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San Augustine County, TX — Planting Guide

San Augustine County, Texas Zone 9a May

Your May game plan for San Augustine County, Texas

We've pulled the most time-sensitive tasks for San Augustine County, Texas this May and put them front and centre. Tackle them in order.

Avg. last frost March 5
Avg. first frost November 16
Soil temp (4") 71°F
Watering Low
Pest pressure High
Daylight 13.6 hrs
  1. Start harvesting basil, carrots, and cucumber

    Taste as you pick. The first ripe produce is the best feedback loop you'll get all season.

June will be here before you know it — start on
  • First harvests: basil, cucumber, and green beans

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San Augustine County is in USDA Zone 9a. The average last spring frost is March 5 and the first fall frost is November 16, giving you a growing season of approximately 256 days.

At an elevation of 146 ft, San Augustine County receives approximately 62.7 in of rainfall annually. Summer highs average 96°F with winter lows around 36°F. The predominant soil type is Sandy Loam.

Based on 31 years of NOAA climate station data, the last frost date here varies by 57 days year to year — ranging from February 4 in warm years to April 1 in cold years. The growing season is trending longer by about 2.55 days per decade. San Augustine County scores 41/100 (Moderate) on the Microclimate Index.

🌡️ Zone

9a (°F to °F min)

❄️ Last Frost

March 5

🍂 First Frost

November 16

📅 Growing Season

256 days

⛰️ Elevation

146 ft

🌧️ Annual Rainfall

62.7 in

San Augustine County, TX Long season
256 days
Last Spring Frost March 5
256 growing days
First Fall Frost November 16

Monthly Watering Calendar

When you'll need to water your garden — based on average monthly rainfall vs. the ~1 inch/week most gardens need.

1"/wk 0" 2.7" 5.4" 8" 10.7" Jan 1.5" +2.4" Feb 1.9" Mar 3.6" Apr 6.2" May 8.2" Jun 10.7" Jul 8.7" Aug 8.2" Sep 5.8" Oct 4.2" +2" Nov 2.3" Dec 1.5"
Rainfall sufficient Supplemental water needed Heavy watering required - - - 1"/week garden need
View detailed monthly data
MonthAvg RainfallRainy DaysExtra Water NeededWatering Effort
Jan 1.5 in 4 days None
Feb 1.9 in 4 days 2.4 in High
Mar 3.6 in 6 days 0.7 in Moderate
Apr 6.2 in 8 days Low
May 8.2 in 9 days Low
Jun 10.7 in 9 days Low
Jul 8.7 in 7 days Low
Aug 8.2 in 6 days Low
Sep 5.8 in 5 days Low
Oct 4.2 in 4 days 0.1 in Low
Nov 2.3 in 3 days 2 in High
Dec 1.5 in 4 days None

Annual total: 62.8 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.

San Augustine County Soil Profile

Soil Type

Sandy Loam

Soil pH

5.4-6.6

Drainage

Well Drained

Frost Risk Probability

Based on 31 years of NOAA weather station data from 3 stations

Too early frost risk Safe to Plant Mar 5 → Nov 16 256 frost-free days Protect crops frost returns Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Safe: Apr 1 Protect by: Dec 3

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 1 Dec 3 246 days
Cautious Mar 19 Nov 23 249 days
Average year Mar 5 Nov 16 256 days
Optimistic Feb 25 Nov 12 260 days
Aggressive (risky) Feb 4 Oct 31 269 days
📊
How predictable are frost dates here?

Not very — frost dates can vary by ±57 days year-to-year. Use the "Conservative" row in the table below, and keep row covers handy for surprise late frosts.

🌱
Is the growing season changing?

Yes — growing seasons are getting longer here (about 2.6 days per decade). Spring is arriving earlier than it used to. Good news for gardeners.

Gardening Difficulty Score

41 Moderate
Frost Timing Risk
10.0/10
Drought Risk
5.5/10
Soil Difficulty
3.0/10
Altitude Challenge
0.0/10
Climate Shift
10.0/10
Rainfall Challenge
7.1/10

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

Zone 9a Frost Countdown
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Loading...
Last Frost: Mar 5 First Frost: Nov 16

Local Gardening Help in San Augustine 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 San Augustine County's climate and soil.

County Extension Office

San Augustine County Texas A&M AgriLife Extension Extension Office

Phone: 979-845-7800

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 TX →

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 San Augustine County

Soil testing Pest management Master Gardener program Water conservation
Finding local nurseries & garden centers in San Augustine County

Why Buy Local

Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to San Augustine 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 San Augustine County TX" or "garden center San Augustine 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 San Augustine County TX" or check your extension office and local parks department. Facebook groups like "San Augustine County Gardeners" or "Texas 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
After Peas (harvest ends Jun 25) 144 days until frost
After Broccoli (harvest ends Jun 18) 151 days until frost
After Chard (harvest ends Jun 18) 151 days until frost
After Squash (Winter) (harvest ends Jul 30) 109 days until frost
After Potatoes (harvest ends Jul 30) 109 days until frost
After Hot Peppers (harvest ends Aug 27) 81 days until frost

Sunlight & Day Length

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

Longest Day

14 hours

Summer solstice daylight

Shortest Day

10 hours

Winter solstice daylight

Peak Sun Hours

10 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 12h 15h 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 10.2 hr 5.5 hr Short day
February 10.9 hr 6.4 hr Short day
March 11.8 hr 6.9 hr Short day
April 12.8 hr 7.7 hr Neutral
May 13.6 hr 8.2 hr Neutral
June 14 hr 10 hr Long day
July 13.9 hr 9.8 hr Neutral
August 13.1 hr 9.2 hr Neutral
September 12.2 hr 8 hr Neutral
October 11.2 hr 7.3 hr Short day
November 10.4 hr 6.2 hr Short day
December 10 hr 5.6 hr Short day

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

Soil Temperature & Composting Calendar

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

Plant Warm Crops When

Soil reaches 60°F+

Soil warm enough from Apr through Nov.

Best Month to Compost

May

Microbial activity peaks when soil is warm.

Active Composting

10 months

Nearly year-round composting.

60°F 70°F 30° 50° 70° 90° 110° 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 45°F 53°F 🐢 Slow ~24 weeks
Feb 46°F 51°F 🐢 Slow ~24 weeks
Mar 52°F 57°F ♻️ Active ~14 weeks
Apr 62°F 63°F ♻️ Active ~14 weeks
May 71°F 71°F 🔥 Peak ~8 weeks
Jun 84°F 79°F 🔥 Peak ~8 weeks
Jul 92°F 84°F 🔥 Peak ~8 weeks
Aug 93°F 86°F 🔥 Peak ~8 weeks
Sep 86°F 85°F 🔥 Peak ~8 weeks
Oct 75°F 75°F 🔥 Peak ~8 weeks
Nov 63°F 66°F ♻️ Active ~14 weeks
Dec 50°F 59°F ♻️ Active ~14 weeks

Highlighted rows = soil 60°F+ (safe for warm-season transplants). Compost finishes fastest during peak activity months.

Pest & Disease Pressure in San Augustine County

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

Insect Pest Pressure

7.5 / 10

High — expect multiple pest generations. Preventative measures essential.

Disease Risk

7.7 / 10

High fungal/bacterial risk. Space plants for airflow, water at soil level.

Seasonal Risk

Spring High
Summer High
Fall High
Winter Low
View 6 common pests in your area
PestRisk LevelPeak 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 Moderate 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 San Augustine 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 Mar 17 Sep 7 Rapid growth, attracts pollinators, suppresses weeds
Cowpeas (southern peas) Mar 11 Sep 21 ✓ Yes Excellent nitrogen fixer for warm climates, edible
Sorghum-sudan grass Mar 13 Sep 21 Massive biomass, breaks compaction, suppresses nematodes
White clover Feb 7 Sep 21 ✓ 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 17 Oct 26 Deep roots break compaction, attract pollinators and beneficial insects
Fall Cover Crops (7 options) — Plant after harvest to protect soil over winter
Crop Plant By Terminate N-Fixing Soil Benefit
Austrian winter peas Sep 15 Feb 19 ✓ Yes Fixes nitrogen, good for heavy clay soils
Crimson clover Sep 13 Feb 19 ✓ Yes Fixes nitrogen, attracts pollinators in spring
Daikon radish Sep 18 Feb 12 Deep taproot breaks compaction, excellent for clay soils
Hairy vetch Sep 5 Feb 12 ✓ Yes Excellent nitrogen fixer, good for depleted soils
Oats Oct 9 Feb 12 Quick biomass, winterkills in cold zones — no spring tillage needed
Winter rye Aug 23 Feb 19 Suppresses weeds, prevents erosion, breaks up compacted soil
Winter wheat Aug 11 Feb 19 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: 16 mph   Summer: 12 mph

Fall: 12 mph   Winter: 14 mph

Prevailing wind: S. Windy area — plant a windbreak hedge on the S side of your garden.

Windbreak Benefit

6.7/10

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

Frost Pocket Risk

Low

Relatively flat terrain (392 ft range). Frost pocket risk is minimal — garden placement is flexible.

Rainwater Harvesting Potential

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

Annual Collection

31,299 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 1,500 gal tank.

Legal Status

Unrestricted

Rainwater harvesting is fully legal in your state with no restrictions.

Best Collection Months

May, Jun, Jul, Aug

Highest rainfall months — your barrels will fill up quickly during these months.

Months to Draw From Storage

Jan, Feb, Dec

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 62.8 inches of rain per year
  • A 1,000 sq ft roof can collect roughly 31,299 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

Soil & Growing Conditions in San Augustine County

Soil Type

Sandy Loam

Soil pH 5.4–6.6 · Well Drained drainage

Good candidate for raised beds to maximise drainage and extend the season.

Watering Needs

Drought stress: 5.5/10

Moderate drought pressure. Drip irrigation and mulching are highly recommended to maintain soil moisture through summer.

Season Tips

256-day frost-free season

Your long season supports multiple successions and heat-demanding crops like melons, sweet potatoes, and peppers. Plant warm-season crops as soon as soil warms.

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.

Instant PDF download. No spam, unsubscribe any time.

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Recommended for Your Garden

☀️
Garden Shade Cloth $15-35

Reduce heat stress and sun scorch in hot climates with UV-stabilized shade cloth.

🫧
Vermiculite $12-22

Retain moisture and nutrients in sandy soils with expanded vermiculite.

🧪
Soil Test Kit $12-25

Test your soil pH, nitrogen, phosphorus, and potassium levels before planting.

🥬 Vegetables to Grow in San Augustine County

115 vegetables that grow well in Zone 9a with planting dates for San Augustine County.

Show all 115 vegetables with planting dates
Plant Start Indoors Direct Sow Transplant Harvest Days to Maturity
Acorn Squash Feb 5 Mar 5 Mar 12 Jun 4 – Jul 9 80–100
Amaranth Jan 22 Mar 5 Mar 12 Jun 11 – Jul 30 90–120
Artichoke Mar 19 Jul 23 – Oct 1 120–180
Arugula Feb 5 Feb 12 Mar 5 Apr 9 – Jun 11 30–50
Asparagus Mar 19 730–1095
Beets Feb 12 Apr 9 – May 7 50–70
Belgian Endive Feb 5 Feb 12 Mar 5 Jun 25 – Aug 20 110–150
Bitter Melon Jan 22 Mar 5 Mar 12 May 14 – Jun 25 60–90
Black Beans Mar 12 Jun 11 – Jul 30 90–120
Bok Choy Feb 5 Feb 12 Mar 5 Apr 16 – May 21 40–60
Broccoli Feb 5 Feb 12 Mar 5 May 7 – Jun 18 60–90
Broccoli Rabe Feb 5 Feb 12 Mar 5 Apr 16 – May 21 40–60
Brussels Sprouts Feb 5 Feb 12 Mar 5 Jun 4 – Jul 30 90–130
Butternut Squash Feb 5 Mar 5 Mar 12 Jun 11 – Jul 16 85–110
Cabbage Feb 5 Feb 12 Mar 5 May 7 – Jul 2 60–100
Calabash Jan 22 Mar 5 Mar 12 Jun 4 – Jul 30 80–120
Cardoon Mar 19 Jul 23 – Sep 3 120–150
Carrots Feb 12 Apr 16 – May 21 60–80
Cauliflower Feb 5 Feb 12 Mar 5 Apr 30 – Jul 2 55–100
Celeriac Feb 5 Feb 12 Mar 5 Jun 18 – Jul 23 100–120
Celery Feb 5 Feb 12 Mar 5 May 28 – Jul 23 80–120
Celtuce Feb 5 Feb 12 Mar 5 May 7 – Jun 18 60–90
Chard Feb 5 Feb 12 Mar 5 Apr 30 – Jun 18 50–60
Chayote Jan 22 Mar 5 Mar 12 Jul 16 – Sep 24 120–180
Chickpeas Feb 5 Feb 12 Mar 5 May 28 – Jul 9 80–110
Chicory Feb 5 Feb 12 Mar 5 May 7 – Jun 18 60–85
Chinese Cabbage Feb 5 Feb 12 Mar 5 Apr 30 – May 28 50–70
Christmas Lima Beans Jan 22 Mar 5 Mar 12 Jun 4 – Jul 9 80–100
Collard Greens Feb 5 Feb 12 Mar 5 Apr 30 – Jul 2 55–75
Corn Mar 12 May 14 – Jul 9 60–100
Cowpeas Mar 12 May 14 – Jun 25 60–90
Cress Feb 5 Feb 12 Mar 5 Mar 19 – Apr 9 14–21
Crookneck Squash Feb 5 Mar 5 Mar 12 Apr 30 – May 28 45–60
Crosne Feb 12 Jul 16 – Sep 17 150–200
Cucumber Feb 5 Mar 5 Mar 12 May 7 – Jul 2 50–70
Daikon Feb 12 Apr 9 – May 7 50–70
Delicata Squash Feb 5 Mar 5 Mar 12 Jun 4 – Jul 9 80–100
Edamame Mar 12 May 28 – Jul 9 75–100
Eggplant Jan 22 Mar 5 Mar 12 May 21 – Jul 23 65–85
Endive Feb 5 Feb 12 Mar 5 Apr 23 – May 28 45–65
Escarole Feb 5 Feb 12 Mar 5 Apr 30 – May 28 50–70
Fava Beans Feb 5 Feb 12 Mar 5 May 21 – Jul 2 75–100
Fennel Jan 22 Mar 5 Mar 12 May 14 – Jun 25 60–90
Garlic 90–240
Ginger Jan 22 Mar 5 Mar 12 Nov 12 – Jan 7 240–300
Green Beans Mar 12 May 7 – Jul 2 50–65
Horseradish Mar 19 Jul 23 – Oct 1 120–180
Hot Peppers Jan 22 Mar 5 Mar 12 May 21 – Aug 27 70–120
Hubbard Squash Feb 5 Mar 5 Mar 12 Jun 25 – Jul 30 100–120
Jicama Jan 22 Mar 5 Mar 12 Jul 16 – Sep 24 120–180
Kabocha Feb 5 Mar 5 Mar 12 Jun 11 – Jul 9 85–100
Kai Lan Feb 5 Feb 12 Mar 5 Apr 23 – May 21 45–60
Kale Feb 5 Feb 12 Mar 5 Apr 30 – Jun 25 50–70
Kidney Beans Mar 12 Jun 11 – Jul 16 85–110
Kohlrabi Feb 5 Feb 12 Mar 5 Apr 23 – May 28 45–65
Komatsuna Feb 5 Feb 12 Mar 5 Apr 9 – May 14 35–50
Leeks Feb 5 Feb 12 Mar 5 Jun 4 – Aug 20 90–150
Lentils Feb 5 Feb 12 Mar 5 May 28 – Jul 9 80–110
Lettuce Feb 5 Feb 12 Mar 5 Apr 9 – Jun 18 30–60
Lima Beans Mar 12 May 14 – Jun 25 60–90
Loofah Jan 22 Mar 5 Mar 12 Jun 25 – Aug 27 100–150
Luffa Jan 22 Mar 5 Mar 12 Jun 11 – Aug 27 90–150
Mache Feb 5 Feb 12 Mar 5 Apr 16 – May 21 40–60
Malabar Spinach Jan 22 Mar 5 Mar 12 May 7 – Jun 4 55–70
Melon Feb 5 Mar 5 Mar 12 May 21 – Jul 9 70–100
Microgreens Feb 5 Feb 12 Mar 5 Mar 12 – Apr 9 7–21
Mitsuba Feb 5 Feb 12 Feb 26 Apr 23 – Jun 18 50–70
Mizuna Feb 5 Feb 12 Mar 5 Apr 9 – May 7 30–45
Mustard Greens Feb 5 Feb 12 Mar 5 Apr 9 – Jun 11 30–50
Napa Cabbage Feb 5 Feb 12 Mar 5 Apr 30 – Jun 4 55–75
New Zealand Spinach Jan 22 Mar 5 Mar 12 May 7 – Jun 4 55–70
Okra Jan 22 Mar 5 Mar 12 May 7 – Jul 2 50–65
Onion Feb 5 Feb 12 Mar 5 Jun 4 – Jul 23 90–120
Pac Choi Feb 5 Feb 12 Mar 5 Apr 16 – May 14 40–55
Parsnip Feb 12 May 28 – Jul 9 100–130
Patty Pan Squash Feb 5 Mar 5 Mar 12 Apr 30 – May 28 45–60
Peas Feb 5 Feb 12 Mar 5 Apr 30 – Jun 25 55–70
Peppers Jan 22 Mar 5 Mar 12 May 14 – Jul 23 60–90
Pole Beans Jan 22 Mar 5 Mar 12 May 7 – Jul 2 55–70
Potatoes Jan 22 Mar 5 Mar 12 May 21 – Jul 30 70–120
Pumpkin Feb 5 Mar 5 Mar 12 Jun 11 – Jul 30 85–120
Purslane Feb 5 Feb 12 Mar 5 Apr 16 – May 21 40–60
Radicchio Feb 5 Feb 12 Mar 5 May 7 – Jun 11 60–80
Radish Feb 12 Mar 12 – Apr 2 22–35
Romanesco Feb 5 Feb 12 Mar 5 May 21 – Jul 2 75–100
Rutabaga Feb 12 May 7 – Jun 11 80–100
Salsify Feb 12 May 28 – Jul 9 100–130
Savoy Cabbage Feb 5 Feb 12 Mar 5 May 14 – Jul 9 70–110
Scallions Feb 5 Feb 12 Mar 5 Apr 30 – May 28 50–70
Scarlet Runner Beans Jan 22 Mar 5 Mar 12 May 14 – Jun 18 60–80
Shallot Feb 5 Feb 12 Mar 5 Jun 4 – Jul 23 90–120
Shiso Jan 22 Mar 12 Mar 12 May 7 – Jul 2 50–70
Snap Peas Jan 22 Mar 5 Mar 12 May 7 – Jul 2 55–70
Snow Peas Feb 5 Feb 12 Mar 5 Apr 30 – Jun 25 50–65
Soybeans Mar 12 Jun 4 – Jul 30 80–120
Spaghetti Squash Feb 5 Mar 5 Mar 12 Jun 11 – Jul 9 85–100
Spinach Feb 5 Feb 12 Mar 5 Apr 9 – Jun 11 35–50
Squash (Summer) Feb 5 Mar 5 Mar 12 Apr 30 – Jul 2 45–65
Squash (Winter) Feb 5 Mar 5 Mar 12 Jun 4 – Jul 30 80–120
Sunchoke Mar 19 Jul 9 – Sep 3 110–150
Sunflower Jan 22 Mar 5 Mar 12 May 21 – Jul 9 70–100
Sweet Corn Mar 12 May 14 – Jun 25 60–90
Sweet Potatoes Jan 22 Mar 5 Mar 12 Jun 11 – Jul 30 90–120
Tatsoi Feb 5 Feb 12 Mar 5 Apr 9 – May 14 35–50
Tomatillo Jan 22 Mar 5 Mar 12 May 14 – Jul 23 60–85
Tomatoes Jan 22 Mar 5 Mar 12 May 14 – Jul 23 60–85
Turmeric Jan 22 Mar 5 Mar 12 Nov 12 – Jan 7 240–300
Turnip Feb 12 Mar 26 – Apr 30 40–60
Watercress Feb 5 Feb 12 Mar 5 Apr 16 – May 21 40–60
Watermelon Feb 5 Mar 5 Mar 12 May 21 – Jul 9 70–100
Wax Beans Mar 12 May 7 – Jul 2 50–65
Winter Melon Jan 22 Mar 5 Mar 12 Jun 11 – Jul 30 90–120
Yam Jan 22 Mar 5 Mar 12 Sep 10 – Jan 7 180–330
Yard Long Beans Jan 22 Mar 5 Mar 12 May 7 – Jun 18 55–80
Zucchini Feb 5 Mar 5 Mar 12 Apr 30 – Jun 25 45–60

🍓 Fruits to Grow in San Augustine County

24 fruits that grow well in Zone 9a with planting dates for San Augustine County.

Show all 24 fruits with planting dates
Plant Start Indoors Direct Sow Transplant Harvest Days to Maturity
Alpine Strawberries Mar 19 Jun 18 – Oct 1 90–180
Blackberries Mar 19 365–730
Boysenberries Mar 19 365–730
Cantaloupe Mar 19 May 28 – Jul 2 70–90
Che Fruit Mar 19 1095–1825
Dragon Fruit Mar 19 365–730
Elderberries Mar 19 730–1095
Figs Mar 19 730–1825
Goji Berries Mar 19 730–1095
Grapes Mar 19 730–1095
Ground Cherry Mar 19 May 28 – Jul 23 65–80
Guava Mar 19 365–730
Honeydew Mar 19 Jun 11 – Jul 23 80–110
Kiwi Mar 19 1095–1825
Loquat Mar 19 730–1825
Mulberries Mar 19 730–1825
Passion Fruit Mar 19 365–545
Pawpaw Mar 19 1095–2555
Persimmon Mar 19 1095–2555
Pomegranate Mar 19 730–1095
Quince Mar 19 1095–1825
Raspberries Mar 19 365–730
Serviceberries Mar 19 730–1095
Strawberries Mar 19 Jun 18 – Jan 14 90–365

🌿 Herbs to Grow in San Augustine County

40 herbs that grow well in Zone 9a with planting dates for San Augustine County.

Show all 40 herbs with planting dates
Plant Start Indoors Direct Sow Transplant Harvest Days to Maturity
Anise Feb 5 Feb 12 Feb 26 May 28 – Aug 13 90–120
Basil Jan 22 Mar 12 Mar 12 May 7 – Jul 9 50–75
Bee Balm Mar 12 Jun 11 – Aug 27 90–120
Borage Feb 5 Feb 12 Feb 26 Apr 23 – Jun 11 50–60
Caraway Feb 5 Feb 12 Feb 26 365–450
Catnip Mar 12 May 14 – Jul 16 60–80
Chamomile Feb 5 Feb 12 Feb 26 Apr 30 – Jul 9 60–90
Chervil Feb 5 Feb 12 Feb 26 Apr 9 – Jun 11 40–60
Chives Mar 12 May 14 – Jul 23 60–90
Cilantro Feb 5 Feb 12 Feb 26 Apr 9 – Jun 11 40–60
Comfrey Mar 12 May 14 – Jul 23 60–90
Cumin Feb 5 Feb 12 Feb 26 Jun 11 – Aug 13 100–120
Dill Feb 5 Feb 12 Feb 26 Apr 9 – Jun 11 40–60
Echinacea Mar 12 Jul 16 – Oct 22 120–180
Epazote Jan 22 Mar 12 Mar 12 Apr 30 – Jun 25 45–60
Fennel (herb) Feb 5 Feb 12 Feb 26 Apr 30 – Jul 9 60–90
Feverfew Mar 12 Jun 11 – Aug 27 90–120
Garlic Chives Mar 12 May 14 – Jul 23 60–90
Horehound Mar 12 May 28 – Jul 23 75–90
Hyssop Mar 12 May 21 – Jul 23 70–90
Lavender Mar 12 Jun 11 – Nov 12 90–200
Lemon Balm Mar 12 May 14 – Jul 2 60–70
Lemon Thyme Mar 12 May 21 – Jul 23 70–90
Lemon Verbena Jan 22 Mar 12 Mar 12 May 14 – Jul 23 60–90
Lemongrass Jan 22 Mar 12 Mar 12 May 28 – Aug 27 75–120
Marjoram Mar 12 May 14 – Jul 23 60–90
Mint Mar 12 May 14 – Jul 23 60–90
Oregano Mar 12 May 14 – Jul 23 60–90
Parsley Feb 5 Feb 12 Feb 26 Apr 30 – Jul 2 60–80
Rosemary Mar 12 Jun 4 – Oct 22 80–180
Rue Mar 12 May 21 – Jul 23 70–90
Sage Mar 12 May 28 – Jul 23 75–90
Savory Mar 12 May 7 – Jul 2 50–70
Sorrel Feb 5 Feb 12 Feb 26 Apr 9 – Jun 11 40–60
Stevia Jan 22 Mar 12 Mar 12 May 14 – Jul 23 60–90
Tarragon Mar 12 May 14 – Jul 23 60–90
Thai Basil Jan 22 Mar 12 Mar 12 May 7 – Jul 9 50–75
Thyme Mar 12 May 21 – Jul 23 70–90
Valerian Mar 12 Jul 16 – Oct 22 120–180
Yarrow Mar 12 Jun 11 – Aug 27 90–120
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Monthly Planting Guide for San Augustine County

Gardening Guides & Resources

Helpful guides from The Ultimate Homestead to improve your garden in San Augustine County.

Frequently Asked Questions

What planting zone is San Augustine County, TX?

San Augustine County is in USDA Hardiness Zone 9a. 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 San Augustine County, TX?

Based on 31 years of NOAA weather station data, the median last spring frost in San Augustine County falls around March 5. In 8 out of 10 years, last frost lands between February 4 and April 1 — a 57-day window of variability. Use April 1 as your conservative safe-to-plant date for frost-sensitive crops.

When is the first fall frost in San Augustine County, TX?

The median first fall frost in San Augustine County arrives around November 16. In cold years it can arrive as early as October 31; in mild years as late as December 3. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.

How long is the growing season in San Augustine County?

San Augustine County has a frost-free growing season of approximately 256 days. This long season supports multiple succession plantings and warm-season crops that need extended heat, like sweet potatoes and melons. Climate records show the growing season is trending longer by about 2.55 days per decade.

What is the soil like in San Augustine County for gardening?

San Augustine County has predominantly Sandy Loam soil with a pH range of 5.4–6.6 and Well Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.

What is grown commercially in San Augustine County?

San Augustine County has commercial agriculture that includes Cotton, Cattle, Wheat, Hay, Sorghum. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.

Is San Augustine County a good location for home gardening?

San Augustine County scores 41/100 (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.

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Your San Augustine County Garden Planner — Free

A 24-page printable planner built for San Augustine 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.

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The Gardener's Encyclopedia to Companion Planting

The Gardener's Encyclopedia to Companion Planting

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The pairings that make vegetables, herbs, and flowers grow better — and the ones that quietly wreck a bed.

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Seed Saving & Storage Guide

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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.

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Composting Guide for Homesteaders

Composting Guide for Homesteaders

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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.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA GHCN-D daily station data (1994–2024) from 3 weather stations in or near San Augustine County (31 years of records). Frost dates represent 50% probability averages; local conditions vary by elevation and microclimate. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.