60–90 |
| Broccoli Rabe | Apr 1 | Apr 22 | May 6 | Jun 17 – Jul 22 | 40–60 |
| Brussels Sprouts | Apr 1 | Apr 22 | May 6 | Aug 5 – Sep 30 | 90–130 |
| Butternut Squash | Apr 8 | May 13 | May 20 | Aug 19 – Sep 23 | 85–110 |
| Cabbage | Apr 1 | Apr 22 | May 6 | Jul 8 – Sep 2 | 60–100 |
| Calabash | Mar 18 | May 13 | May 20 | Aug 12 – Oct 7 | 80–120 |
| Cardoon | — | — | May 20 | Sep 23 – Nov 4 | 120–150 |
| Carrots | — | Apr 22 | — | Jun 24 – Jul 29 | 60–80 |
| Cauliflower | Apr 1 | Apr 22 | May 6 | Jul 1 – Sep 2 | 55–100 |
| Celeriac | Apr 1 | Apr 22 | May 6 | Aug 19 – Sep 23 | 100–120 |
| Celery | Apr 1 | Apr 22 | May 6 | Jul 29 – Sep 23 | 80–120 |
| Celtuce | Apr 1 | Apr 22 | May 6 | Jul 8 – Aug 19 | 60–90 |
| Chard | Apr 1 | Apr 22 | May 6 | Jul 1 – Aug 19 | 50–60 |
| Chayote | Mar 18 | May 13 | May 20 | Sep 23 – Dec 2 | 120–180 |
| Chickpeas | Apr 1 | Apr 22 | May 6 | Jul 29 – Sep 9 | 80–110 |
| Chicory | Apr 1 | Apr 22 | May 6 | Jul 8 – Aug 19 | 60–85 |
| Chinese Cabbage | Apr 1 | Apr 22 | May 6 | Jul 1 – Jul 29 | 50–70 |
| Christmas Lima Beans | Mar 18 | May 13 | May 20 | Aug 12 – Sep 16 | 80–100 |
| Collard Greens | Apr 1 | Apr 22 | May 6 | Jul 1 – Sep 2 | 55–75 |
| Corn | — | May 13 | — | Jul 15 – Sep 9 | 60–100 |
| Cowpeas | — | May 13 | — | Jul 15 – Aug 26 | 60–90 |
| Cress | Apr 1 | Apr 22 | May 6 | May 20 – Jun 10 | 14–21 |
| Crookneck Squash | Apr 8 | May 13 | May 20 | Jul 8 – Aug 5 | 45–60 |
| Crosne | — | Apr 22 | — | Sep 23 – Nov 25 | 150–200 |
| Cucumber | Apr 8 | May 13 | May 20 | Jul 15 – Sep 9 | 50–70 |
| Daikon | — | Apr 22 | — | Jun 17 – Jul 15 | 50–70 |
| Delicata Squash | Apr 8 | May 13 | May 20 | Aug 12 – Sep 16 | 80–100 |
| Edamame | — | May 13 | — | Jul 29 – Sep 9 | 75–100 |
| Eggplant | Mar 4 | May 13 | May 20 | Jul 29 – Sep 30 | 65–85 |
| Endive | Apr 1 | Apr 22 | May 6 | Jun 24 – Jul 29 | 45–65 |
| Escarole | Apr 1 | Apr 22 | May 6 | Jul 1 – Jul 29 | 50–70 |
| Fava Beans | Apr 1 | Apr 22 | May 6 | Jul 22 – Sep 2 | 75–100 |
| Fennel | Mar 18 | May 13 | May 20 | Jul 22 – Sep 2 | 60–90 |
| Garlic | — | — | — | — | 90–240 |
| Green Beans | — | May 13 | — | Jul 8 – Sep 2 | 50–65 |
| Horseradish | — | — | May 20 | Sep 23 – Dec 2 | 120–180 |
| Hot Peppers | Mar 4 | May 13 | May 20 | Jul 29 – Nov 4 | 70–120 |
| Hubbard Squash | Apr 8 | May 13 | May 20 | Sep 2 – Oct 7 | 100–120 |
| Jicama | Mar 18 | May 13 | May 20 | Sep 23 – Dec 2 | 120–180 |
| Kabocha | Apr 8 | May 13 | May 20 | Aug 19 – Sep 16 | 85–100 |
| Kai Lan | Apr 1 | Apr 22 | May 6 | Jun 24 – Jul 22 | 45–60 |
| Kale | Apr 1 | Apr 22 | May 6 | Jul 1 – Aug 26 | 50–70 |
| Kidney Beans | — | May 13 | — | Aug 12 – Sep 16 | 85–110 |
| Kohlrabi | Apr 1 | Apr 22 | May 6 | Jun 24 – Jul 29 | 45–65 |
| Komatsuna | Apr 1 | Apr 22 | May 6 | Jun 10 – Jul 15 | 35–50 |
| Leeks | Apr 1 | Apr 22 | May 6 | Aug 5 – Oct 21 | 90–150 |
| Lentils | Apr 1 | Apr 22 | May 6 | Jul 29 – Sep 9 | 80–110 |
| Lettuce | Apr 1 | Apr 22 | May 6 | Jun 10 – Aug 19 | 30–60 |
| Lima Beans | — | May 13 | — | Jul 15 – Aug 26 | 60–90 |
| Loofah | Mar 18 | May 13 | May 20 | Sep 2 – Nov 4 | 100–150 |
| Luffa | Mar 18 | May 13 | May 20 | Aug 19 – Nov 4 | 90–150 |
| Mache | Apr 1 | Apr 22 | May 6 | Jun 17 – Jul 22 | 40–60 |
| Malabar Spinach | Mar 18 | May 13 | May 20 | Jul 15 – Aug 12 | 55–70 |
| Melon | Apr 8 | May 13 | May 20 | Jul 29 – Sep 16 | 70–100 |
| Microgreens | Apr 1 | Apr 22 | May 6 | May 13 – Jun 10 | 7–21 |
| Mitsuba | Apr 1 | Apr 22 | Apr 29 | Jun 24 – Aug 19 | 50–70 |
| Mizuna | Apr 1 | Apr 22 | May 6 | Jun 10 – Jul 8 | 30–45 |
| Mustard Greens | Apr 1 | Apr 22 | May 6 | Jun 10 – Aug 12 | 30–50 |
| Napa Cabbage | Apr 1 | Apr 22 | May 6 | Jul 1 – Aug 5 | 55–75 |
| New Zealand Spinach | Mar 18 | May 13 | May 20 | Jul 15 – Aug 12 | 55–70 |
| Okra | Mar 18 | May 13 | May 20 | Jul 15 – Sep 9 | 50–65 |
| Onion | Apr 1 | Apr 22 | May 6 | Aug 5 – Sep 23 | 90–120 |
| Pac Choi | Apr 1 | Apr 22 | May 6 | Jun 17 – Jul 15 | 40–55 |
| Parsnip | — | Apr 22 | — | Aug 5 – Sep 16 | 100–130 |
| Patty Pan Squash | Apr 8 | May 13 | May 20 | Jul 8 – Aug 5 | 45–60 |
| Peas | Apr 1 | Apr 22 | May 6 | Jul 1 – Aug 26 | 55–70 |
| Peppers | Mar 4 | May 13 | May 20 | Jul 22 – Sep 30 | 60–90 |
| Pole Beans | Mar 18 | May 13 | May 20 | Jul 15 – Sep 9 | 55–70 |
| Potatoes | Mar 18 | May 13 | May 20 | Jul 29 – Oct 7 | 70–120 |
| Pumpkin | Apr 8 | May 13 | May 20 | Aug 19 – Oct 7 | 85–120 |
| Purslane | Apr 1 | Apr 22 | May 6 | Jun 17 – Jul 22 | 40–60 |
| Radicchio | Apr 1 | Apr 22 | May 6 | Jul 8 – Aug 12 | 60–80 |
| Radish | — | Apr 22 | — | May 20 – Jun 10 | 22–35 |
| Rhubarb | — | — | May 27 | — | 365–730 |
| Romanesco | Apr 1 | Apr 22 | May 6 | Jul 22 – Sep 2 | 75–100 |
| Rutabaga | — | Apr 22 | — | Jul 15 – Aug 19 | 80–100 |
| Salsify | — | Apr 22 | — | Aug 5 – Sep 16 | 100–130 |
| Savoy Cabbage | Apr 1 | Apr 22 | May 6 | Jul 15 – Sep 9 | 70–110 |
| Scallions | Apr 1 | Apr 22 | May 6 | Jul 1 – Jul 29 | 50–70 |
| Scarlet Runner Beans | Mar 18 | May 13 | May 20 | Jul 22 – Aug 26 | 60–80 |
| Shallot | Apr 1 | Apr 22 | May 6 | Aug 5 – Sep 23 | 90–120 |
| Shiso | Mar 18 | May 13 | May 20 | Jul 15 – Sep 9 | 50–70 |
| Snap Peas | Mar 18 | May 13 | May 20 | Jul 15 – Sep 9 | 55–70 |
| Snow Peas | Apr 1 | Apr 22 | May 6 | Jul 1 – Aug 26 | 50–65 |
| Soybeans | — | May 13 | — | Aug 5 – Sep 30 | 80–120 |
| Spaghetti Squash | Apr 8 | May 13 | May 20 | Aug 19 – Sep 16 | 85–100 |
| Spinach | Apr 1 | Apr 22 | May 6 | Jun 10 – Aug 12 | 35–50 |
| Squash (Summer) | Apr 8 | May 13 | May 20 | Jul 8 – Sep 9 | 45–65 |
| Squash (Winter) | Apr 8 | May 13 | May 20 | Aug 12 – Oct 7 | 80–120 |
| Sunchoke | — | — | May 20 | Sep 9 – Nov 4 | 110–150 |
| Sunflower | Mar 18 | May 13 | May 20 | Jul 29 – Sep 16 | 70–100 |
| Sweet Corn | — | May 13 | — | Jul 15 – Aug 26 | 60–90 |
| Sweet Potatoes | Mar 18 | May 13 | May 20 | Aug 19 – Oct 7 | 90–120 |
| Tatsoi | Apr 1 | Apr 22 | May 6 | Jun 10 – Jul 15 | 35–50 |
| Tomatillo | Mar 18 | May 13 | May 20 | Jul 22 – Sep 30 | 60–85 |
| Tomatoes | Mar 18 | May 13 | May 20 | Jul 22 – Sep 30 | 60–85 |
| Turnip | — | Apr 22 | — | Jun 3 – Jul 8 | 40–60 |
| Watercress | Apr 1 | Apr 22 | May 6 | Jun 17 – Jul 22 | 40–60 |
| Watermelon | Apr 8 | May 13 | May 20 | Jul 29 – Sep 16 | 70–100 |
| Wax Beans | — | May 13 | — | Jul 8 – Sep 2 | 50–65 |
| Winter Melon | Mar 18 | May 13 | May 20 | Aug 19 – Oct 7 | 90–120 |
| Yard Long Beans | Mar 18 | May 13 | May 20 | Jul 15 – Aug 26 | 55–80 |
| Zucchini | Apr 8 | May 13 | May 20 | Jul 8 – Sep 2 | 45–60 |
🍓 Fruits to Grow in Yakima County
31 fruits that grow well in Zone 7a with planting dates for Yakima County.
Show all 31 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Alpine Strawberries | — | — | May 27 | Aug 26 – Dec 9 | 90–180 |
| Aronia | — | — | May 27 | — | 730–1095 |
| Blackberries | — | — | May 27 | — | 365–730 |
| Blueberries | — | — | May 27 | — | 730–1095 |
| Boysenberries | — | — | May 27 | — | 365–730 |
| Cantaloupe | — | — | May 27 | Aug 5 – Sep 9 | 70–90 |
| Che Fruit | — | — | May 27 | — | 1095–1825 |
| Cranberries | — | — | May 27 | — | 730–1095 |
| Currants | — | — | May 27 | — | 730–1095 |
| Elderberries | — | — | May 27 | — | 730–1095 |
| Figs | — | — | May 27 | — | 730–1825 |
| Goji Berries | — | — | May 27 | — | 730–1095 |
| Gooseberries | — | — | May 27 | — | 730–1095 |
| Grapes | — | — | May 27 | — | 730–1095 |
| Ground Cherry | — | — | May 27 | Aug 5 – Sep 30 | 65–80 |
| Hardy Kiwi | — | — | May 27 | — | 1095–1825 |
| Haskaps | — | — | May 27 | — | 730–1095 |
| Honeydew | — | — | May 27 | Aug 19 – Sep 30 | 80–110 |
| Jostaberry | — | — | May 27 | — | 730–1095 |
| Kiwi | — | — | May 27 | — | 1095–1825 |
| Lingonberries | — | — | May 27 | — | 730–1095 |
| Loquat | — | — | May 27 | — | 730–1825 |
| Medlar | — | — | May 27 | — | 1095–1825 |
| Mulberries | — | — | May 27 | — | 730–1825 |
| Pawpaw | — | — | May 27 | — | 1095–2555 |
| Persimmon | — | — | May 27 | — | 1095–2555 |
| Pomegranate | — | — | May 27 | — | 730–1095 |
| Quince | — | — | May 27 | — | 1095–1825 |
| Raspberries | — | — | May 27 | — | 365–730 |
| Serviceberries | — | — | May 27 | — | 730–1095 |
| Strawberries | — | — | May 27 | Aug 26 – Jan 6 | 90–365 |
🌿 Herbs to Grow in Yakima County
39 herbs that grow well in Zone 7a with planting dates for Yakima County.
Show all 39 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Angelica | Apr 1 | Apr 22 | Apr 29 | — | 365–730 |
| Anise | Apr 1 | Apr 22 | Apr 29 | Jul 29 – Oct 14 | 90–120 |
| Basil | Mar 18 | May 13 | May 20 | Jul 15 – Sep 16 | 50–75 |
| Bee Balm | — | — | May 13 | Aug 12 – Oct 28 | 90–120 |
| Borage | Apr 1 | Apr 22 | Apr 29 | Jun 24 – Aug 12 | 50–60 |
| Caraway | Apr 1 | Apr 22 | Apr 29 | — | 365–450 |
| Catnip | — | — | May 13 | Jul 15 – Sep 16 | 60–80 |
| Chamomile | Apr 1 | Apr 22 | Apr 29 | Jul 1 – Sep 9 | 60–90 |
| Chervil | Apr 1 | Apr 22 | Apr 29 | Jun 10 – Aug 12 | 40–60 |
| Chives | — | — | May 13 | Jul 15 – Sep 23 | 60–90 |
| Cilantro | Apr 1 | Apr 22 | Apr 29 | Jun 10 – Aug 12 | 40–60 |
| Comfrey | — | — | May 13 | Jul 15 – Sep 23 | 60–90 |
| Cumin | Apr 1 | Apr 22 | Apr 29 | Aug 12 – Oct 14 | 100–120 |
| Dill | Apr 1 | Apr 22 | Apr 29 | Jun 10 – Aug 12 | 40–60 |
| Echinacea | — | — | May 13 | Sep 16 – Dec 23 | 120–180 |
| Epazote | Mar 18 | May 13 | May 20 | Jul 8 – Sep 2 | 45–60 |
| Fennel (herb) | Apr 1 | Apr 22 | Apr 29 | Jul 1 – Sep 9 | 60–90 |
| Feverfew | — | — | May 13 | Aug 12 – Oct 28 | 90–120 |
| Garlic Chives | — | — | May 13 | Jul 15 – Sep 23 | 60–90 |
| Horehound | — | — | May 13 | Jul 29 – Sep 23 | 75–90 |
| Hyssop | — | — | May 13 | Jul 22 – Sep 23 | 70–90 |
| Lavender | — | — | May 13 | Aug 12 – Dec 23 | 90–200 |
| Lemon Balm | — | — | May 13 | Jul 15 – Sep 2 | 60–70 |
| Lemon Thyme | — | — | May 13 | Jul 22 – Sep 23 | 70–90 |
| Lovage | — | — | May 13 | Jul 22 – Sep 23 | 70–90 |
| Marjoram | — | — | May 13 | Jul 15 – Sep 23 | 60–90 |
| Mint | — | — | May 13 | Jul 15 – Sep 23 | 60–90 |
| Oregano | — | — | May 13 | Jul 15 – Sep 23 | 60–90 |
| Parsley | Apr 1 | Apr 22 | Apr 29 | Jul 1 – Sep 2 | 60–80 |
| Rosemary | — | — | May 13 | Aug 5 – Dec 23 | 80–180 |
| Rue | — | — | May 13 | Jul 22 – Sep 23 | 70–90 |
| Sage | — | — | May 13 | Jul 29 – Sep 23 | 75–90 |
| Savory | — | — | May 13 | Jul 8 – Sep 2 | 50–70 |
| Sorrel | Apr 1 | Apr 22 | Apr 29 | Jun 10 – Aug 12 | 40–60 |
| Tarragon | — | — | May 13 | Jul 15 – Sep 23 | 60–90 |
| Thai Basil | Mar 18 | May 13 | May 20 | Jul 15 – Sep 16 | 50–75 |
| Thyme | — | — | May 13 | Jul 22 – Sep 23 | 70–90 |
| Valerian | — | — | May 13 | Sep 16 – Dec 23 | 120–180 |
| Yarrow | — | — | May 13 | Aug 12 – Oct 28 | 90–120 |
Monthly Planting Guide for Yakima County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Yakima County.
Frequently Asked Questions
What planting zone is Yakima County, WA?
Yakima County is in USDA Hardiness Zone 7a. 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 Yakima County, WA?
Based on 31 years of NOAA weather station data, the median last spring frost in Yakima County falls around May 6. In 8 out of 10 years, last frost lands between April 20 and May 26 — a 35-day window of variability. Use May 26 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in Yakima County, WA?
The median first fall frost in Yakima County arrives around October 3. In cold years it can arrive as early as September 21; in mild years as late as October 20. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Yakima County?
Yakima County has a frost-free growing season of approximately 150 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 1.32 days per decade.
What is the soil like in Yakima County for gardening?
Yakima County has predominantly Silt Loam soil with a pH range of 5.5–6.3 and Well Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.
What is grown commercially in Yakima County?
Yakima County has commercial agriculture that includes Wheat, Potatoes, Apples, Cattle, Berries. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is Yakima County a good location for home gardening?
Yakima County scores 54/100 (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 Yakima County Garden Planner — Free
A 24-page printable planner built for Yakima County (Zone 7a). 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