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Three Rivers, CA — Planting Guide for June

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Tulare County, California Zone 9b June

June to-do list for Tulare County, California

June rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Tulare County, California.

Avg. last frost February 17
Avg. first frost December 3
Soil temp (4") 69°F
Watering Critical
Pest pressure High
Daylight 14.5 hrs
  1. Start harvesting basil, cucumber, and green beans

    Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.

To set up a strong July, finish these tasks
  • First harvests: peppers, tomatoes, and ageratum

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Three Rivers gardens in a dry climate (only 15" annual precipitation). Watering strategy matters more here than in most of the country — drip irrigation, deep mulching, and morning watering aren't optional, they're table stakes. The flip side: pest and disease pressure are far lower than in humid regions, and your soil temperatures climb fast in spring so you can plant heat-lovers earlier than the zone map suggests.

Soils trend Loam — the gold standard for vegetables. Add 2–3" of compost annually to maintain it and you'll outgrow most of your neighbors.

Three Rivers averages 31.8 drought weeks per year (US Drought Monitor, 2000–present, trend stable). Treat irrigation as a year-round system, not a summer add-on.

🌡️ USDA Zone

9b (25°F to 30°F min)

❄️ Avg. Last Frost

February 17

🍂 Avg. First Frost

December 3

📅 Growing Season

290 days

🌧️ Climate

Semi Arid 14.7" annual

💨 Wind

Unknown 0.0 mph avg

🥶 Frost Tier

Regular 0% frost-free years

🏜️ Drought

31.8 wk/yr trend stable

📍 ZIP Codes

1 ZIP

Three Rivers, CA Year-round
289 days
❄
Last Spring Frost February 17
➔ 289 growing days ➔
❄
First Fall Frost December 3

Monthly Watering Calendar for Three Rivers

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: Most vegetables want about 1 inch of water per week. Three Rivers gets 15" a year — months that hit that 1"/week need zero supplemental watering; months that fall short, the table tells you how much to add. Saves you from drowning roots and from drought-stressing plants into bolting.

1"/wk 0" 1.3" 2.5" 3.8" 5" Jan 3.6" +0.6" Feb 3.7" +1.3" Mar 3" +2.8" Apr 1.5" +3.8" May 0.5" +4.2" Jun 0.1" +4.3" Jul 0" +4.3" Aug 0" +4.1" Sep 0.2" +3.6" Oct 0.7" +2.6" Nov 1.7" Dec 3.4"
Rainfall sufficient Supplemental water needed Heavy watering required - - - 1"/week garden need
View detailed monthly data
MonthAvg RainfallRainy DaysExtra Water NeededWatering Effort
Jan 3.6 in 8 days — None
Feb 3.7 in 9 days 0.6 in Moderate
Mar 3 in 7 days 1.3 in Moderate
Apr 1.5 in 5 days 2.8 in High
May 0.5 in 2 days 3.8 in Critical
Jun 0.1 in 0 days 4.2 in Critical
Jul 0 in 0 days 4.3 in Critical
Aug 0 in 0 days 4.3 in Critical
Sep 0.2 in 1 days 4.1 in Critical
Oct 0.7 in 3 days 3.6 in Critical
Nov 1.7 in 6 days 2.6 in High
Dec 3.4 in 9 days — None

Annual total: 18.4 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.

Three Rivers Soil Profile

Soil Type

Loam

Soil pH

5.9-7.2

Drainage

Well Drained

Frost Risk Probability

Based on 28 years of NOAA weather station data from 3 stations

Too early frost risk Safe to Plant Feb 17 → Dec 3 290 frost-free days Protect crops frost returns Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Safe: Apr 3 Protect by: Dec 22

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 3 Dec 22 263 days
Cautious Mar 4 Dec 6 277 days
Average year Feb 17 Dec 3 289 days
Optimistic Jan 28 Nov 26 302 days
Aggressive (risky) Jan 10 Nov 12 306 days
📊
How predictable are frost dates here?

Not very — frost dates can vary by ±84 days year-to-year. Use the "Conservative" row in the table below, and keep row covers handy for surprise late frosts.

Gardening Difficulty Score

45 Moderate
Frost Timing Risk
10.0/10
Drought Risk
7.5/10
Soil Difficulty
1.0/10
Altitude Challenge
9.7/10
Climate Shift
0.2/10
Rainfall Challenge
4.6/10

Tulare County presents some gardening challenges. Choose adapted varieties and plan around frost dates.

Zone 9b Frost Countdown
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Loading...
Last Frost: Feb 17 First Frost: Dec 3

Local Gardening Help in Tulare 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 Tulare County's climate and soil.

County Extension Office

Tulare 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.

Find Master Gardeners in CA →

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.

Request a Soil Test →

Services Available in Tulare County

Soil testing Pest management Water-wise gardening Master Gardener hotline
Finding local nurseries & garden centers in Tulare County

Why Buy Local

Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Tulare 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 Tulare County CA" or "garden center Tulare 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 Tulare County CA" or check your extension office and local parks department. Facebook groups like "Tulare 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.

After Cantaloupe (harvest ends Jun 16) 170 days until frost
Radish 22-35d Lettuce 30-60d Zucchini 45-60d Basil 50-75d Cucumber 50-70d
After Watermelon (harvest ends Jun 23) 163 days until frost
Radish 22-35d Lettuce 30-60d Zucchini 45-60d Basil 50-75d Cucumber 50-70d
After Cauliflower (harvest ends Jun 16) 170 days until frost
Radish 22-35d Lettuce 30-60d Zucchini 45-60d Basil 50-75d Cucumber 50-70d
After Zucchini (harvest ends Jun 9) 177 days until frost
Radish 22-35d Lettuce 30-60d Basil 50-75d Cucumber 50-70d Green Beans 50-65d
After Onion (harvest ends Jul 7) 149 days until frost
Radish 22-35d Lettuce 30-60d Zucchini 45-60d Basil 50-75d Cucumber 50-70d
After Squash (Summer) (harvest ends Jun 16) 170 days until frost
Radish 22-35d Lettuce 30-60d Zucchini 45-60d Basil 50-75d Cucumber 50-70d
Show 6 more succession options
After Squash (Winter) (harvest ends Jul 14) 142 days until frost
Radish 22-35d Lettuce 30-60d Zucchini 45-60d Basil 50-75d Cucumber 50-70d
After Okra (harvest ends Jun 16) 170 days until frost
Radish 22-35d Lettuce 30-60d Zucchini 45-60d Basil 50-75d Cucumber 50-70d
After Sweet Potatoes (harvest ends Jul 14) 142 days until frost
Radish 22-35d Lettuce 30-60d Zucchini 45-60d Basil 50-75d Cucumber 50-70d
After Hot Peppers (harvest ends Aug 11) 114 days until frost
Radish 22-35d Lettuce 30-60d Zucchini 45-60d Basil 50-75d Cucumber 50-70d
After Potatoes (harvest ends Jul 14) 142 days until frost
Radish 22-35d Lettuce 30-60d Zucchini 45-60d Basil 50-75d Cucumber 50-70d
After Kale (harvest ends Jun 9) 177 days until frost
Radish 22-35d Lettuce 30-60d Zucchini 45-60d Basil 50-75d Cucumber 50-70d

Sunlight & Day Length in Three Rivers

Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.

Quick context: Plants use day length as their seasonal clock. Some crops flower when days lengthen (most flowers), some when days shorten (chrysanthemums, soybeans). Three Rivers's curve is the timing layer beneath everything you grow.

Longest Day

14.5 hours

Summer solstice daylight

Shortest Day

9.5 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.

14hr 12hr 4h 7h 10h 13h 16h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daylight hours (sunrise to sunset) Peak sun hours (direct sunlight after cloud cover) ▪ Gold zone = long day (14+ hr) ▪ Blue zone = short day (<12 hr)

Onion tip: Day-neutral onion varieties like Candy, Cabernet, and Sierra Blanca perform best in your day-length range.

View detailed monthly data
MonthDaylight HoursPeak Sun HoursDay Length
January 9.8 hr 5.6 hr Short day
February 10.7 hr 6.2 hr Short day
March 11.7 hr 7.5 hr Short day
April 12.9 hr 9.3 hr Neutral
May 13.9 hr 11.2 hr Neutral
June 14.5 hr 12.5 hr Long day
July 14.2 hr 13.2 hr Long day
August 13.4 hr 12.4 hr Neutral
September 12.2 hr 10.4 hr Neutral
October 11.1 hr 8.6 hr Short day
November 10 hr 6.2 hr Short day
December 9.5 hr 5.2 hr Short day

Peak sun hours factor in typical cloud cover — use these for solar panel and shade-planning calculations.

Soil Temperature & Composting in Three Rivers

Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.

Why this matters: Watching soil temperature (not air) is the single biggest upgrade most new gardeners can make. Three Rivers's typical curve helps you plan — but a $5 soil thermometer in the bed beats any average.

Plant Warm Crops When

Soil reaches 60°F+

Soil warm enough from Jun through Oct.

Best Month to Compost

Jun

Microbial activity peaks when soil is warm.

Active Composting

7 months

Solid season. Piles go dormant in winter.

60°F 70°F 20° 38° 55° 73° 90° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
4" depth 8" depth - - - 60°F (corn, beans) - - - 70°F (tomatoes, peppers)
View detailed monthly data
MonthSoil 4" DeepSoil 8" DeepCompost ActivityTime to Finish
Jan 34°F 39°F ❄️ Dormant ~36 weeks
Feb 35°F 40°F ❄️ Dormant ~36 weeks
Mar 42°F 44°F 🐢 Slow ~24 weeks
Apr 50°F 51°F ♻️ Active ~14 weeks
May 59°F 59°F ♻️ Active ~14 weeks
Jun 69°F 65°F 🔥 Peak ~8 weeks
Jul 78°F 72°F 🔥 Peak ~8 weeks
Aug 76°F 75°F 🔥 Peak ~8 weeks
Sep 72°F 72°F 🔥 Peak ~8 weeks
Oct 60°F 65°F ♻️ Active ~14 weeks
Nov 49°F 55°F 🐢 Slow ~24 weeks
Dec 41°F 47°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 Three Rivers

Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.

The practical takeaway: Pest and disease pressure is the X-factor most beginners under-plan for. Three Rivers's climate determines whether you can mostly "plant and see" or whether you need a pest-management routine from the first seedling.

Insect Pest Pressure

7.9 / 10

High — expect multiple pest generations. Preventative measures essential.

Disease Risk

2.6 / 10

Low disease risk — dry conditions reduce fungal problems.

Seasonal Risk

Spring High
Summer High
Fall High
Winter Low
View 6 common pests in your area
PestRisk LevelPeak Months
Aphids High Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
Whiteflies High Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
Spider mites High May, Jun, Jul, Aug, Sep, Oct
Fire ants Moderate Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
Thrips Moderate Apr, May, Jun, Jul, Aug
Leaf miners Moderate Mar, Apr, May, Jun
Organic pest management tips
  • Use row covers on susceptible crops during peak pest months
  • Apply neem oil preventatively every 7-14 days during active pest season
  • Interplant with strong-scented herbs (basil, marigold) to confuse pests
  • Hand-pick larger pests (beetles, caterpillars) in early morning when they're sluggish
  • Practice crop rotation — never plant the same family in the same spot within 3 years

Cover Crops for Three Rivers

Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with planting dates calibrated for your area.

Why it matters: In Three Rivers, cover crops also crowd out weeds. The denser the cover, the less weed pressure next season. Pays for itself in saved weeding time.

Spring Cover Crops (4 options) — Build soil before the main growing season
Crop Plant By Terminate N-Fixing Soil Benefit
Buckwheat Mar 1 Sep 24 — Rapid growth, attracts pollinators, suppresses weeds
Cowpeas (southern peas) Mar 1 Oct 8 ✓ Yes Excellent nitrogen fixer for warm climates, edible
Sorghum-sudan grass Feb 27 Oct 1 — Massive biomass, breaks compaction, suppresses nematodes
White clover Jan 21 Oct 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 Mar 16 Nov 19 — Deep roots break compaction, attract pollinators and beneficial insects
Fall Cover Crops (4 options) — Plant after harvest to protect soil over winter
Crop Plant By Terminate N-Fixing Soil Benefit
Austrian winter peas Sep 21 Jan 27 ✓ Yes Fixes nitrogen, good for heavy clay soils
Crimson clover Oct 8 Feb 3 ✓ Yes Fixes nitrogen, attracts pollinators in spring
Daikon radish Oct 6 Jan 27 — Deep taproot breaks compaction, excellent for clay soils
Hairy vetch Sep 17 Jan 27 ✓ Yes Excellent nitrogen fixer, good for depleted soils

Wind & Microclimate in Three Rivers

For new gardeners: Wind is the silent water thief. Every breeze pulls moisture from leaves and soil. Three Rivers's 0.0 mph average is one piece of the watering math: rainfall + irrigation must exceed evaporation + transpiration, and wind boosts both losses.

Wind dries soil, stresses plants, and affects frost patterns. Understanding your exposure helps with garden placement.

Seasonal Wind Speed

Spring: 12 mph   Summer: 10 mph

Fall: 8 mph   Winter: 10 mph

Prevailing wind: W. Moderate wind — consider a temporary windbreak for young seedlings.

Windbreak Benefit

5.1/10

Moderately beneficial — a simple fence or trellis can protect delicate crops from wind stress.

Frost Pocket Risk

Moderate

Some terrain variation (454 ft range). Garden on slopes or higher ground if possible to avoid late-season frost pockets.

Rainwater Harvesting in Three Rivers

How much water you can collect, when to collect it, and what size system you need for your garden.

For new gardeners: Rainwater is unchlorinated, unfluoridated, and at ambient temperature — plants actually prefer it. Three Rivers's 15" annual rainfall means even a small 50-gallon barrel catches enough for a few weeks of garden watering between storms.

Annual Collection

9,170 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 2,500 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

May, Jun, Jul, Aug, Sep, Oct

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 18.4 inches of rain per year
  • A 1,000 sq ft roof can collect roughly 9,170 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

🥬 Vegetables to Grow in Three Rivers

114 vegetables matched to Zone 9b with planting dates calibrated for Three Rivers.

Show all 114 vegetables with dates
Plant Start Indoors Direct Sow Transplant Fall Plant Harvest Days to Maturity
Acorn Squash Jan 20 Feb 17 Feb 24 — May 19 – Jun 23 80–100
Amaranth Jan 6 Feb 17 Feb 24 — May 26 – Jul 14 90–120
Artichoke — — Mar 3 — Jul 7 – Sep 15 120–180
Arugula Jan 20 Jan 27 Feb 17 Oct 8 Mar 24 – May 26 30–50
Asparagus — — Mar 3 — — 730–1095
Beets — Jan 27 — Oct 8 Mar 24 – Apr 21 50–70
Belgian Endive Jan 20 Jan 27 Feb 17 Oct 8 Jun 9 – Aug 4 110–150
Bitter Melon Jan 6 Feb 17 Feb 24 — Apr 28 – Jun 9 60–90
Black Beans — Feb 24 — — May 26 – Jul 14 90–120
Bok Choy Jan 20 Jan 27 Feb 17 Oct 8 Mar 31 – May 5 40–60
Broccoli Jan 20 Jan 27 Feb 17 Oct 8 Apr 21 – Jun 2 60–90
Broccoli Rabe Jan 20 Jan 27 Feb 17 Oct 8 Mar 31 – May 5 40–60
Brussels Sprouts Jan 20 Jan 27 Feb 17 Oct 8 May 19 – Jul 14 90–130
Butternut Squash Jan 20 Feb 17 Feb 24 — May 26 – Jun 30 85–110
Cabbage Jan 20 Jan 27 Feb 17 Oct 8 Apr 21 – Jun 16 60–100
Calabash Jan 6 Feb 17 Feb 24 — May 19 – Jul 14 80–120
Cardoon — — Mar 3 — Jul 7 – Aug 18 120–150
Carrots — Jan 27 — Oct 8 Mar 31 – May 5 60–80
Cauliflower Jan 20 Jan 27 Feb 17 Oct 8 Apr 14 – Jun 16 55–100
Celeriac Jan 20 Jan 27 Feb 17 Oct 8 Jun 2 – Jul 7 100–120
Celery Jan 20 Jan 27 Feb 17 Oct 8 May 12 – Jul 7 80–120
Celtuce Jan 20 Jan 27 Feb 17 Oct 8 Apr 21 – Jun 2 60–90
Chard Jan 20 Jan 27 Feb 17 Oct 8 Apr 14 – Jun 2 50–60
Chayote Jan 6 Feb 17 Feb 24 — Jun 30 – Sep 8 120–180
Chickpeas Jan 20 Jan 27 Feb 17 Oct 8 May 12 – Jun 23 80–110
Chicory Jan 20 Jan 27 Feb 17 Oct 8 Apr 21 – Jun 2 60–85
Chinese Cabbage Jan 20 Jan 27 Feb 17 Oct 8 Apr 14 – May 12 50–70
Christmas Lima Beans Jan 6 Feb 17 Feb 24 — May 19 – Jun 23 80–100
Collard Greens Jan 20 Jan 27 Feb 17 Oct 8 Apr 14 – Jun 16 55–75
Corn — Feb 24 — — Apr 28 – Jun 23 60–100
Cowpeas — Feb 24 — — Apr 28 – Jun 9 60–90
Cress Jan 20 Jan 27 Feb 17 Oct 8 Mar 3 – Mar 24 14–21
Crookneck Squash Jan 20 Feb 17 Feb 24 — Apr 14 – May 12 45–60
Crosne — Jan 27 — Oct 8 Jun 30 – Sep 1 150–200
Cucumber Jan 20 Feb 17 Feb 24 — Apr 21 – Jun 16 50–70
Daikon — Jan 27 — Oct 8 Mar 24 – Apr 21 50–70
Delicata Squash Jan 20 Feb 17 Feb 24 — May 19 – Jun 23 80–100
Edamame — Feb 24 — — May 12 – Jun 23 75–100
Eggplant Jan 6 Feb 17 Feb 24 — May 5 – Jul 7 65–85
Endive Jan 20 Jan 27 Feb 17 Oct 8 Apr 7 – May 12 45–65
Escarole Jan 20 Jan 27 Feb 17 Oct 8 Apr 14 – May 12 50–70
Fava Beans Jan 20 Jan 27 Feb 17 Oct 8 May 5 – Jun 16 75–100
Fennel Jan 6 Feb 17 Feb 24 — Apr 28 – Jun 9 60–90
Garlic — — — Oct 22 Jan 21 – Jul 8 90–240
Ginger Jan 6 Feb 17 Feb 24 — Oct 27 – Dec 22 240–300
Green Beans — Feb 24 — — Apr 21 – Jun 16 50–65
Horseradish — — Mar 3 — Jul 7 – Sep 15 120–180
Hot Peppers Jan 6 Feb 17 Feb 24 — May 5 – Aug 11 70–120
Hubbard Squash Jan 20 Feb 17 Feb 24 — Jun 9 – Jul 14 100–120
Jicama Jan 6 Feb 17 Feb 24 — Jun 30 – Sep 8 120–180
Kabocha Jan 20 Feb 17 Feb 24 — May 26 – Jun 23 85–100
Kai Lan Jan 20 Jan 27 Feb 17 Oct 8 Apr 7 – May 5 45–60
Kale Jan 20 Jan 27 Feb 17 Oct 8 Apr 14 – Jun 9 50–70
Kidney Beans — Feb 24 — — May 26 – Jun 30 85–110
Kohlrabi Jan 20 Jan 27 Feb 17 Oct 8 Apr 7 – May 12 45–65
Komatsuna Jan 20 Jan 27 Feb 17 Oct 8 Mar 24 – Apr 28 35–50
Leeks Jan 20 Jan 27 Feb 17 Oct 8 May 19 – Aug 4 90–150
Lentils Jan 20 Jan 27 Feb 17 Oct 8 May 12 – Jun 23 80–110
Lettuce Jan 20 Jan 27 Feb 17 Oct 8 Mar 24 – Jun 2 30–60
Lima Beans — Feb 24 — — Apr 28 – Jun 9 60–90
Loofah Jan 6 Feb 17 Feb 24 — Jun 9 – Aug 11 100–150
Luffa Jan 6 Feb 17 Feb 24 — May 26 – Aug 11 90–150
Mache Jan 20 Jan 27 Feb 17 Oct 8 Mar 31 – May 5 40–60
Malabar Spinach Jan 6 Feb 17 Feb 24 — Apr 21 – May 19 55–70
Melon Jan 20 Feb 17 Feb 24 — May 5 – Jun 23 70–100
Microgreens Jan 20 Jan 27 Feb 17 Oct 8 Feb 24 – Mar 24 7–21
Mitsuba Jan 20 Jan 27 Feb 10 Oct 8 Apr 7 – Jun 2 50–70
Mizuna Jan 20 Jan 27 Feb 17 Oct 8 Mar 24 – Apr 21 30–45
Mustard Greens Jan 20 Jan 27 Feb 17 Oct 8 Mar 24 – May 26 30–50
Napa Cabbage Jan 20 Jan 27 Feb 17 Oct 8 Apr 14 – May 19 55–75
New Zealand Spinach Jan 6 Feb 17 Feb 24 — Apr 21 – May 19 55–70
Okra Jan 6 Feb 17 Feb 24 — Apr 21 – Jun 16 50–65
Onion Jan 20 Jan 27 Feb 17 Oct 8 May 19 – Jul 7 90–120
Pac Choi Jan 20 Jan 27 Feb 17 Oct 8 Mar 31 – Apr 28 40–55
Parsnip — Jan 27 — Oct 8 May 12 – Jun 23 100–130
Patty Pan Squash Jan 20 Feb 17 Feb 24 — Apr 14 – May 12 45–60
Peas Jan 20 Jan 27 Feb 17 Oct 8 Apr 14 – Jun 9 55–70
Peppers Jan 6 Feb 17 Feb 24 — Apr 28 – Jul 7 60–90
Pole Beans Jan 6 Feb 17 Feb 24 — Apr 21 – Jun 16 55–70
Potatoes Jan 6 Feb 17 Feb 24 — May 5 – Jul 14 70–120
Pumpkin Jan 20 Feb 17 Feb 24 — May 26 – Jul 14 85–120
Purslane Jan 20 Jan 27 Feb 17 Oct 8 Mar 31 – May 5 40–60
Radicchio Jan 20 Jan 27 Feb 17 Oct 8 Apr 21 – May 26 60–80
Radish — Jan 27 — Oct 8 Feb 24 – Mar 17 22–35
Romanesco Jan 20 Jan 27 Feb 17 Oct 8 May 5 – Jun 16 75–100
Rutabaga — Jan 27 — Oct 8 Apr 21 – May 26 80–100
Salsify — Jan 27 — Oct 8 May 12 – Jun 23 100–130
Savoy Cabbage Jan 20 Jan 27 Feb 17 Oct 8 Apr 28 – Jun 23 70–110
Scallions Jan 20 Jan 27 Feb 17 Oct 8 Apr 14 – May 12 50–70
Scarlet Runner Beans Jan 6 Feb 17 Feb 24 — Apr 28 – Jun 2 60–80
Shallot Jan 20 Jan 27 Feb 17 Oct 8 May 19 – Jul 7 90–120
Shiso Jan 6 Feb 24 Feb 24 — Apr 21 – Jun 16 50–70
Snap Peas Jan 6 Feb 17 Feb 24 — Apr 21 – Jun 16 55–70
Snow Peas Jan 20 Jan 27 Feb 17 Oct 8 Apr 14 – Jun 9 50–65
Soybeans — Feb 24 — — May 19 – Jul 14 80–120
Spaghetti Squash Jan 20 Feb 17 Feb 24 — May 26 – Jun 23 85–100
Spinach Jan 20 Jan 27 Feb 17 Oct 8 Mar 24 – May 26 35–50
Squash (Summer) Jan 20 Feb 17 Feb 24 — Apr 14 – Jun 16 45–65
Squash (Winter) Jan 20 Feb 17 Feb 24 — May 19 – Jul 14 80–120
Sunchoke — — Mar 3 — Jun 23 – Aug 18 110–150
Sweet Corn — Feb 24 — — Apr 28 – Jun 9 60–90
Sweet Potatoes Jan 6 Feb 17 Feb 24 — May 26 – Jul 14 90–120
Tatsoi Jan 20 Jan 27 Feb 17 Oct 8 Mar 24 – Apr 28 35–50
Tomatillo Jan 6 Feb 17 Feb 24 — Apr 28 – Jul 7 60–85
Tomatoes Jan 6 Feb 17 Feb 24 — Apr 28 – Jul 7 60–85
Turmeric Jan 6 Feb 17 Feb 24 — Oct 27 – Dec 22 240–300
Turnip — Jan 27 — Oct 8 Mar 10 – Apr 14 40–60
Watercress Jan 20 Jan 27 Feb 17 Oct 8 Mar 31 – May 5 40–60
Watermelon Jan 20 Feb 17 Feb 24 — May 5 – Jun 23 70–100
Wax Beans — Feb 24 — — Apr 21 – Jun 16 50–65
Winter Melon Jan 6 Feb 17 Feb 24 — May 26 – Jul 14 90–120
Yam Jan 6 Feb 17 Feb 24 — Aug 25 – Dec 22 180–330
Yard Long Beans Jan 6 Feb 17 Feb 24 — Apr 21 – Jun 2 55–80
Zucchini Jan 20 Feb 17 Feb 24 — Apr 14 – Jun 9 45–60

🍓 Fruits to Grow in Three Rivers

24 fruits matched to Zone 9b with planting dates calibrated for Three Rivers.

Show all 24 fruits with dates
Plant Start Indoors Direct Sow Transplant Fall Plant Harvest Days to Maturity
Alpine Strawberries — — Mar 3 — Jun 2 – Sep 15 90–180
Blackberries — — Mar 3 — — 365–730
Boysenberries — — Mar 3 — — 365–730
Cantaloupe — — Mar 3 — May 12 – Jun 16 70–90
Che Fruit — — Mar 3 — — 1095–1825
Dragon Fruit — — Mar 3 — — 365–730
Elderberries — — Mar 3 — — 730–1095
Figs — — Mar 3 — — 730–1825
Goji Berries — — Mar 3 — — 730–1095
Grapes — — Mar 3 — — 730–1095
Ground Cherry — — Mar 3 — May 12 – Jul 7 65–80
Guava — — Mar 3 — — 365–730
Honeydew — — Mar 3 — May 26 – Jul 7 80–110
Kiwi — — Mar 3 — — 1095–1825
Loquat — — Mar 3 — — 730–1825
Mulberries — — Mar 3 — — 730–1825
Passion Fruit — — Mar 3 — — 365–545
Pawpaw — — Mar 3 — — 1095–2555
Persimmon — — Mar 3 — — 1095–2555
Pomegranate — — Mar 3 — — 730–1095
Quince — — Mar 3 — — 1095–1825
Raspberries — — Mar 3 — — 365–730
Serviceberries — — Mar 3 — — 730–1095
Strawberries — — Mar 3 — Jun 2 – Dec 29 90–365

🌿 Herbs to Grow in Three Rivers

37 herbs matched to Zone 9b with planting dates calibrated for Three Rivers.

Show all 37 herbs with dates
Plant Start Indoors Direct Sow Transplant Fall Plant Harvest Days to Maturity
Anise Jan 20 Jan 27 Feb 10 Oct 8 May 12 – Jul 28 90–120
Basil Jan 6 Feb 24 Feb 24 — Apr 21 – Jun 23 50–75
Bee Balm — — Feb 24 — May 26 – Aug 11 90–120
Borage Jan 20 Jan 27 Feb 10 Oct 8 Apr 7 – May 26 50–60
Caraway Jan 20 Jan 27 Feb 10 Oct 8 — 365–450
Catnip — — Feb 24 — Apr 28 – Jun 30 60–80
Chamomile Jan 20 Jan 27 Feb 10 Oct 8 Apr 14 – Jun 23 60–90
Chervil Jan 20 Jan 27 Feb 10 Oct 8 Mar 24 – May 26 40–60
Chives — — Feb 24 — Apr 28 – Jul 7 60–90
Cilantro Jan 20 Jan 27 Feb 10 Oct 8 Mar 24 – May 26 40–60
Comfrey — — Feb 24 — Apr 28 – Jul 7 60–90
Cumin Jan 20 Jan 27 Feb 10 Oct 8 May 26 – Jul 28 100–120
Dill Jan 20 Jan 27 Feb 10 Oct 8 Mar 24 – May 26 40–60
Epazote Jan 6 Feb 24 Feb 24 — Apr 14 – Jun 9 45–60
Fennel (herb) Jan 20 Jan 27 Feb 10 Oct 8 Apr 14 – Jun 23 60–90
Feverfew — — Feb 24 — May 26 – Aug 11 90–120
Garlic Chives — — Feb 24 — Apr 28 – Jul 7 60–90
Horehound — — Feb 24 — May 12 – Jul 7 75–90
Hyssop — — Feb 24 — May 5 – Jul 7 70–90
Lemon Balm — — Feb 24 — Apr 28 – Jun 16 60–70
Lemon Thyme — — Feb 24 — May 5 – Jul 7 70–90
Lemon Verbena Jan 6 Feb 24 Feb 24 — Apr 28 – Jul 7 60–90
Lemongrass Jan 6 Feb 24 Feb 24 — May 12 – Aug 11 75–120
Marjoram — — Feb 24 — Apr 28 – Jul 7 60–90
Mint — — Feb 24 — Apr 28 – Jul 7 60–90
Oregano — — Feb 24 — Apr 28 – Jul 7 60–90
Parsley Jan 20 Jan 27 Feb 10 Oct 8 Apr 14 – Jun 16 60–80
Rosemary — — Feb 24 — May 19 – Oct 6 80–180
Rue — — Feb 24 — May 5 – Jul 7 70–90
Sage — — Feb 24 — May 12 – Jul 7 75–90
Savory — — Feb 24 — Apr 21 – Jun 16 50–70
Sorrel Jan 20 Jan 27 Feb 10 Oct 8 Mar 24 – May 26 40–60
Stevia Jan 6 Feb 24 Feb 24 — Apr 28 – Jul 7 60–90
Tarragon — — Feb 24 — Apr 28 – Jul 7 60–90
Thai Basil Jan 6 Feb 24 Feb 24 — Apr 21 – Jun 23 50–75
Thyme — — Feb 24 — May 5 – Jul 7 70–90
Valerian — — Feb 24 — Jun 30 – Oct 6 120–180

🌸 Flowers to Grow in Three Rivers

42 flowers matched to Zone 9b with planting dates calibrated for Three Rivers.

Show all 42 flowers with dates
Plant Start Indoors Direct Sow Transplant Fall Plant Bloom Days to Maturity
Ageratum Jan 6 Jan 27 Jan 27 — Mar 24 – Sep 22 60–75
Alliums — — — Nov 12 Dec 10 – Dec 31 28–42
Anemones — — — Oct 22 Oct 22 – Nov 19 90–120
Bachelor's Button — Dec 16 Jan 13 Sep 24 Mar 10 – Jun 30 60–90
Begonias Dec 9 — Jan 20 — Mar 31 – Oct 13 70–90
Black-eyed Susan Dec 23 Jan 27 Feb 3 — Apr 14 – Sep 1 60–80
Calendula — Dec 16 Jan 13 Sep 10 Feb 24 – Jun 16 50–70
California Poppy — — — Aug 27 Nov 5 – Mar 11 60–90
Celosia Jan 20 Jan 27 Jan 27 — Mar 31 – Oct 20 60–90
Coreopsis Dec 23 Jan 27 Feb 3 — Mar 31 – Sep 1 60–80
Cosmos Jan 20 Jan 13 Jan 13 — Mar 24 – Sep 22 60–90
Daffodils — — — Nov 5 Oct 22 – Nov 12 20–40
Dahlias — Feb 17 Feb 17 — Apr 28 – Nov 10 70–120
Daylily Dec 23 — Feb 3 — Apr 14 – Oct 13 60–90
Dianthus Dec 23 Dec 16 Dec 16 — Feb 3 – Mar 31 60–80
Echinacea (Purple Coneflower) Dec 23 Feb 3 Feb 3 — Apr 14 – Sep 1 70–90
Freesia — — — Oct 22 Oct 29 – Dec 3 84–112
Gaillardia (Blanket Flower) Jan 6 Jan 27 Jan 27 — Apr 7 – Oct 6 70–100
Geraniums Dec 9 — Jan 20 — Mar 31 – Oct 13 70–100
Gladiolus — Feb 17 Feb 17 — Apr 28 – Nov 10 70–100
Hyacinths — — — Nov 12 Nov 12 – Dec 3 14–28
Impatiens Dec 23 — Jan 27 — Apr 7 – Oct 6 60–75
Irises — Division Jan 27 — Mar 17 – Apr 21 60–100
Larkspur — — — Oct 1 Dec 10 – Mar 18 60–90
Lavender Dec 23 — Jan 27 — Apr 7 – Jun 30 90–120
Lobelia Dec 23 — Dec 16 — Feb 10 – Mar 10 70–80
Marigolds Jan 13 Jan 27 Jan 27 — Mar 24 – Sep 15 50–70
Nasturtium Jan 20 Jan 20 Jan 20 — Mar 17 – Sep 29 55–65
Pansy Dec 9 — Jan 13 Sep 10 Mar 3 – May 19 70–90
Petunia Dec 23 — Jan 27 — Apr 7 – Sep 22 70–90
Portulaca Jan 20 Jan 27 Jan 27 — Mar 17 – Oct 6 50–70
Ranunculus — — — Oct 22 Oct 29 – Nov 26 90–120
Roses Dec 23 — Jan 27 — Apr 7 – Oct 6 90–180
Salvia Dec 23 — Jan 20 — Mar 31 – Sep 29 70–90
Sedum (Stonecrop) Dec 23 — Jan 27 — May 19 – Jul 28 60–90
Snapdragon — Dec 16 Jan 13 Sep 10 Mar 17 – Jul 28 70–100
Sunflower Jan 27 Jan 20 Jan 20 — Apr 14 – Sep 29 70–100
Sweet Alyssum — Dec 16 Jan 13 Sep 24 Feb 17 – May 19 45–60
Sweet Pea — — — Sep 24 Dec 3 – Jan 14 65–85
Vinca (Annual) Dec 9 — Jan 20 — Mar 31 – Oct 13 70–90
Yarrow Dec 23 Jan 27 Feb 3 — Mar 31 – Aug 4 60–90
Zinnia Jan 20 Jan 20 Jan 20 — Mar 31 – Sep 29 60–70

Monthly Planting Guide for Three Rivers

ZIP Codes in Three Rivers

Click any ZIP to see its specific frost, soil, and climate measurements (some ZIPs differ noticeably from the town aggregate):