Guadalupe County, TX — Planting Guide
Guadalupe County is in USDA Zone 8b. The average last spring frost is March 7 and the first fall frost is November 21, giving you a growing season of approximately 259 days.
At an elevation of 3,679 ft, Guadalupe County receives approximately 63 in of rainfall annually. Summer highs average 93°F with winter lows around 39°F. The predominant soil type is Clay.
Based on 31 years of NOAA climate station data, the last frost date here varies by 55 days year to year — ranging from February 10 in warm years to April 6 in cold years. The growing season is trending longer by about 6.72 days per decade. Guadalupe County scores 30/100 (Challenging) on the Microclimate Index.
🌡️ Zone
8b (15°F to 20°F min)
❄️ Last Frost
March 7
🍂 First Frost
November 21
📅 Growing Season
259 days
⛰️ Elevation
3,679 ft
🌧️ Annual Rainfall
63 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 | 1.6 in | 4 days | — | None |
| Feb | 2.1 in | 4 days | 2.2 in | High |
| Mar | 4.4 in | 6 days | — | Low |
| Apr | 6.5 in | 7 days | — | Low |
| May | 9.5 in | 9 days | — | Low |
| Jun | 9.3 in | 9 days | — | Low |
| Jul | 8 in | 7 days | — | Low |
| Aug | 7.1 in | 7 days | — | Low |
| Sep | 6.4 in | 5 days | — | Low |
| Oct | 4.5 in | 4 days | — | Low |
| Nov | 1.9 in | 4 days | 2.4 in | High |
| Dec | 1.6 in | 4 days | — | None |
Annual total: 62.9 in. Water needs vary by crop — tomatoes need ~1.2"/week while herbs like rosemary need only 0.3"/week. Check individual plant pages for crop-specific water budgets that factor in your county's rainfall and soil drainage.
Guadalupe County Soil Profile
Soil Type
Clay
Soil pH
6.9-8.2
Drainage
Well Drained
Frost Risk Probability
Based on 31 years of NOAA weather station data from 3 stations
Beginners: Plant frost-sensitive crops (tomatoes, peppers, squash) after the "Safe" date on the left. Harvest or cover them before the "Protect by" date on the right. Hardy crops (lettuce, peas, kale) can go in the yellow transition zones.
How to read this table: "Conservative" means you're safe from frost 9 out of 10 years — best for beginners and frost-sensitive crops. "Average year" is the typical date. "Aggressive" means only 1 in 10 years is that warm — experienced gardeners with frost protection can try these dates.
| Planting Strategy | Last Spring Frost | First Fall Frost | Frost-Free Days |
|---|---|---|---|
| Conservative (safest) | Apr 6 | Dec 11 | 249 days |
| Cautious | Mar 19 | Dec 1 | 257 days |
| Average year | Mar 7 | Nov 21 | 259 days |
| Optimistic | Feb 27 | Nov 13 | 259 days |
| Aggressive (risky) | Feb 10 | Oct 31 | 263 days |
Not very — frost dates can vary by ±55 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 6.7 days per decade). Spring is arriving earlier than it used to. Good news for gardeners.
Gardening Difficulty Score
Guadalupe County has challenging growing conditions. Season extension and careful variety selection are essential.
Local Gardening Help in Guadalupe 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 Guadalupe County's climate and soil.
County Extension Office
Guadalupe 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 Guadalupe County
Finding local nurseries & garden centers in Guadalupe County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Guadalupe 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 Guadalupe County TX" or "garden center Guadalupe 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 Guadalupe County TX" or check your extension office and local parks department. Facebook groups like "Guadalupe 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
13.9 hours
Summer solstice daylight
Shortest Day
10.1 hours
Winter solstice daylight
Peak Sun Hours
9.7 hr/day peak (summer)
Peak sun hours (green dashed line below) account for cloud cover — this is the usable direct sunlight your garden actually receives. Most vegetables need 6+ peak sun hours.
Onion tip: Your 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 | 6.6 hr | Short day |
| March | 11.8 hr | 7 hr | Short day |
| April | 12.7 hr | 7.6 hr | Neutral |
| May | 13.5 hr | 8.5 hr | Neutral |
| June | 13.9 hr | 9.5 hr | Neutral |
| July | 13.7 hr | 9.7 hr | Neutral |
| August | 13.1 hr | 8.8 hr | Neutral |
| September | 12.2 hr | 8.2 hr | Neutral |
| October | 11.3 hr | 7.1 hr | Short day |
| November | 10.5 hr | 5.8 hr | Short day |
| December | 10.1 hr | 5.7 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 | 36°F | 44°F | ❄️ Dormant | ~36 weeks |
| Feb | 37°F | 42°F | ❄️ Dormant | ~36 weeks |
| Mar | 45°F | 47°F | 🐢 Slow | ~24 weeks |
| Apr | 53°F | 53°F | ♻️ Active | ~14 weeks |
| May | 63°F | 61°F | ♻️ Active | ~14 weeks |
| Jun | 72°F | 70°F | 🔥 Peak | ~8 weeks |
| Jul | 81°F | 76°F | 🔥 Peak | ~8 weeks |
| Aug | 81°F | 79°F | 🔥 Peak | ~8 weeks |
| Sep | 78°F | 75°F | 🔥 Peak | ~8 weeks |
| Oct | 66°F | 66°F | 🔥 Peak | ~8 weeks |
| Nov | 51°F | 59°F | ♻️ Active | ~14 weeks |
| Dec | 41°F | 50°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 Guadalupe 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 | 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 | Low | 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 Guadalupe 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 12 | Sep 26 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Cowpeas (southern peas) | Mar 12 | Sep 19 | ✓ Yes | Excellent nitrogen fixer for warm climates, edible |
| Sorghum-sudan grass | Mar 10 | Sep 19 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | Feb 10 | Sep 19 | ✓ 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 18 | Oct 31 | — | 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 22 | Feb 21 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Crimson clover | Sep 18 | Feb 14 | ✓ Yes | Fixes nitrogen, attracts pollinators in spring |
| Daikon radish | Oct 10 | Feb 14 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Aug 27 | Feb 21 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Oct 27 | Feb 14 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Aug 21 | Feb 21 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Aug 23 | Feb 21 | — | 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: 18 mph Summer: 14 mph
Fall: 14 mph Winter: 16 mph
Prevailing wind: S. Windy area — plant a windbreak hedge on the S side of your garden.
Windbreak Benefit
9.2/10
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 (251 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
31,349 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, 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 62.9 inches of rain per year
- A 1,000 sq ft roof can collect roughly 31,349 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 Guadalupe County
Soil Type
Clay
Soil pH 6.9–8.2 · Moderately Well Drained drainage
Raised beds strongly recommended here — native soil drainage or texture limits in-ground options.
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
259-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
Cedar raised bed kit — ideal for poor soil, clay, or small-space gardening.
Improve drainage and aeration in heavy clay soils with horticultural perlite.
Premium blend of topsoil, compost, and perlite formulated for raised beds.
🥬 Vegetables to Grow in Guadalupe County
115 vegetables that grow well in Zone 8b with planting dates for Guadalupe County.
Show all 115 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Acorn Squash | Feb 7 | Mar 14 | Mar 21 | Jun 13 – Jul 18 | 80–100 |
| Amaranth | Jan 17 | Mar 14 | Mar 21 | Jun 20 – Aug 8 | 90–120 |
| Artichoke | — | — | Mar 21 | Jul 25 – Oct 3 | 120–180 |
| Arugula | Jan 31 | Feb 21 | Mar 7 | Apr 11 – Jun 13 | 30–50 |
| Asparagus | — | — | Mar 21 | — | 730–1095 |
| Beets | — | Feb 21 | — | Apr 18 – May 16 | 50–70 |
| Belgian Endive | Jan 31 | Feb 21 | Mar 7 | Jun 27 – Aug 22 | 110–150 |
| Bitter Melon | Jan 17 | Mar 14 | Mar 21 | May 23 – Jul 4 | 60–90 |
| Black Beans | — | Mar 14 | — | Jun 13 – Aug 1 | 90–120 |
| Bok Choy | Jan 31 | Feb 21 | Mar 7 | Apr 18 – May 23 | 40–60 |
| Broccoli | Jan 31 | Feb 21 | Mar 7 | May 9 – Jun 20 | 60–90 |
| Broccoli Rabe | Jan 31 | Feb 21 | Mar 7 | Apr 18 – May 23 | 40–60 |
| Brussels Sprouts | Jan 31 | Feb 21 | Mar 7 | Jun 6 – Aug 1 | 90–130 |
| Butternut Squash | Feb 7 | Mar 14 | Mar 21 | Jun 20 – Jul 25 | 85–110 |
| Cabbage | Jan 31 | Feb 21 | Mar 7 | May 9 – Jul 4 | 60–100 |
| Calabash | Jan 17 | Mar 14 | Mar 21 | Jun 13 – Aug 8 | 80–120 |
| Cardoon | — | — | Mar 21 | Jul 25 – Sep 5 | 120–150 |
| Carrots | — | Feb 21 | — | Apr 25 – May 30 | 60–80 |
| Cauliflower | Jan 31 | Feb 21 | Mar 7 | May 2 – Jul 4 | 55–100 |
| Celeriac | Jan 31 | Feb 21 | Mar 7 | Jun 20 – Jul 25 | 100–120 |
| Celery | Jan 31 | Feb 21 | Mar 7 | May 30 – Jul 25 | 80–120 |
| Celtuce | Jan 31 | Feb 21 | Mar 7 | May 9 – Jun 20 | 60–90 |
| Chard | Jan 31 | Feb 21 | Mar 7 | May 2 – Jun 20 | 50–60 |
| Chayote | Jan 17 | Mar 14 | Mar 21 | Jul 25 – Oct 3 | 120–180 |
| Chickpeas | Jan 31 | Feb 21 | Mar 7 | May 30 – Jul 11 | 80–110 |
| Chicory | Jan 31 | Feb 21 | Mar 7 | May 9 – Jun 20 | 60–85 |
| Chinese Cabbage | Jan 31 | Feb 21 | Mar 7 | May 2 – May 30 | 50–70 |
| Christmas Lima Beans | Jan 17 | Mar 14 | Mar 21 | Jun 13 – Jul 18 | 80–100 |
| Collard Greens | Jan 31 | Feb 21 | Mar 7 | May 2 – Jul 4 | 55–75 |
| Corn | — | Mar 14 | — | May 16 – Jul 11 | 60–100 |
| Cowpeas | — | Mar 14 | — | May 16 – Jun 27 | 60–90 |
| Cress | Jan 31 | Feb 21 | Mar 7 | Mar 21 – Apr 11 | 14–21 |
| Crookneck Squash | Feb 7 | Mar 14 | Mar 21 | May 9 – Jun 6 | 45–60 |
| Crosne | — | Feb 21 | — | Jul 25 – Sep 26 | 150–200 |
| Cucumber | Feb 7 | Mar 14 | Mar 21 | May 16 – Jul 11 | 50–70 |
| Daikon | — | Feb 21 | — | Apr 18 – May 16 | 50–70 |
| Delicata Squash | Feb 7 | Mar 14 | Mar 21 | Jun 13 – Jul 18 | 80–100 |
| Edamame | — | Mar 14 | — | May 30 – Jul 11 | 75–100 |
| Eggplant | Jan 3 | Mar 14 | Mar 21 | May 30 – Aug 1 | 65–85 |
| Endive | Jan 31 | Feb 21 | Mar 7 | Apr 25 – May 30 | 45–65 |
| Escarole | Jan 31 | Feb 21 | Mar 7 | May 2 – May 30 | 50–70 |
| Fava Beans | Jan 31 | Feb 21 | Mar 7 | May 23 – Jul 4 | 75–100 |
| Fennel | Jan 17 | Mar 14 | Mar 21 | May 23 – Jul 4 | 60–90 |
| Garlic | — | — | — | — | 90–240 |
| Ginger | Jan 17 | Mar 14 | Mar 21 | Nov 21 – Dec 5 | 240–300 |
| Green Beans | — | Mar 14 | — | May 9 – Jul 4 | 50–65 |
| Horseradish | — | — | Mar 21 | Jul 25 – Oct 3 | 120–180 |
| Hot Peppers | Jan 3 | Mar 14 | Mar 21 | May 30 – Sep 5 | 70–120 |
| Hubbard Squash | Feb 7 | Mar 14 | Mar 21 | Jul 4 – Aug 8 | 100–120 |
| Jicama | Jan 17 | Mar 14 | Mar 21 | Jul 25 – Oct 3 | 120–180 |
| Kabocha | Feb 7 | Mar 14 | Mar 21 | Jun 20 – Jul 18 | 85–100 |
| Kai Lan | Jan 31 | Feb 21 | Mar 7 | Apr 25 – May 23 | 45–60 |
| Kale | Jan 31 | Feb 21 | Mar 7 | May 2 – Jun 27 | 50–70 |
| Kidney Beans | — | Mar 14 | — | Jun 13 – Jul 18 | 85–110 |
| Kohlrabi | Jan 31 | Feb 21 | Mar 7 | Apr 25 – May 30 | 45–65 |
| Komatsuna | Jan 31 | Feb 21 | Mar 7 | Apr 11 – May 16 | 35–50 |
| Leeks | Jan 31 | Feb 21 | Mar 7 | Jun 6 – Aug 22 | 90–150 |
| Lentils | Jan 31 | Feb 21 | Mar 7 | May 30 – Jul 11 | 80–110 |
| Lettuce | Jan 31 | Feb 21 | Mar 7 | Apr 11 – Jun 20 | 30–60 |
| Lima Beans | — | Mar 14 | — | May 16 – Jun 27 | 60–90 |
| Loofah | Jan 17 | Mar 14 | Mar 21 | Jul 4 – Sep 5 | 100–150 |
| Luffa | Jan 17 | Mar 14 | Mar 21 | Jun 20 – Sep 5 | 90–150 |
| Mache | Jan 31 | Feb 21 | Mar 7 | Apr 18 – May 23 | 40–60 |
| Malabar Spinach | Jan 17 | Mar 14 | Mar 21 | May 16 – Jun 13 | 55–70 |
| Melon | Feb 7 | Mar 14 | Mar 21 | May 30 – Jul 18 | 70–100 |
| Microgreens | Jan 31 | Feb 21 | Mar 7 | Mar 14 – Apr 11 | 7–21 |
| Mitsuba | Jan 31 | Feb 21 | Feb 28 | Apr 25 – Jun 20 | 50–70 |
| Mizuna | Jan 31 | Feb 21 | Mar 7 | Apr 11 – May 9 | 30–45 |
| Mustard Greens | Jan 31 | Feb 21 | Mar 7 | Apr 11 – Jun 13 | 30–50 |
| Napa Cabbage | Jan 31 | Feb 21 | Mar 7 | May 2 – Jun 6 | 55–75 |
| New Zealand Spinach | Jan 17 | Mar 14 | Mar 21 | May 16 – Jun 13 | 55–70 |
| Okra | Jan 17 | Mar 14 | Mar 21 | May 16 – Jul 11 | 50–65 |
| Onion | Jan 31 | Feb 21 | Mar 7 | Jun 6 – Jul 25 | 90–120 |
| Pac Choi | Jan 31 | Feb 21 | Mar 7 | Apr 18 – May 16 | 40–55 |
| Parsnip | — | Feb 21 | — | Jun 6 – Jul 18 | 100–130 |
| Patty Pan Squash | Feb 7 | Mar 14 | Mar 21 | May 9 – Jun 6 | 45–60 |
| Peas | Jan 31 | Feb 21 | Mar 7 | May 2 – Jun 27 | 55–70 |
| Peppers | Jan 3 | Mar 14 | Mar 21 | May 23 – Aug 1 | 60–90 |
| Pole Beans | Jan 17 | Mar 14 | Mar 21 | May 16 – Jul 11 | 55–70 |
| Potatoes | Jan 17 | Mar 14 | Mar 21 | May 30 – Aug 8 | 70–120 |
| Pumpkin | Feb 7 | Mar 14 | Mar 21 | Jun 20 – Aug 8 | 85–120 |
| Purslane | Jan 31 | Feb 21 | Mar 7 | Apr 18 – May 23 | 40–60 |
| Radicchio | Jan 31 | Feb 21 | Mar 7 | May 9 – Jun 13 | 60–80 |
| Radish | — | Feb 21 | — | Mar 21 – Apr 11 | 22–35 |
| Rhubarb | — | — | Mar 28 | — | 365–730 |
| Romanesco | Jan 31 | Feb 21 | Mar 7 | May 23 – Jul 4 | 75–100 |
| Rutabaga | — | Feb 21 | — | May 16 – Jun 20 | 80–100 |
| Salsify | — | Feb 21 | — | Jun 6 – Jul 18 | 100–130 |
| Savoy Cabbage | Jan 31 | Feb 21 | Mar 7 | May 16 – Jul 11 | 70–110 |
| Scallions | Jan 31 | Feb 21 | Mar 7 | May 2 – May 30 | 50–70 |
| Scarlet Runner Beans | Jan 17 | Mar 14 | Mar 21 | May 23 – Jun 27 | 60–80 |
| Shallot | Jan 31 | Feb 21 | Mar 7 | Jun 6 – Jul 25 | 90–120 |
| Shiso | Jan 17 | Mar 14 | Mar 21 | May 16 – Jul 11 | 50–70 |
| Snap Peas | Jan 17 | Mar 14 | Mar 21 | May 16 – Jul 11 | 55–70 |
| Snow Peas | Jan 31 | Feb 21 | Mar 7 | May 2 – Jun 27 | 50–65 |
| Soybeans | — | Mar 14 | — | Jun 6 – Aug 1 | 80–120 |
| Spaghetti Squash | Feb 7 | Mar 14 | Mar 21 | Jun 20 – Jul 18 | 85–100 |
| Spinach | Jan 31 | Feb 21 | Mar 7 | Apr 11 – Jun 13 | 35–50 |
| Squash (Summer) | Feb 7 | Mar 14 | Mar 21 | May 9 – Jul 11 | 45–65 |
| Squash (Winter) | Feb 7 | Mar 14 | Mar 21 | Jun 13 – Aug 8 | 80–120 |
| Sunchoke | — | — | Mar 21 | Jul 11 – Sep 5 | 110–150 |
| Sunflower | Jan 17 | Mar 14 | Mar 21 | May 30 – Jul 18 | 70–100 |
| Sweet Corn | — | Mar 14 | — | May 16 – Jun 27 | 60–90 |
| Sweet Potatoes | Jan 17 | Mar 14 | Mar 21 | Jun 20 – Aug 8 | 90–120 |
| Tatsoi | Jan 31 | Feb 21 | Mar 7 | Apr 11 – May 16 | 35–50 |
| Tomatillo | Jan 17 | Mar 14 | Mar 21 | May 23 – Aug 1 | 60–85 |
| Tomatoes | Jan 17 | Mar 14 | Mar 21 | May 23 – Aug 1 | 60–85 |
| Turmeric | Jan 17 | Mar 14 | Mar 21 | Nov 21 – Dec 5 | 240–300 |
| Turnip | — | Feb 21 | — | Apr 4 – May 9 | 40–60 |
| Watercress | Jan 31 | Feb 21 | Mar 7 | Apr 18 – May 23 | 40–60 |
| Watermelon | Feb 7 | Mar 14 | Mar 21 | May 30 – Jul 18 | 70–100 |
| Wax Beans | — | Mar 14 | — | May 9 – Jul 4 | 50–65 |
| Winter Melon | Jan 17 | Mar 14 | Mar 21 | Jun 20 – Aug 8 | 90–120 |
| Yard Long Beans | Jan 17 | Mar 14 | Mar 21 | May 16 – Jun 27 | 55–80 |
| Zucchini | Feb 7 | Mar 14 | Mar 21 | May 9 – Jul 4 | 45–60 |
🍓 Fruits to Grow in Guadalupe County
27 fruits that grow well in Zone 8b with planting dates for Guadalupe County.
Show all 27 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Alpine Strawberries | — | — | Mar 28 | Jun 27 – Oct 10 | 90–180 |
| Aronia | — | — | Mar 28 | — | 730–1095 |
| Blackberries | — | — | Mar 28 | — | 365–730 |
| Blueberries | — | — | Mar 28 | — | 730–1095 |
| Boysenberries | — | — | Mar 28 | — | 365–730 |
| Cantaloupe | — | — | Mar 28 | Jun 6 – Jul 11 | 70–90 |
| Che Fruit | — | — | Mar 28 | — | 1095–1825 |
| Elderberries | — | — | Mar 28 | — | 730–1095 |
| Figs | — | — | Mar 28 | — | 730–1825 |
| Goji Berries | — | — | Mar 28 | — | 730–1095 |
| Gooseberries | — | — | Mar 28 | — | 730–1095 |
| Grapes | — | — | Mar 28 | — | 730–1095 |
| Ground Cherry | — | — | Mar 28 | Jun 6 – Aug 1 | 65–80 |
| Hardy Kiwi | — | — | Mar 28 | — | 1095–1825 |
| Honeydew | — | — | Mar 28 | Jun 20 – Aug 1 | 80–110 |
| Jostaberry | — | — | Mar 28 | — | 730–1095 |
| Kiwi | — | — | Mar 28 | — | 1095–1825 |
| Loquat | — | — | Mar 28 | — | 730–1825 |
| Medlar | — | — | Mar 28 | — | 1095–1825 |
| Mulberries | — | — | Mar 28 | — | 730–1825 |
| Pawpaw | — | — | Mar 28 | — | 1095–2555 |
| Persimmon | — | — | Mar 28 | — | 1095–2555 |
| Pomegranate | — | — | Mar 28 | — | 730–1095 |
| Quince | — | — | Mar 28 | — | 1095–1825 |
| Raspberries | — | — | Mar 28 | — | 365–730 |
| Serviceberries | — | — | Mar 28 | — | 730–1095 |
| Strawberries | — | — | Mar 28 | Jun 27 – Dec 12 | 90–365 |
🌿 Herbs to Grow in Guadalupe County
42 herbs that grow well in Zone 8b with planting dates for Guadalupe County.
Show all 42 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Angelica | Jan 31 | Feb 21 | Feb 28 | — | 365–730 |
| Anise | Jan 31 | Feb 21 | Feb 28 | May 30 – Aug 15 | 90–120 |
| Basil | Jan 17 | Mar 14 | Mar 21 | May 16 – Jul 18 | 50–75 |
| Bee Balm | — | — | Mar 14 | Jun 13 – Aug 29 | 90–120 |
| Borage | Jan 31 | Feb 21 | Feb 28 | Apr 25 – Jun 13 | 50–60 |
| Caraway | Jan 31 | Feb 21 | Feb 28 | — | 365–450 |
| Catnip | — | — | Mar 14 | May 16 – Jul 18 | 60–80 |
| Chamomile | Jan 31 | Feb 21 | Feb 28 | May 2 – Jul 11 | 60–90 |
| Chervil | Jan 31 | Feb 21 | Feb 28 | Apr 11 – Jun 13 | 40–60 |
| Chives | — | — | Mar 14 | May 16 – Jul 25 | 60–90 |
| Cilantro | Jan 31 | Feb 21 | Feb 28 | Apr 11 – Jun 13 | 40–60 |
| Comfrey | — | — | Mar 14 | May 16 – Jul 25 | 60–90 |
| Cumin | Jan 31 | Feb 21 | Feb 28 | Jun 13 – Aug 15 | 100–120 |
| Dill | Jan 31 | Feb 21 | Feb 28 | Apr 11 – Jun 13 | 40–60 |
| Echinacea | — | — | Mar 14 | Jul 18 – Oct 24 | 120–180 |
| Epazote | Jan 17 | Mar 14 | Mar 21 | May 9 – Jul 4 | 45–60 |
| Fennel (herb) | Jan 31 | Feb 21 | Feb 28 | May 2 – Jul 11 | 60–90 |
| Feverfew | — | — | Mar 14 | Jun 13 – Aug 29 | 90–120 |
| Garlic Chives | — | — | Mar 14 | May 16 – Jul 25 | 60–90 |
| Horehound | — | — | Mar 14 | May 30 – Jul 25 | 75–90 |
| Hyssop | — | — | Mar 14 | May 23 – Jul 25 | 70–90 |
| Lavender | — | — | Mar 14 | Jun 13 – Nov 14 | 90–200 |
| Lemon Balm | — | — | Mar 14 | May 16 – Jul 4 | 60–70 |
| Lemon Thyme | — | — | Mar 14 | May 23 – Jul 25 | 70–90 |
| Lemon Verbena | Jan 17 | Mar 14 | Mar 21 | May 23 – Aug 1 | 60–90 |
| Lemongrass | Jan 17 | Mar 14 | Mar 21 | Jun 6 – Sep 5 | 75–120 |
| Lovage | — | — | Mar 14 | May 23 – Jul 25 | 70–90 |
| Marjoram | — | — | Mar 14 | May 16 – Jul 25 | 60–90 |
| Mint | — | — | Mar 14 | May 16 – Jul 25 | 60–90 |
| Oregano | — | — | Mar 14 | May 16 – Jul 25 | 60–90 |
| Parsley | Jan 31 | Feb 21 | Feb 28 | May 2 – Jul 4 | 60–80 |
| Rosemary | — | — | Mar 14 | Jun 6 – Oct 24 | 80–180 |
| Rue | — | — | Mar 14 | May 23 – Jul 25 | 70–90 |
| Sage | — | — | Mar 14 | May 30 – Jul 25 | 75–90 |
| Savory | — | — | Mar 14 | May 9 – Jul 4 | 50–70 |
| Sorrel | Jan 31 | Feb 21 | Feb 28 | Apr 11 – Jun 13 | 40–60 |
| Stevia | Jan 17 | Mar 14 | Mar 21 | May 23 – Aug 1 | 60–90 |
| Tarragon | — | — | Mar 14 | May 16 – Jul 25 | 60–90 |
| Thai Basil | Jan 17 | Mar 14 | Mar 21 | May 16 – Jul 18 | 50–75 |
| Thyme | — | — | Mar 14 | May 23 – Jul 25 | 70–90 |
| Valerian | — | — | Mar 14 | Jul 18 – Oct 24 | 120–180 |
| Yarrow | — | — | Mar 14 | Jun 13 – Aug 29 | 90–120 |
Monthly Planting Guide for Guadalupe County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Guadalupe County.
Frequently Asked Questions
What planting zone is Guadalupe County, TX?
Guadalupe 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 Guadalupe County, TX?
Based on 31 years of NOAA weather station data, the median last spring frost in Guadalupe County falls around March 7. In 8 out of 10 years, last frost lands between February 10 and April 6 — a 55-day window of variability. Use April 6 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in Guadalupe County, TX?
The median first fall frost in Guadalupe County arrives around November 21. In cold years it can arrive as early as October 31; in mild years as late as December 11. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Guadalupe County?
Guadalupe County has a frost-free growing season of approximately 259 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 6.72 days per decade.
What is the soil like in Guadalupe County for gardening?
Guadalupe County has predominantly Clay soil with a pH range of 6.9–8.2 and Moderately Well Drained drainage. The native soil conditions make raised beds a particularly good investment here — they let you control drainage and fertility independent of the ground soil.
What is grown commercially in Guadalupe County?
Guadalupe County has commercial agriculture that includes Cattle, Cotton, Sorghum, Wheat, Hay. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is Guadalupe County a good location for home gardening?
Guadalupe County scores 30/100 (Challenging) 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 Guadalupe 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.
