Tuolumne County, CA — Planting Guide
Tuolumne County, California gardeners: here's your May plan
May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Tuolumne County, California.
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Harden off and plant basil, cucumber, and peppers
Your last frost (April 25) has passed. These warm-season crops can handle outdoor soil now.
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Sow basil, green beans, and thai basil where they'll grow
Sow every 2 weeks for a continuous harvest. A single big planting means a single big glut.
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Indoor seed-starting week for cucumber, kale, and lettuce
Starting these indoors now means sturdy transplants ready the moment your soil warms up.
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Harvest lettuce, radish, and arugula as they ripen
Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.
Looking ahead to June
- Starting indoors: basil, peppers, and pole beans
- First harvests: basil, carrots, and cucumber
Tuolumne County is in USDA Zone 9b. The average last spring frost is April 25 and the first fall frost is October 27, giving you a growing season of approximately 185 days.
At an elevation of 2,990 ft, Tuolumne County receives approximately 37.7 in of rainfall annually. Summer highs average 88°F with winter lows around 33°F. The predominant soil type is Loam.
Based on 30 years of NOAA climate station data, the last frost date here varies by 83 days year to year — ranging from March 28 in warm years to June 20 in cold years. The growing season is trending longer by about 9.29 days per decade. Tuolumne County scores 46/100 (Moderate) on the Microclimate Index.
🌡️ Zone
9b (°F to °F min)
❄️ Last Frost
April 25
🍂 First Frost
October 27
📅 Growing Season
185 days
⛰️ Elevation
2,990 ft
🌧️ Annual Rainfall
37.7 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 | 7.8 in | 10 days | — | None |
| Feb | 8.2 in | 9 days | — | None |
| Mar | 6.7 in | 8 days | — | Low |
| Apr | 2.8 in | 4 days | 1.5 in | Moderate |
| May | 1.1 in | 1 days | 3.2 in | Critical |
| Jun | 0.2 in | 0 days | 4.1 in | Critical |
| Jul | 0 in | 0 days | 4.3 in | Critical |
| Aug | 0 in | 0 days | 4.3 in | Critical |
| Sep | 0.4 in | 1 days | 3.9 in | Critical |
| Oct | 1.5 in | 3 days | 2.8 in | High |
| Nov | 3 in | 6 days | — | None |
| Dec | 6.1 in | 9 days | — | None |
Annual total: 37.8 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.
Tuolumne County Soil Profile
Soil Type
Loam
Soil pH
6.6-7.5
Drainage
Well Drained
Frost Risk Probability
Based on 30 years of NOAA weather station data from 3 stations
Beginners: Plant frost-sensitive crops (tomatoes, peppers, squash) after the "Safe" date on the left. Harvest or cover them before the "Protect by" date on the right. Hardy crops (lettuce, peas, kale) can go in the yellow transition zones.
How to read this table: "Conservative" means you're safe from frost 9 out of 10 years — best for beginners and frost-sensitive crops. "Average year" is the typical date. "Aggressive" means only 1 in 10 years is that warm — experienced gardeners with frost protection can try these dates.
| Planting Strategy | Last Spring Frost | First Fall Frost | Frost-Free Days |
|---|---|---|---|
| Conservative (safest) | Jun 20 | Nov 17 | 150 days |
| Cautious | May 29 | Nov 4 | 159 days |
| Average year | Apr 25 | Oct 27 | 185 days |
| Optimistic | Apr 14 | Sep 17 | 156 days |
| Aggressive (risky) | Mar 28 | Aug 15 | 140 days |
Not very — frost dates can vary by ±83 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 9.3 days per decade). Spring is arriving earlier than it used to. Good news for gardeners.
Gardening Difficulty Score
Tuolumne County presents some gardening challenges. Choose adapted varieties and plan around frost dates.
Local Gardening Help in Tuolumne 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 Tuolumne County's climate and soil.
County Extension Office
Tuolumne County University of California Cooperative Extension Extension Office
Phone: 530-750-1200
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 Tuolumne County
Finding local nurseries & garden centers in Tuolumne County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Tuolumne 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 Tuolumne County CA" or "garden center Tuolumne 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 Tuolumne County CA" or check your extension office and local parks department. Facebook groups like "Tuolumne County Gardeners" or "California 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
14.6 hours
Summer solstice daylight
Shortest Day
9.4 hours
Winter solstice daylight
Peak Sun Hours
13.2 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 | 9.6 hr | 5.7 hr | Short day |
| February | 10.6 hr | 6.4 hr | Short day |
| March | 11.7 hr | 7.7 hr | Short day |
| April | 13 hr | 9.3 hr | Neutral |
| May | 14.1 hr | 11.8 hr | Long day |
| June | 14.6 hr | 13.2 hr | Long day |
| July | 14.4 hr | 13 hr | Long day |
| August | 13.5 hr | 11.7 hr | Neutral |
| September | 12.2 hr | 10.7 hr | Neutral |
| October | 11 hr | 8.1 hr | Short day |
| November | 9.9 hr | 6.1 hr | Short day |
| December | 9.4 hr | 5.1 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 Oct.
Best Month to Compost
Jun
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 | 32°F | 38°F | ❄️ Dormant | ~36 weeks |
| Feb | 32°F | 37°F | ❄️ Dormant | ~36 weeks |
| Mar | 41°F | 42°F | 🐢 Slow | ~24 weeks |
| Apr | 49°F | 49°F | 🐢 Slow | ~24 weeks |
| May | 62°F | 58°F | ♻️ Active | ~14 weeks |
| Jun | 71°F | 66°F | 🔥 Peak | ~8 weeks |
| Jul | 80°F | 74°F | 🔥 Peak | ~8 weeks |
| Aug | 79°F | 77°F | 🔥 Peak | ~8 weeks |
| Sep | 75°F | 73°F | 🔥 Peak | ~8 weeks |
| Oct | 61°F | 65°F | ♻️ Active | ~14 weeks |
| Nov | 47°F | 54°F | 🐢 Slow | ~24 weeks |
| Dec | 37°F | 45°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 Tuolumne 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 |
| Japanese beetles | Moderate | Jun, Jul, Aug |
| Squash vine borers | High | May, Jun, Jul |
| Stink bugs | High | May, Jun, Jul, Aug, Sep |
| Whiteflies | Low | Jun, Jul, Aug, Sep |
| Spider mites | Moderate | Jul, Aug |
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 Tuolumne 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 29 | Sep 1 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Cowpeas (southern peas) | Apr 30 | Aug 25 | ✓ Yes | Excellent nitrogen fixer for warm climates, edible |
| Sorghum-sudan grass | Apr 29 | Aug 18 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | Mar 30 | Sep 1 | ✓ 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 7 | Sep 29 | — | 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 26 | Apr 4 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Crimson clover | Sep 3 | Apr 4 | ✓ Yes | Fixes nitrogen, attracts pollinators in spring |
| Daikon radish | Sep 1 | Apr 11 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Aug 18 | Apr 4 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Sep 27 | Apr 4 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Jul 25 | Apr 4 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Aug 7 | Apr 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: 10 mph
Fall: 9 mph Winter: 8 mph
Prevailing wind: W. Moderate wind — consider a temporary windbreak for young seedlings.
Windbreak Benefit
5.5/10
Moderately beneficial — a simple fence or trellis can protect delicate crops from wind stress.
Frost Pocket Risk
Moderate
Some terrain variation (846 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
18,839 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 2,500 gal tank.
Legal Status
Unrestricted
Rainwater harvesting is fully legal in your state with no restrictions.
Best Collection Months
Jan, Feb, Mar, 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 37.8 inches of rain per year
- A 1,000 sq ft roof can collect roughly 18,839 gallons annually
- Rainwater harvesting is fully legal in your state
- Stock up on stored water before your dry season (Jun, Jul, Aug)
- Use a first-flush diverter to keep roof debris out of your collection
Soil & Growing Conditions in Tuolumne County
Soil Type
Loam
Soil pH 6.6–7.5 · Well Drained drainage
Native soil is well-suited to most vegetables and herbs with regular compost additions.
Watering Needs
Drought stress: 7.5/10
High drought stress. Consistent irrigation is essential — consider drip systems, heavy mulch, and drought-tolerant varieties.
Season Tips
185-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 Tuolumne County
115 vegetables that grow well in Zone 9b with planting dates for Tuolumne County.
Show all 115 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Acorn Squash | Mar 28 | Apr 25 | May 2 | Jul 25 – Aug 29 | 80–100 |
| Amaranth | Mar 14 | Apr 25 | May 2 | Aug 1 – Sep 19 | 90–120 |
| Artichoke | — | — | May 9 | Sep 12 – Nov 21 | 120–180 |
| Arugula | Mar 28 | Apr 4 | Apr 25 | May 30 – Aug 1 | 30–50 |
| Asparagus | — | — | May 9 | — | 730–1095 |
| Beets | — | Apr 4 | — | May 30 – Jun 27 | 50–70 |
| Belgian Endive | Mar 28 | Apr 4 | Apr 25 | Aug 15 – Oct 10 | 110–150 |
| Bitter Melon | Mar 14 | Apr 25 | May 2 | Jul 4 – Aug 15 | 60–90 |
| Black Beans | — | May 2 | — | Aug 1 – Sep 19 | 90–120 |
| Bok Choy | Mar 28 | Apr 4 | Apr 25 | Jun 6 – Jul 11 | 40–60 |
| Broccoli | Mar 28 | Apr 4 | Apr 25 | Jun 27 – Aug 8 | 60–90 |
| Broccoli Rabe | Mar 28 | Apr 4 | Apr 25 | Jun 6 – Jul 11 | 40–60 |
| Brussels Sprouts | Mar 28 | Apr 4 | Apr 25 | Jul 25 – Sep 19 | 90–130 |
| Butternut Squash | Mar 28 | Apr 25 | May 2 | Aug 1 – Sep 5 | 85–110 |
| Cabbage | Mar 28 | Apr 4 | Apr 25 | Jun 27 – Aug 22 | 60–100 |
| Calabash | Mar 14 | Apr 25 | May 2 | Jul 25 – Sep 19 | 80–120 |
| Cardoon | — | — | May 9 | Sep 12 – Oct 24 | 120–150 |
| Carrots | — | Apr 4 | — | Jun 6 – Jul 11 | 60–80 |
| Cauliflower | Mar 28 | Apr 4 | Apr 25 | Jun 20 – Aug 22 | 55–100 |
| Celeriac | Mar 28 | Apr 4 | Apr 25 | Aug 8 – Sep 12 | 100–120 |
| Celery | Mar 28 | Apr 4 | Apr 25 | Jul 18 – Sep 12 | 80–120 |
| Celtuce | Mar 28 | Apr 4 | Apr 25 | Jun 27 – Aug 8 | 60–90 |
| Chard | Mar 28 | Apr 4 | Apr 25 | Jun 20 – Aug 8 | 50–60 |
| Chayote | Mar 14 | Apr 25 | May 2 | Sep 5 – Nov 14 | 120–180 |
| Chickpeas | Mar 28 | Apr 4 | Apr 25 | Jul 18 – Aug 29 | 80–110 |
| Chicory | Mar 28 | Apr 4 | Apr 25 | Jun 27 – Aug 8 | 60–85 |
| Chinese Cabbage | Mar 28 | Apr 4 | Apr 25 | Jun 20 – Jul 18 | 50–70 |
| Christmas Lima Beans | Mar 14 | Apr 25 | May 2 | Jul 25 – Aug 29 | 80–100 |
| Collard Greens | Mar 28 | Apr 4 | Apr 25 | Jun 20 – Aug 22 | 55–75 |
| Corn | — | May 2 | — | Jul 4 – Aug 29 | 60–100 |
| Cowpeas | — | May 2 | — | Jul 4 – Aug 15 | 60–90 |
| Cress | Mar 28 | Apr 4 | Apr 25 | May 9 – May 30 | 14–21 |
| Crookneck Squash | Mar 28 | Apr 25 | May 2 | Jun 20 – Jul 18 | 45–60 |
| Crosne | — | Apr 4 | — | Sep 5 – Nov 7 | 150–200 |
| Cucumber | Mar 28 | Apr 25 | May 2 | Jun 27 – Aug 22 | 50–70 |
| Daikon | — | Apr 4 | — | May 30 – Jun 27 | 50–70 |
| Delicata Squash | Mar 28 | Apr 25 | May 2 | Jul 25 – Aug 29 | 80–100 |
| Edamame | — | May 2 | — | Jul 18 – Aug 29 | 75–100 |
| Eggplant | Mar 14 | Apr 25 | May 2 | Jul 11 – Sep 12 | 65–85 |
| Endive | Mar 28 | Apr 4 | Apr 25 | Jun 13 – Jul 18 | 45–65 |
| Escarole | Mar 28 | Apr 4 | Apr 25 | Jun 20 – Jul 18 | 50–70 |
| Fava Beans | Mar 28 | Apr 4 | Apr 25 | Jul 11 – Aug 22 | 75–100 |
| Fennel | Mar 14 | Apr 25 | May 2 | Jul 4 – Aug 15 | 60–90 |
| Garlic | — | — | — | — | 90–240 |
| Ginger | Mar 14 | Apr 25 | May 2 | Jan 2 – Feb 27 | 240–300 |
| Green Beans | — | May 2 | — | Jun 27 – Aug 22 | 50–65 |
| Horseradish | — | — | May 9 | Sep 12 – Nov 21 | 120–180 |
| Hot Peppers | Mar 14 | Apr 25 | May 2 | Jul 11 – Oct 17 | 70–120 |
| Hubbard Squash | Mar 28 | Apr 25 | May 2 | Aug 15 – Sep 19 | 100–120 |
| Jicama | Mar 14 | Apr 25 | May 2 | Sep 5 – Nov 14 | 120–180 |
| Kabocha | Mar 28 | Apr 25 | May 2 | Aug 1 – Aug 29 | 85–100 |
| Kai Lan | Mar 28 | Apr 4 | Apr 25 | Jun 13 – Jul 11 | 45–60 |
| Kale | Mar 28 | Apr 4 | Apr 25 | Jun 20 – Aug 15 | 50–70 |
| Kidney Beans | — | May 2 | — | Aug 1 – Sep 5 | 85–110 |
| Kohlrabi | Mar 28 | Apr 4 | Apr 25 | Jun 13 – Jul 18 | 45–65 |
| Komatsuna | Mar 28 | Apr 4 | Apr 25 | May 30 – Jul 4 | 35–50 |
| Leeks | Mar 28 | Apr 4 | Apr 25 | Jul 25 – Oct 10 | 90–150 |
| Lentils | Mar 28 | Apr 4 | Apr 25 | Jul 18 – Aug 29 | 80–110 |
| Lettuce | Mar 28 | Apr 4 | Apr 25 | May 30 – Aug 8 | 30–60 |
| Lima Beans | — | May 2 | — | Jul 4 – Aug 15 | 60–90 |
| Loofah | Mar 14 | Apr 25 | May 2 | Aug 15 – Oct 17 | 100–150 |
| Luffa | Mar 14 | Apr 25 | May 2 | Aug 1 – Oct 17 | 90–150 |
| Mache | Mar 28 | Apr 4 | Apr 25 | Jun 6 – Jul 11 | 40–60 |
| Malabar Spinach | Mar 14 | Apr 25 | May 2 | Jun 27 – Jul 25 | 55–70 |
| Melon | Mar 28 | Apr 25 | May 2 | Jul 11 – Aug 29 | 70–100 |
| Microgreens | Mar 28 | Apr 4 | Apr 25 | May 2 – May 30 | 7–21 |
| Mitsuba | Mar 28 | Apr 4 | Apr 18 | Jun 13 – Aug 8 | 50–70 |
| Mizuna | Mar 28 | Apr 4 | Apr 25 | May 30 – Jun 27 | 30–45 |
| Mustard Greens | Mar 28 | Apr 4 | Apr 25 | May 30 – Aug 1 | 30–50 |
| Napa Cabbage | Mar 28 | Apr 4 | Apr 25 | Jun 20 – Jul 25 | 55–75 |
| New Zealand Spinach | Mar 14 | Apr 25 | May 2 | Jun 27 – Jul 25 | 55–70 |
| Okra | Mar 14 | Apr 25 | May 2 | Jun 27 – Aug 22 | 50–65 |
| Onion | Mar 28 | Apr 4 | Apr 25 | Jul 25 – Sep 12 | 90–120 |
| Pac Choi | Mar 28 | Apr 4 | Apr 25 | Jun 6 – Jul 4 | 40–55 |
| Parsnip | — | Apr 4 | — | Jul 18 – Aug 29 | 100–130 |
| Patty Pan Squash | Mar 28 | Apr 25 | May 2 | Jun 20 – Jul 18 | 45–60 |
| Peas | Mar 28 | Apr 4 | Apr 25 | Jun 20 – Aug 15 | 55–70 |
| Peppers | Mar 14 | Apr 25 | May 2 | Jul 4 – Sep 12 | 60–90 |
| Pole Beans | Mar 14 | Apr 25 | May 2 | Jun 27 – Aug 22 | 55–70 |
| Potatoes | Mar 14 | Apr 25 | May 2 | Jul 11 – Sep 19 | 70–120 |
| Pumpkin | Mar 28 | Apr 25 | May 2 | Aug 1 – Sep 19 | 85–120 |
| Purslane | Mar 28 | Apr 4 | Apr 25 | Jun 6 – Jul 11 | 40–60 |
| Radicchio | Mar 28 | Apr 4 | Apr 25 | Jun 27 – Aug 1 | 60–80 |
| Radish | — | Apr 4 | — | May 2 – May 23 | 22–35 |
| Romanesco | Mar 28 | Apr 4 | Apr 25 | Jul 11 – Aug 22 | 75–100 |
| Rutabaga | — | Apr 4 | — | Jun 27 – Aug 1 | 80–100 |
| Salsify | — | Apr 4 | — | Jul 18 – Aug 29 | 100–130 |
| Savoy Cabbage | Mar 28 | Apr 4 | Apr 25 | Jul 4 – Aug 29 | 70–110 |
| Scallions | Mar 28 | Apr 4 | Apr 25 | Jun 20 – Jul 18 | 50–70 |
| Scarlet Runner Beans | Mar 14 | Apr 25 | May 2 | Jul 4 – Aug 8 | 60–80 |
| Shallot | Mar 28 | Apr 4 | Apr 25 | Jul 25 – Sep 12 | 90–120 |
| Shiso | Mar 14 | May 2 | May 2 | Jun 27 – Aug 22 | 50–70 |
| Snap Peas | Mar 14 | Apr 25 | May 2 | Jun 27 – Aug 22 | 55–70 |
| Snow Peas | Mar 28 | Apr 4 | Apr 25 | Jun 20 – Aug 15 | 50–65 |
| Soybeans | — | May 2 | — | Jul 25 – Sep 19 | 80–120 |
| Spaghetti Squash | Mar 28 | Apr 25 | May 2 | Aug 1 – Aug 29 | 85–100 |
| Spinach | Mar 28 | Apr 4 | Apr 25 | May 30 – Aug 1 | 35–50 |
| Squash (Summer) | Mar 28 | Apr 25 | May 2 | Jun 20 – Aug 22 | 45–65 |
| Squash (Winter) | Mar 28 | Apr 25 | May 2 | Jul 25 – Sep 19 | 80–120 |
| Sunchoke | — | — | May 9 | Aug 29 – Oct 24 | 110–150 |
| Sunflower | Mar 14 | Apr 25 | May 2 | Jul 11 – Aug 29 | 70–100 |
| Sweet Corn | — | May 2 | — | Jul 4 – Aug 15 | 60–90 |
| Sweet Potatoes | Mar 14 | Apr 25 | May 2 | Aug 1 – Sep 19 | 90–120 |
| Tatsoi | Mar 28 | Apr 4 | Apr 25 | May 30 – Jul 4 | 35–50 |
| Tomatillo | Mar 14 | Apr 25 | May 2 | Jul 4 – Sep 12 | 60–85 |
| Tomatoes | Mar 14 | Apr 25 | May 2 | Jul 4 – Sep 12 | 60–85 |
| Turmeric | Mar 14 | Apr 25 | May 2 | Jan 2 – Feb 27 | 240–300 |
| Turnip | — | Apr 4 | — | May 16 – Jun 20 | 40–60 |
| Watercress | Mar 28 | Apr 4 | Apr 25 | Jun 6 – Jul 11 | 40–60 |
| Watermelon | Mar 28 | Apr 25 | May 2 | Jul 11 – Aug 29 | 70–100 |
| Wax Beans | — | May 2 | — | Jun 27 – Aug 22 | 50–65 |
| Winter Melon | Mar 14 | Apr 25 | May 2 | Aug 1 – Sep 19 | 90–120 |
| Yam | Mar 14 | Apr 25 | May 2 | Oct 31 – Feb 27 | 180–330 |
| Yard Long Beans | Mar 14 | Apr 25 | May 2 | Jun 27 – Aug 8 | 55–80 |
| Zucchini | Mar 28 | Apr 25 | May 2 | Jun 20 – Aug 15 | 45–60 |
🍓 Fruits to Grow in Tuolumne County
24 fruits that grow well in Zone 9b with planting dates for Tuolumne County.
Show all 24 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Alpine Strawberries | — | — | May 9 | Aug 8 – Nov 21 | 90–180 |
| Blackberries | — | — | May 9 | — | 365–730 |
| Boysenberries | — | — | May 9 | — | 365–730 |
| Cantaloupe | — | — | May 9 | Jul 18 – Aug 22 | 70–90 |
| Che Fruit | — | — | May 9 | — | 1095–1825 |
| Dragon Fruit | — | — | May 9 | — | 365–730 |
| Elderberries | — | — | May 9 | — | 730–1095 |
| Figs | — | — | May 9 | — | 730–1825 |
| Goji Berries | — | — | May 9 | — | 730–1095 |
| Grapes | — | — | May 9 | — | 730–1095 |
| Ground Cherry | — | — | May 9 | Jul 18 – Sep 12 | 65–80 |
| Guava | — | — | May 9 | — | 365–730 |
| Honeydew | — | — | May 9 | Aug 1 – Sep 12 | 80–110 |
| Kiwi | — | — | May 9 | — | 1095–1825 |
| Loquat | — | — | May 9 | — | 730–1825 |
| Mulberries | — | — | May 9 | — | 730–1825 |
| Passion Fruit | — | — | May 9 | — | 365–545 |
| Pawpaw | — | — | May 9 | — | 1095–2555 |
| Persimmon | — | — | May 9 | — | 1095–2555 |
| Pomegranate | — | — | May 9 | — | 730–1095 |
| Quince | — | — | May 9 | — | 1095–1825 |
| Raspberries | — | — | May 9 | — | 365–730 |
| Serviceberries | — | — | May 9 | — | 730–1095 |
| Strawberries | — | — | May 9 | Aug 8 – Mar 6 | 90–365 |
🌿 Herbs to Grow in Tuolumne County
40 herbs that grow well in Zone 9b with planting dates for Tuolumne County.
Show all 40 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Anise | Mar 28 | Apr 4 | Apr 18 | Jul 18 – Oct 3 | 90–120 |
| Basil | Mar 14 | May 2 | May 2 | Jun 27 – Aug 29 | 50–75 |
| Bee Balm | — | — | May 2 | Aug 1 – Oct 17 | 90–120 |
| Borage | Mar 28 | Apr 4 | Apr 18 | Jun 13 – Aug 1 | 50–60 |
| Caraway | Mar 28 | Apr 4 | Apr 18 | — | 365–450 |
| Catnip | — | — | May 2 | Jul 4 – Sep 5 | 60–80 |
| Chamomile | Mar 28 | Apr 4 | Apr 18 | Jun 20 – Aug 29 | 60–90 |
| Chervil | Mar 28 | Apr 4 | Apr 18 | May 30 – Aug 1 | 40–60 |
| Chives | — | — | May 2 | Jul 4 – Sep 12 | 60–90 |
| Cilantro | Mar 28 | Apr 4 | Apr 18 | May 30 – Aug 1 | 40–60 |
| Comfrey | — | — | May 2 | Jul 4 – Sep 12 | 60–90 |
| Cumin | Mar 28 | Apr 4 | Apr 18 | Aug 1 – Oct 3 | 100–120 |
| Dill | Mar 28 | Apr 4 | Apr 18 | May 30 – Aug 1 | 40–60 |
| Echinacea | — | — | May 2 | Sep 5 – Dec 12 | 120–180 |
| Epazote | Mar 14 | May 2 | May 2 | Jun 20 – Aug 15 | 45–60 |
| Fennel (herb) | Mar 28 | Apr 4 | Apr 18 | Jun 20 – Aug 29 | 60–90 |
| Feverfew | — | — | May 2 | Aug 1 – Oct 17 | 90–120 |
| Garlic Chives | — | — | May 2 | Jul 4 – Sep 12 | 60–90 |
| Horehound | — | — | May 2 | Jul 18 – Sep 12 | 75–90 |
| Hyssop | — | — | May 2 | Jul 11 – Sep 12 | 70–90 |
| Lavender | — | — | May 2 | Aug 1 – Jan 2 | 90–200 |
| Lemon Balm | — | — | May 2 | Jul 4 – Aug 22 | 60–70 |
| Lemon Thyme | — | — | May 2 | Jul 11 – Sep 12 | 70–90 |
| Lemon Verbena | Mar 14 | May 2 | May 2 | Jul 4 – Sep 12 | 60–90 |
| Lemongrass | Mar 14 | May 2 | May 2 | Jul 18 – Oct 17 | 75–120 |
| Marjoram | — | — | May 2 | Jul 4 – Sep 12 | 60–90 |
| Mint | — | — | May 2 | Jul 4 – Sep 12 | 60–90 |
| Oregano | — | — | May 2 | Jul 4 – Sep 12 | 60–90 |
| Parsley | Mar 28 | Apr 4 | Apr 18 | Jun 20 – Aug 22 | 60–80 |
| Rosemary | — | — | May 2 | Jul 25 – Dec 12 | 80–180 |
| Rue | — | — | May 2 | Jul 11 – Sep 12 | 70–90 |
| Sage | — | — | May 2 | Jul 18 – Sep 12 | 75–90 |
| Savory | — | — | May 2 | Jun 27 – Aug 22 | 50–70 |
| Sorrel | Mar 28 | Apr 4 | Apr 18 | May 30 – Aug 1 | 40–60 |
| Stevia | Mar 14 | May 2 | May 2 | Jul 4 – Sep 12 | 60–90 |
| Tarragon | — | — | May 2 | Jul 4 – Sep 12 | 60–90 |
| Thai Basil | Mar 14 | May 2 | May 2 | Jun 27 – Aug 29 | 50–75 |
| Thyme | — | — | May 2 | Jul 11 – Sep 12 | 70–90 |
| Valerian | — | — | May 2 | Sep 5 – Dec 12 | 120–180 |
| Yarrow | — | — | May 2 | Aug 1 – Oct 17 | 90–120 |
Monthly Planting Guide for Tuolumne County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Tuolumne County.
Frequently Asked Questions
What planting zone is Tuolumne County, CA?
Tuolumne County is in USDA Hardiness Zone 9b. 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 Tuolumne County, CA?
Based on 30 years of NOAA weather station data, the median last spring frost in Tuolumne County falls around April 25. In 8 out of 10 years, last frost lands between March 28 and June 20 — a 83-day window of variability. Use June 20 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in Tuolumne County, CA?
The median first fall frost in Tuolumne County arrives around October 27. In cold years it can arrive as early as August 15; in mild years as late as November 17. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Tuolumne County?
Tuolumne County has a frost-free growing season of approximately 185 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 9.29 days per decade.
What is the soil like in Tuolumne County for gardening?
Tuolumne County has predominantly Loam soil with a pH range of 6.6–7.5 and Well Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.
What is grown commercially in Tuolumne County?
Tuolumne County has commercial agriculture that includes Almonds, Grapes, Dairy, Rice. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is Tuolumne County a good location for home gardening?
Tuolumne County scores 46/100 (Moderate) on our Microclimate Index, which combines frost reliability, drought pressure, soil challenge, elevation risk, and long-term climate trend. Gardening here benefits from close attention to frost timing and season extension due to the challenging microclimate factors.
Your Tuolumne County Garden Planner — Free
A 24-page printable planner built for Tuolumne County (Zone 9b). 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