Frio County, TX — Planting Guide
Frio County is in USDA Zone 8b. The average last spring frost is February 26 and the first fall frost is November 26, giving you a growing season of approximately 274 days.
At an elevation of 3,892 ft, Frio County receives approximately 51 in of rainfall annually. Summer highs average 93°F with winter lows around 40°F. The predominant soil type is Loam.
Based on 28 years of NOAA climate station data, the last frost date here varies by 62 days year to year — ranging from January 18 in warm years to March 21 in cold years. The growing season is trending longer by about 10.36 days per decade. Frio County scores 46/100 (Moderate) on the Microclimate Index.
🌡️ Zone
8b (15°F to 20°F min)
❄️ Last Frost
February 26
🍂 First Frost
November 26
📅 Growing Season
274 days
⛰️ Elevation
3,892 ft
🌧️ Annual Rainfall
51 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 | 1.2 in | 3 days | — | None |
| Feb | 1.9 in | 5 days | 2.4 in | High |
| Mar | 3.6 in | 5 days | 0.7 in | Moderate |
| Apr | 4.9 in | 8 days | — | Low |
| May | 7.5 in | 11 days | — | Low |
| Jun | 9.4 in | 7 days | — | Low |
| Jul | 6.3 in | 8 days | — | Low |
| Aug | 5.2 in | 7 days | — | Low |
| Sep | 4.6 in | 5 days | — | Low |
| Oct | 3.4 in | 4 days | 0.9 in | Moderate |
| Nov | 1.6 in | 4 days | 2.7 in | High |
| Dec | 1.4 in | 3 days | — | None |
Annual total: 51 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.
Frio County Soil Profile
Soil Type
Loam
Soil pH
6.4-7.2
Drainage
Well Drained
Frost Risk Probability
Based on 28 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) | Mar 21 | Dec 12 | 266 days |
| Cautious | Mar 5 | Dec 4 | 274 days |
| Average year | Feb 26 | Nov 26 | 273 days |
| Optimistic | Feb 13 | Nov 18 | 278 days |
| Aggressive (risky) | Jan 18 | Nov 9 | 295 days |
Not very — frost dates can vary by ±62 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 10.4 days per decade). Spring is arriving earlier than it used to. Good news for gardeners.
Gardening Difficulty Score
Frio County presents some gardening challenges. Choose adapted varieties and plan around frost dates.
Local Gardening Help in Frio 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 Frio County's climate and soil.
County Extension Office
Frio 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.
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 Frio County
Finding local nurseries & garden centers in Frio County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Frio 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 Frio County TX" or "garden center Frio 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 Frio County TX" or check your extension office and local parks department. Facebook groups like "Frio 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
Sunlight & Day Length
Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.
Longest Day
13.8 hours
Summer solstice daylight
Shortest Day
10.2 hours
Winter solstice daylight
Peak Sun Hours
9.6 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 shorter days favor short-day onion varieties like Vidalia, Texas 1015, and Red Creole. Plant in fall for best results.
View detailed monthly data
| Month | Daylight Hours | Peak Sun Hours | Day Length |
|---|---|---|---|
| January | 10.3 hr | 5.6 hr | Short day |
| February | 11 hr | 6.1 hr | Short day |
| March | 11.8 hr | 7.3 hr | Short day |
| April | 12.7 hr | 7.9 hr | Neutral |
| May | 13.4 hr | 8.6 hr | Neutral |
| June | 13.8 hr | 9.1 hr | Neutral |
| July | 13.7 hr | 9.6 hr | Neutral |
| August | 13 hr | 9.1 hr | Neutral |
| September | 12.2 hr | 8.3 hr | Neutral |
| October | 11.3 hr | 7.7 hr | Short day |
| November | 10.5 hr | 6.4 hr | Short day |
| December | 10.2 hr | 5.3 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
8 months
Nearly year-round composting.
View detailed monthly data
| Month | Soil 4" Deep | Soil 8" Deep | Compost Activity | Time to Finish |
|---|---|---|---|---|
| Jan | 35°F | 41°F | ❄️ Dormant | ~36 weeks |
| Feb | 38°F | 42°F | ❄️ Dormant | ~36 weeks |
| Mar | 45°F | 45°F | 🐢 Slow | ~24 weeks |
| Apr | 52°F | 53°F | ♻️ Active | ~14 weeks |
| May | 63°F | 62°F | ♻️ Active | ~14 weeks |
| Jun | 75°F | 67°F | 🔥 Peak | ~8 weeks |
| Jul | 80°F | 76°F | 🔥 Peak | ~8 weeks |
| Aug | 80°F | 78°F | 🔥 Peak | ~8 weeks |
| Sep | 76°F | 74°F | 🔥 Peak | ~8 weeks |
| Oct | 65°F | 67°F | 🔥 Peak | ~8 weeks |
| Nov | 51°F | 58°F | ♻️ Active | ~14 weeks |
| Dec | 42°F | 48°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 Frio County
Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.
Insect Pest Pressure
High — expect multiple pest generations. Preventative measures essential.
Disease Risk
High fungal/bacterial risk. Space plants for airflow, water at soil level.
Seasonal Risk
View 6 common pests in your area
| Pest | Risk Level | Peak Months |
|---|---|---|
| Aphids | High | Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov |
| Squash vine borers | High | May, Jun, Jul |
| Stink bugs | High | Apr, May, Jun, Jul, Aug, Sep, Oct |
| Whiteflies | Moderate | 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 Frio 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 10 | Oct 1 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Cowpeas (southern peas) | Mar 8 | Sep 24 | ✓ Yes | Excellent nitrogen fixer for warm climates, edible |
| Sorghum-sudan grass | Mar 6 | Sep 24 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | Feb 1 | Sep 17 | ✓ 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 27 | Oct 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 | Sep 25 | Feb 12 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Crimson clover | Sep 16 | Feb 12 | ✓ Yes | Fixes nitrogen, attracts pollinators in spring |
| Daikon radish | Oct 8 | Feb 5 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Sep 17 | Feb 12 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Oct 24 | Feb 12 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Aug 20 | Feb 12 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Aug 28 | Feb 5 | — | 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: 17 mph Summer: 12 mph
Fall: 15 mph Winter: 17 mph
Prevailing wind: S. Windy area — plant a windbreak hedge on the S side of your garden.
Windbreak Benefit
9.4/10
Strongly recommended — a windbreak (fence, hedge, or row of tall crops like corn or sunflowers) will significantly improve garden yields.
Frost Pocket Risk
Low
Relatively flat terrain (145 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
25,418 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 1,750 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, Nov, 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 51.0 inches of rain per year
- A 1,000 sq ft roof can collect roughly 25,418 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 Frio County
Soil Type
Loam
Soil pH 6.4–7.2 · Excessively Drained drainage
Good candidate for raised beds to maximise drainage and extend the season.
Watering Needs
Drought stress: 3.5/10
Low-to-moderate drought stress. Plan to water 1–2 times per week during peak summer. (51 in. annual rainfall)
Season Tips
274-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.
Free Garden Planner
Plan your entire garden season — organize planting dates, track what you're growing, and know exactly when to start seeds, transplant, and harvest.
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 Frio County
115 vegetables that grow well in Zone 8b with planting dates for Frio County.
Show all 115 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Acorn Squash | Jan 29 | Mar 5 | Mar 12 | Jun 4 – Jul 9 | 80–100 |
| Amaranth | Jan 8 | Mar 5 | Mar 12 | Jun 11 – Jul 30 | 90–120 |
| Artichoke | — | — | Mar 12 | Jul 16 – Sep 24 | 120–180 |
| Arugula | Jan 22 | Feb 12 | Feb 26 | Apr 2 – Jun 4 | 30–50 |
| Asparagus | — | — | Mar 12 | — | 730–1095 |
| Beets | — | Feb 12 | — | Apr 9 – May 7 | 50–70 |
| Belgian Endive | Jan 22 | Feb 12 | Feb 26 | Jun 18 – Aug 13 | 110–150 |
| Bitter Melon | Jan 8 | Mar 5 | Mar 12 | May 14 – Jun 25 | 60–90 |
| Black Beans | — | Mar 5 | — | Jun 4 – Jul 23 | 90–120 |
| Bok Choy | Jan 22 | Feb 12 | Feb 26 | Apr 9 – May 14 | 40–60 |
| Broccoli | Jan 22 | Feb 12 | Feb 26 | Apr 30 – Jun 11 | 60–90 |
| Broccoli Rabe | Jan 22 | Feb 12 | Feb 26 | Apr 9 – May 14 | 40–60 |
| Brussels Sprouts | Jan 22 | Feb 12 | Feb 26 | May 28 – Jul 23 | 90–130 |
| Butternut Squash | Jan 29 | Mar 5 | Mar 12 | Jun 11 – Jul 16 | 85–110 |
| Cabbage | Jan 22 | Feb 12 | Feb 26 | Apr 30 – Jun 25 | 60–100 |
| Calabash | Jan 8 | Mar 5 | Mar 12 | Jun 4 – Jul 30 | 80–120 |
| Cardoon | — | — | Mar 12 | Jul 16 – Aug 27 | 120–150 |
| Carrots | — | Feb 12 | — | Apr 16 – May 21 | 60–80 |
| Cauliflower | Jan 22 | Feb 12 | Feb 26 | Apr 23 – Jun 25 | 55–100 |
| Celeriac | Jan 22 | Feb 12 | Feb 26 | Jun 11 – Jul 16 | 100–120 |
| Celery | Jan 22 | Feb 12 | Feb 26 | May 21 – Jul 16 | 80–120 |
| Celtuce | Jan 22 | Feb 12 | Feb 26 | Apr 30 – Jun 11 | 60–90 |
| Chard | Jan 22 | Feb 12 | Feb 26 | Apr 23 – Jun 11 | 50–60 |
| Chayote | Jan 8 | Mar 5 | Mar 12 | Jul 16 – Sep 24 | 120–180 |
| Chickpeas | Jan 22 | Feb 12 | Feb 26 | May 21 – Jul 2 | 80–110 |
| Chicory | Jan 22 | Feb 12 | Feb 26 | Apr 30 – Jun 11 | 60–85 |
| Chinese Cabbage | Jan 22 | Feb 12 | Feb 26 | Apr 23 – May 21 | 50–70 |
| Christmas Lima Beans | Jan 8 | Mar 5 | Mar 12 | Jun 4 – Jul 9 | 80–100 |
| Collard Greens | Jan 22 | Feb 12 | Feb 26 | Apr 23 – Jun 25 | 55–75 |
| Corn | — | Mar 5 | — | May 7 – Jul 2 | 60–100 |
| Cowpeas | — | Mar 5 | — | May 7 – Jun 18 | 60–90 |
| Cress | Jan 22 | Feb 12 | Feb 26 | Mar 12 – Apr 2 | 14–21 |
| Crookneck Squash | Jan 29 | Mar 5 | Mar 12 | Apr 30 – May 28 | 45–60 |
| Crosne | — | Feb 12 | — | Jul 16 – Sep 17 | 150–200 |
| Cucumber | Jan 29 | Mar 5 | Mar 12 | May 7 – Jul 2 | 50–70 |
| Daikon | — | Feb 12 | — | Apr 9 – May 7 | 50–70 |
| Delicata Squash | Jan 29 | Mar 5 | Mar 12 | Jun 4 – Jul 9 | 80–100 |
| Edamame | — | Mar 5 | — | May 21 – Jul 2 | 75–100 |
| Eggplant | Dec 25 | Mar 5 | Mar 12 | May 21 – Jul 23 | 65–85 |
| Endive | Jan 22 | Feb 12 | Feb 26 | Apr 16 – May 21 | 45–65 |
| Escarole | Jan 22 | Feb 12 | Feb 26 | Apr 23 – May 21 | 50–70 |
| Fava Beans | Jan 22 | Feb 12 | Feb 26 | May 14 – Jun 25 | 75–100 |
| Fennel | Jan 8 | Mar 5 | Mar 12 | May 14 – Jun 25 | 60–90 |
| Garlic | — | — | — | — | 90–240 |
| Ginger | Jan 8 | Mar 5 | Mar 12 | Nov 12 – Nov 26 | 240–300 |
| Green Beans | — | Mar 5 | — | Apr 30 – Jun 25 | 50–65 |
| Horseradish | — | — | Mar 12 | Jul 16 – Sep 24 | 120–180 |
| Hot Peppers | Dec 25 | Mar 5 | Mar 12 | May 21 – Aug 27 | 70–120 |
| Hubbard Squash | Jan 29 | Mar 5 | Mar 12 | Jun 25 – Jul 30 | 100–120 |
| Jicama | Jan 8 | Mar 5 | Mar 12 | Jul 16 – Sep 24 | 120–180 |
| Kabocha | Jan 29 | Mar 5 | Mar 12 | Jun 11 – Jul 9 | 85–100 |
| Kai Lan | Jan 22 | Feb 12 | Feb 26 | Apr 16 – May 14 | 45–60 |
| Kale | Jan 22 | Feb 12 | Feb 26 | Apr 23 – Jun 18 | 50–70 |
| Kidney Beans | — | Mar 5 | — | Jun 4 – Jul 9 | 85–110 |
| Kohlrabi | Jan 22 | Feb 12 | Feb 26 | Apr 16 – May 21 | 45–65 |
| Komatsuna | Jan 22 | Feb 12 | Feb 26 | Apr 2 – May 7 | 35–50 |
| Leeks | Jan 22 | Feb 12 | Feb 26 | May 28 – Aug 13 | 90–150 |
| Lentils | Jan 22 | Feb 12 | Feb 26 | May 21 – Jul 2 | 80–110 |
| Lettuce | Jan 22 | Feb 12 | Feb 26 | Apr 2 – Jun 11 | 30–60 |
| Lima Beans | — | Mar 5 | — | May 7 – Jun 18 | 60–90 |
| Loofah | Jan 8 | Mar 5 | Mar 12 | Jun 25 – Aug 27 | 100–150 |
| Luffa | Jan 8 | Mar 5 | Mar 12 | Jun 11 – Aug 27 | 90–150 |
| Mache | Jan 22 | Feb 12 | Feb 26 | Apr 9 – May 14 | 40–60 |
| Malabar Spinach | Jan 8 | Mar 5 | Mar 12 | May 7 – Jun 4 | 55–70 |
| Melon | Jan 29 | Mar 5 | Mar 12 | May 21 – Jul 9 | 70–100 |
| Microgreens | Jan 22 | Feb 12 | Feb 26 | Mar 5 – Apr 2 | 7–21 |
| Mitsuba | Jan 22 | Feb 12 | Feb 19 | Apr 16 – Jun 11 | 50–70 |
| Mizuna | Jan 22 | Feb 12 | Feb 26 | Apr 2 – Apr 30 | 30–45 |
| Mustard Greens | Jan 22 | Feb 12 | Feb 26 | Apr 2 – Jun 4 | 30–50 |
| Napa Cabbage | Jan 22 | Feb 12 | Feb 26 | Apr 23 – May 28 | 55–75 |
| New Zealand Spinach | Jan 8 | Mar 5 | Mar 12 | May 7 – Jun 4 | 55–70 |
| Okra | Jan 8 | Mar 5 | Mar 12 | May 7 – Jul 2 | 50–65 |
| Onion | Jan 22 | Feb 12 | Feb 26 | May 28 – Jul 16 | 90–120 |
| Pac Choi | Jan 22 | Feb 12 | Feb 26 | Apr 9 – May 7 | 40–55 |
| Parsnip | — | Feb 12 | — | May 28 – Jul 9 | 100–130 |
| Patty Pan Squash | Jan 29 | Mar 5 | Mar 12 | Apr 30 – May 28 | 45–60 |
| Peas | Jan 22 | Feb 12 | Feb 26 | Apr 23 – Jun 18 | 55–70 |
| Peppers | Dec 25 | Mar 5 | Mar 12 | May 14 – Jul 23 | 60–90 |
| Pole Beans | Jan 8 | Mar 5 | Mar 12 | May 7 – Jul 2 | 55–70 |
| Potatoes | Jan 8 | Mar 5 | Mar 12 | May 21 – Jul 30 | 70–120 |
| Pumpkin | Jan 29 | Mar 5 | Mar 12 | Jun 11 – Jul 30 | 85–120 |
| Purslane | Jan 22 | Feb 12 | Feb 26 | Apr 9 – May 14 | 40–60 |
| Radicchio | Jan 22 | Feb 12 | Feb 26 | Apr 30 – Jun 4 | 60–80 |
| Radish | — | Feb 12 | — | Mar 12 – Apr 2 | 22–35 |
| Rhubarb | — | — | Mar 19 | — | 365–730 |
| Romanesco | Jan 22 | Feb 12 | Feb 26 | May 14 – Jun 25 | 75–100 |
| Rutabaga | — | Feb 12 | — | May 7 – Jun 11 | 80–100 |
| Salsify | — | Feb 12 | — | May 28 – Jul 9 | 100–130 |
| Savoy Cabbage | Jan 22 | Feb 12 | Feb 26 | May 7 – Jul 2 | 70–110 |
| Scallions | Jan 22 | Feb 12 | Feb 26 | Apr 23 – May 21 | 50–70 |
| Scarlet Runner Beans | Jan 8 | Mar 5 | Mar 12 | May 14 – Jun 18 | 60–80 |
| Shallot | Jan 22 | Feb 12 | Feb 26 | May 28 – Jul 16 | 90–120 |
| Shiso | Jan 8 | Mar 5 | Mar 12 | May 7 – Jul 2 | 50–70 |
| Snap Peas | Jan 8 | Mar 5 | Mar 12 | May 7 – Jul 2 | 55–70 |
| Snow Peas | Jan 22 | Feb 12 | Feb 26 | Apr 23 – Jun 18 | 50–65 |
| Soybeans | — | Mar 5 | — | May 28 – Jul 23 | 80–120 |
| Spaghetti Squash | Jan 29 | Mar 5 | Mar 12 | Jun 11 – Jul 9 | 85–100 |
| Spinach | Jan 22 | Feb 12 | Feb 26 | Apr 2 – Jun 4 | 35–50 |
| Squash (Summer) | Jan 29 | Mar 5 | Mar 12 | Apr 30 – Jul 2 | 45–65 |
| Squash (Winter) | Jan 29 | Mar 5 | Mar 12 | Jun 4 – Jul 30 | 80–120 |
| Sunchoke | — | — | Mar 12 | Jul 2 – Aug 27 | 110–150 |
| Sunflower | Jan 8 | Mar 5 | Mar 12 | May 21 – Jul 9 | 70–100 |
| Sweet Corn | — | Mar 5 | — | May 7 – Jun 18 | 60–90 |
| Sweet Potatoes | Jan 8 | Mar 5 | Mar 12 | Jun 11 – Jul 30 | 90–120 |
| Tatsoi | Jan 22 | Feb 12 | Feb 26 | Apr 2 – May 7 | 35–50 |
| Tomatillo | Jan 8 | Mar 5 | Mar 12 | May 14 – Jul 23 | 60–85 |
| Tomatoes | Jan 8 | Mar 5 | Mar 12 | May 14 – Jul 23 | 60–85 |
| Turmeric | Jan 8 | Mar 5 | Mar 12 | Nov 12 – Nov 26 | 240–300 |
| Turnip | — | Feb 12 | — | Mar 26 – Apr 30 | 40–60 |
| Watercress | Jan 22 | Feb 12 | Feb 26 | Apr 9 – May 14 | 40–60 |
| Watermelon | Jan 29 | Mar 5 | Mar 12 | May 21 – Jul 9 | 70–100 |
| Wax Beans | — | Mar 5 | — | Apr 30 – Jun 25 | 50–65 |
| Winter Melon | Jan 8 | Mar 5 | Mar 12 | Jun 11 – Jul 30 | 90–120 |
| Yard Long Beans | Jan 8 | Mar 5 | Mar 12 | May 7 – Jun 18 | 55–80 |
| Zucchini | Jan 29 | Mar 5 | Mar 12 | Apr 30 – Jun 25 | 45–60 |
🍓 Fruits to Grow in Frio County
27 fruits that grow well in Zone 8b with planting dates for Frio County.
Show all 27 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Alpine Strawberries | — | — | Mar 19 | Jun 18 – Oct 1 | 90–180 |
| Aronia | — | — | Mar 19 | — | 730–1095 |
| Blackberries | — | — | Mar 19 | — | 365–730 |
| Blueberries | — | — | Mar 19 | — | 730–1095 |
| Boysenberries | — | — | Mar 19 | — | 365–730 |
| Cantaloupe | — | — | Mar 19 | May 28 – Jul 2 | 70–90 |
| Che Fruit | — | — | Mar 19 | — | 1095–1825 |
| Elderberries | — | — | Mar 19 | — | 730–1095 |
| Figs | — | — | Mar 19 | — | 730–1825 |
| Goji Berries | — | — | Mar 19 | — | 730–1095 |
| Gooseberries | — | — | Mar 19 | — | 730–1095 |
| Grapes | — | — | Mar 19 | — | 730–1095 |
| Ground Cherry | — | — | Mar 19 | May 28 – Jul 23 | 65–80 |
| Hardy Kiwi | — | — | Mar 19 | — | 1095–1825 |
| Honeydew | — | — | Mar 19 | Jun 11 – Jul 23 | 80–110 |
| Jostaberry | — | — | Mar 19 | — | 730–1095 |
| Kiwi | — | — | Mar 19 | — | 1095–1825 |
| Loquat | — | — | Mar 19 | — | 730–1825 |
| Medlar | — | — | Mar 19 | — | 1095–1825 |
| Mulberries | — | — | Mar 19 | — | 730–1825 |
| 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 – Dec 3 | 90–365 |
🌿 Herbs to Grow in Frio County
42 herbs that grow well in Zone 8b with planting dates for Frio County.
Show all 42 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Angelica | Jan 22 | Feb 12 | Feb 19 | — | 365–730 |
| Anise | Jan 22 | Feb 12 | Feb 19 | May 21 – Aug 6 | 90–120 |
| Basil | Jan 8 | Mar 5 | Mar 12 | May 7 – Jul 9 | 50–75 |
| Bee Balm | — | — | Mar 5 | Jun 4 – Aug 20 | 90–120 |
| Borage | Jan 22 | Feb 12 | Feb 19 | Apr 16 – Jun 4 | 50–60 |
| Caraway | Jan 22 | Feb 12 | Feb 19 | — | 365–450 |
| Catnip | — | — | Mar 5 | May 7 – Jul 9 | 60–80 |
| Chamomile | Jan 22 | Feb 12 | Feb 19 | Apr 23 – Jul 2 | 60–90 |
| Chervil | Jan 22 | Feb 12 | Feb 19 | Apr 2 – Jun 4 | 40–60 |
| Chives | — | — | Mar 5 | May 7 – Jul 16 | 60–90 |
| Cilantro | Jan 22 | Feb 12 | Feb 19 | Apr 2 – Jun 4 | 40–60 |
| Comfrey | — | — | Mar 5 | May 7 – Jul 16 | 60–90 |
| Cumin | Jan 22 | Feb 12 | Feb 19 | Jun 4 – Aug 6 | 100–120 |
| Dill | Jan 22 | Feb 12 | Feb 19 | Apr 2 – Jun 4 | 40–60 |
| Echinacea | — | — | Mar 5 | Jul 9 – Oct 15 | 120–180 |
| Epazote | Jan 8 | Mar 5 | Mar 12 | Apr 30 – Jun 25 | 45–60 |
| Fennel (herb) | Jan 22 | Feb 12 | Feb 19 | Apr 23 – Jul 2 | 60–90 |
| Feverfew | — | — | Mar 5 | Jun 4 – Aug 20 | 90–120 |
| Garlic Chives | — | — | Mar 5 | May 7 – Jul 16 | 60–90 |
| Horehound | — | — | Mar 5 | May 21 – Jul 16 | 75–90 |
| Hyssop | — | — | Mar 5 | May 14 – Jul 16 | 70–90 |
| Lavender | — | — | Mar 5 | Jun 4 – Nov 5 | 90–200 |
| Lemon Balm | — | — | Mar 5 | May 7 – Jun 25 | 60–70 |
| Lemon Thyme | — | — | Mar 5 | May 14 – Jul 16 | 70–90 |
| Lemon Verbena | Jan 8 | Mar 5 | Mar 12 | May 14 – Jul 23 | 60–90 |
| Lemongrass | Jan 8 | Mar 5 | Mar 12 | May 28 – Aug 27 | 75–120 |
| Lovage | — | — | Mar 5 | May 14 – Jul 16 | 70–90 |
| Marjoram | — | — | Mar 5 | May 7 – Jul 16 | 60–90 |
| Mint | — | — | Mar 5 | May 7 – Jul 16 | 60–90 |
| Oregano | — | — | Mar 5 | May 7 – Jul 16 | 60–90 |
| Parsley | Jan 22 | Feb 12 | Feb 19 | Apr 23 – Jun 25 | 60–80 |
| Rosemary | — | — | Mar 5 | May 28 – Oct 15 | 80–180 |
| Rue | — | — | Mar 5 | May 14 – Jul 16 | 70–90 |
| Sage | — | — | Mar 5 | May 21 – Jul 16 | 75–90 |
| Savory | — | — | Mar 5 | Apr 30 – Jun 25 | 50–70 |
| Sorrel | Jan 22 | Feb 12 | Feb 19 | Apr 2 – Jun 4 | 40–60 |
| Stevia | Jan 8 | Mar 5 | Mar 12 | May 14 – Jul 23 | 60–90 |
| Tarragon | — | — | Mar 5 | May 7 – Jul 16 | 60–90 |
| Thai Basil | Jan 8 | Mar 5 | Mar 12 | May 7 – Jul 9 | 50–75 |
| Thyme | — | — | Mar 5 | May 14 – Jul 16 | 70–90 |
| Valerian | — | — | Mar 5 | Jul 9 – Oct 15 | 120–180 |
| Yarrow | — | — | Mar 5 | Jun 4 – Aug 20 | 90–120 |
Monthly Planting Guide for Frio County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Frio County.
Frequently Asked Questions
What planting zone is Frio County, TX?
Frio County is in USDA Hardiness Zone 8b. 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 Frio County, TX?
Based on 28 years of NOAA weather station data, the median last spring frost in Frio County falls around February 26. In 8 out of 10 years, last frost lands between January 18 and March 21 — a 62-day window of variability. Use March 21 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in Frio County, TX?
The median first fall frost in Frio County arrives around November 26. In cold years it can arrive as early as November 9; in mild years as late as December 12. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Frio County?
Frio County has a frost-free growing season of approximately 274 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 10.36 days per decade.
What is the soil like in Frio County for gardening?
Frio County has predominantly Loam soil with a pH range of 6.4–7.2 and Excessively Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.
What is grown commercially in Frio County?
Frio County has commercial agriculture that includes Cotton, Cattle, Sorghum, Wheat, Corn. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is Frio County a good location for home gardening?
Frio 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.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Frio County gardeners in Zone 8b organize planting dates, track what's growing, and never miss a planting window.
Get Your Free Garden Planner →Free download. Plan your entire garden season in minutes.
