Dallam County, TX — Planting Guide
Dallam County is in USDA Zone 6b. The average last spring frost is April 26 and the first fall frost is October 14, giving you a growing season of approximately 171 days.
At an elevation of 3,388 ft, Dallam County receives approximately 54.4 in of rainfall annually. Summer highs average 96°F with winter lows around 22°F. The predominant soil type is Sandy Loam.
Based on 31 years of NOAA climate station data, the last frost date here varies by 29 days year to year — ranging from April 9 in warm years to May 8 in cold years. The growing season is trending longer by about 0.78 days per decade. Dallam County scores 50/100 (Moderate) on the Microclimate Index.
🌡️ Zone
6b (-5°F to 0°F min)
❄️ Last Frost
April 26
🍂 First Frost
October 14
📅 Growing Season
171 days
⛰️ Elevation
3,388 ft
🌧️ Annual Rainfall
54.4 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 | 4 in | 2 days | — | None |
| Feb | 3 in | 3 days | — | None |
| Mar | 2.5 in | 1 days | 1.8 in | High |
| Apr | 1.7 in | 1 days | 2.6 in | High |
| May | 1 in | 1 days | 3.3 in | Critical |
| Jun | 1.7 in | 2 days | 2.6 in | High |
| Jul | 9.9 in | 6 days | — | Low |
| Aug | 11.7 in | 7 days | — | Low |
| Sep | 8 in | 5 days | — | Low |
| Oct | 4 in | 2 days | 0.3 in | Low |
| Nov | 3.3 in | 2 days | — | None |
| Dec | 3.4 in | 2 days | — | None |
Annual total: 54.2 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.
Dallam County Soil Profile
Soil Type
Sandy Loam
Soil pH
7.9-8.4
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) | May 8 | Oct 26 | 171 days |
| Cautious | May 2 | Oct 18 | 169 days |
| Average year | Apr 26 | Oct 14 | 171 days |
| Optimistic | Apr 20 | Oct 8 | 171 days |
| Aggressive (risky) | Apr 9 | Sep 28 | 172 days |
Not very — frost dates can vary by ±29 days year-to-year. Use the "Conservative" row in the table below, and keep row covers handy for surprise late frosts.
Slightly — seasons are trending a bit longer (0.8 days/decade). Historical frost dates are still reliable for planning.
Gardening Difficulty Score
Dallam County presents some gardening challenges. Choose adapted varieties and plan around frost dates.
Local Gardening Help in Dallam 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 Dallam County's climate and soil.
County Extension Office
Dallam 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 Dallam County
Finding local nurseries & garden centers in Dallam County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Dallam 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 Dallam County TX" or "garden center Dallam 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 Dallam County TX" or check your extension office and local parks department. Facebook groups like "Dallam 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
14.5 hours
Summer solstice daylight
Shortest Day
9.5 hours
Winter solstice daylight
Peak Sun Hours
10.1 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: Day-neutral onion varieties like Candy, Cabernet, and Sierra Blanca perform best in your day-length range.
View detailed monthly data
| Month | Daylight Hours | Peak Sun Hours | Day Length |
|---|---|---|---|
| January | 9.8 hr | 5.7 hr | Short day |
| February | 10.7 hr | 6.1 hr | Short day |
| March | 11.7 hr | 7.1 hr | Short day |
| April | 12.9 hr | 8.3 hr | Neutral |
| May | 13.9 hr | 8.2 hr | Neutral |
| June | 14.5 hr | 9.7 hr | Long day |
| July | 14.2 hr | 10.1 hr | Long day |
| August | 13.4 hr | 9.7 hr | Neutral |
| September | 12.2 hr | 8 hr | Neutral |
| October | 11 hr | 7.4 hr | Short day |
| November | 10 hr | 5.8 hr | Short day |
| December | 9.5 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 Jun through Sep.
Best Month to Compost
Jun
Microbial activity peaks when soil is warm.
Active Composting
6 months
Solid season. Piles go dormant in winter.
View detailed monthly data
| Month | Soil 4" Deep | Soil 8" Deep | Compost Activity | Time to Finish |
|---|---|---|---|---|
| Jan | 25°F | 31°F | ❄️ Dormant | ~36 weeks |
| Feb | 25°F | 31°F | ❄️ Dormant | ~36 weeks |
| Mar | 30°F | 34°F | ❄️ Dormant | ~36 weeks |
| Apr | 43°F | 44°F | 🐢 Slow | ~24 weeks |
| May | 54°F | 54°F | ♻️ Active | ~14 weeks |
| Jun | 66°F | 62°F | 🔥 Peak | ~8 weeks |
| Jul | 75°F | 68°F | 🔥 Peak | ~8 weeks |
| Aug | 76°F | 69°F | 🔥 Peak | ~8 weeks |
| Sep | 70°F | 67°F | 🔥 Peak | ~8 weeks |
| Oct | 53°F | 57°F | ♻️ Active | ~14 weeks |
| Nov | 43°F | 48°F | 🐢 Slow | ~24 weeks |
| Dec | 29°F | 36°F | ❄️ Dormant | ~36 weeks |
Highlighted rows = soil 60°F+ (safe for warm-season transplants). Compost finishes fastest during peak activity months.
Pest & Disease Pressure in Dallam County
Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.
Insect Pest Pressure
Moderate — common pests appear but manageable with monitoring.
Disease Risk
Moderate — watch for mildew and blight during wet periods.
Seasonal Risk
View 6 common pests in your area
| Pest | Risk Level | Peak Months |
|---|---|---|
| Aphids | High | Apr, May, Jun, Jul, Aug, Sep |
| Japanese beetles | High | Jun, Jul, Aug |
| Squash vine borers | Moderate | Jun, Jul |
| Tomato hornworms | Moderate | Jun, Jul, Aug |
| Cucumber beetles | Low | May, Jun, Jul |
| Stink bugs | Moderate | Jun, Jul, Aug, Sep |
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 Dallam County
Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with county-specific planting dates.
Spring Cover Crops (3 options) — Build soil before the main growing season
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Buckwheat | Apr 26 | Aug 19 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Sorghum-sudan grass | May 3 | Aug 12 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | Mar 28 | Aug 12 | ✓ Yes | Living mulch, fixes nitrogen, permanent ground cover |
Summer Cover Crops (1 options) — Fill gaps and suppress weeds between plantings
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Sunflowers | May 13 | Sep 23 | — | Deep roots break compaction, attract pollinators and beneficial insects |
Fall Cover Crops (7 options) — Plant after harvest to protect soil over winter
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Austrian winter peas | Aug 16 | Apr 5 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Crimson clover | Aug 11 | Apr 12 | ✓ Yes | Fixes nitrogen, attracts pollinators in spring |
| Daikon radish | Aug 16 | Apr 5 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Jul 29 | Apr 5 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Sep 16 | Apr 12 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Jul 23 | Apr 5 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Jul 25 | Apr 12 | — | 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: 20 mph Summer: 13 mph
Fall: 14 mph Winter: 18 mph
Prevailing wind: S. Windy area — plant a windbreak hedge on the S side of your garden.
Windbreak Benefit
8.5/10
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 (209 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
27,013 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
Jan, Jul, Aug, Sep
Highest rainfall months — your barrels will fill up quickly during these months.
Months to Draw From Storage
Apr, May, Jun
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 54.2 inches of rain per year
- A 1,000 sq ft roof can collect roughly 27,013 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 Dallam County
Soil Type
Sandy Loam
Soil pH 7.9–8.4 · 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
171-day frost-free season
Start warm-season crops indoors and focus on short-season varieties. Cold frames extend your season by 3–4 weeks in fall.
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
Retain moisture and nutrients in sandy soils with expanded vermiculite.
Test your soil pH, nitrogen, phosphorus, and potassium levels before planting.
Get instant, accurate soil pH readings to fine-tune your amendments.
🥬 Vegetables to Grow in Dallam County
108 vegetables that grow well in Zone 6b with planting dates for Dallam County.
Show all 108 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Acorn Squash | Mar 22 | May 3 | May 10 | Aug 2 – Sep 6 | 80–100 |
| Amaranth | Mar 1 | May 3 | May 10 | Aug 9 – Sep 27 | 90–120 |
| Arugula | Mar 22 | Apr 12 | Apr 26 | May 31 – Aug 2 | 30–50 |
| Asparagus | — | — | May 10 | — | 730–1095 |
| Beets | — | Apr 12 | — | Jun 7 – Jul 5 | 50–70 |
| Belgian Endive | Mar 22 | Apr 12 | Apr 26 | Aug 16 – Oct 11 | 110–150 |
| Bitter Melon | Mar 1 | May 3 | May 10 | Jul 12 – Aug 23 | 60–90 |
| Black Beans | — | May 3 | — | Aug 2 – Sep 20 | 90–120 |
| Bok Choy | Mar 22 | Apr 12 | Apr 26 | Jun 7 – Jul 12 | 40–60 |
| Broccoli | Mar 22 | Apr 12 | Apr 26 | Jun 28 – Aug 9 | 60–90 |
| Broccoli Rabe | Mar 22 | Apr 12 | Apr 26 | Jun 7 – Jul 12 | 40–60 |
| Brussels Sprouts | Mar 22 | Apr 12 | Apr 26 | Jul 26 – Sep 20 | 90–130 |
| Butternut Squash | Mar 22 | May 3 | May 10 | Aug 9 – Sep 13 | 85–110 |
| Cabbage | Mar 22 | Apr 12 | Apr 26 | Jun 28 – Aug 23 | 60–100 |
| Calabash | Mar 1 | May 3 | May 10 | Aug 2 – Sep 27 | 80–120 |
| Carrots | — | Apr 12 | — | Jun 14 – Jul 19 | 60–80 |
| Cauliflower | Mar 22 | Apr 12 | Apr 26 | Jun 21 – Aug 23 | 55–100 |
| Celeriac | Mar 22 | Apr 12 | Apr 26 | Aug 9 – Sep 13 | 100–120 |
| Celery | Mar 22 | Apr 12 | Apr 26 | Jul 19 – Sep 13 | 80–120 |
| Celtuce | Mar 22 | Apr 12 | Apr 26 | Jun 28 – Aug 9 | 60–90 |
| Chard | Mar 22 | Apr 12 | Apr 26 | Jun 21 – Aug 9 | 50–60 |
| Chickpeas | Mar 22 | Apr 12 | Apr 26 | Jul 19 – Aug 30 | 80–110 |
| Chicory | Mar 22 | Apr 12 | Apr 26 | Jun 28 – Aug 9 | 60–85 |
| Chinese Cabbage | Mar 22 | Apr 12 | Apr 26 | Jun 21 – Jul 19 | 50–70 |
| Christmas Lima Beans | Mar 1 | May 3 | May 10 | Aug 2 – Sep 6 | 80–100 |
| Collard Greens | Mar 22 | Apr 12 | Apr 26 | Jun 21 – Aug 23 | 55–75 |
| Corn | — | May 3 | — | Jul 5 – Aug 30 | 60–100 |
| Cowpeas | — | May 3 | — | Jul 5 – Aug 16 | 60–90 |
| Cress | Mar 22 | Apr 12 | Apr 26 | May 10 – May 31 | 14–21 |
| Crookneck Squash | Mar 22 | May 3 | May 10 | Jun 28 – Jul 26 | 45–60 |
| Crosne | — | Apr 12 | — | Sep 13 – Oct 25 | 150–200 |
| Cucumber | Mar 22 | May 3 | May 10 | Jul 5 – Aug 30 | 50–70 |
| Daikon | — | Apr 12 | — | Jun 7 – Jul 5 | 50–70 |
| Delicata Squash | Mar 22 | May 3 | May 10 | Aug 2 – Sep 6 | 80–100 |
| Edamame | — | May 3 | — | Jul 19 – Aug 30 | 75–100 |
| Eggplant | Feb 15 | May 3 | May 10 | Jul 19 – Sep 20 | 65–85 |
| Endive | Mar 22 | Apr 12 | Apr 26 | Jun 14 – Jul 19 | 45–65 |
| Escarole | Mar 22 | Apr 12 | Apr 26 | Jun 21 – Jul 19 | 50–70 |
| Fava Beans | Mar 22 | Apr 12 | Apr 26 | Jul 12 – Aug 23 | 75–100 |
| Fennel | Mar 1 | May 3 | May 10 | Jul 12 – Aug 23 | 60–90 |
| Garlic | — | — | — | — | 90–240 |
| Green Beans | — | May 3 | — | Jun 28 – Aug 23 | 50–65 |
| Horseradish | — | — | May 10 | Sep 13 – Nov 22 | 120–180 |
| Hot Peppers | Feb 15 | May 3 | May 10 | Jul 19 – Oct 25 | 70–120 |
| Hubbard Squash | Mar 22 | May 3 | May 10 | Aug 23 – Sep 27 | 100–120 |
| Kabocha | Mar 22 | May 3 | May 10 | Aug 9 – Sep 6 | 85–100 |
| Kai Lan | Mar 22 | Apr 12 | Apr 26 | Jun 14 – Jul 12 | 45–60 |
| Kale | Mar 22 | Apr 12 | Apr 26 | Jun 21 – Aug 16 | 50–70 |
| Kidney Beans | — | May 3 | — | Aug 2 – Sep 6 | 85–110 |
| Kohlrabi | Mar 22 | Apr 12 | Apr 26 | Jun 14 – Jul 19 | 45–65 |
| Komatsuna | Mar 22 | Apr 12 | Apr 26 | May 31 – Jul 5 | 35–50 |
| Leeks | Mar 22 | Apr 12 | Apr 26 | Jul 26 – Oct 11 | 90–150 |
| Lentils | Mar 22 | Apr 12 | Apr 26 | Jul 19 – Aug 30 | 80–110 |
| Lettuce | Mar 22 | Apr 12 | Apr 26 | May 31 – Aug 9 | 30–60 |
| Lima Beans | — | May 3 | — | Jul 5 – Aug 16 | 60–90 |
| Loofah | Mar 1 | May 3 | May 10 | Aug 23 – Oct 25 | 100–150 |
| Luffa | Mar 1 | May 3 | May 10 | Aug 9 – Oct 25 | 90–150 |
| Mache | Mar 22 | Apr 12 | Apr 26 | Jun 7 – Jul 12 | 40–60 |
| Melon | Mar 22 | May 3 | May 10 | Jul 19 – Sep 6 | 70–100 |
| Microgreens | Mar 22 | Apr 12 | Apr 26 | May 3 – May 31 | 7–21 |
| Mitsuba | Mar 22 | Apr 12 | Apr 19 | Jun 14 – Aug 9 | 50–70 |
| Mizuna | Mar 22 | Apr 12 | Apr 26 | May 31 – Jun 28 | 30–45 |
| Mustard Greens | Mar 22 | Apr 12 | Apr 26 | May 31 – Aug 2 | 30–50 |
| Napa Cabbage | Mar 22 | Apr 12 | Apr 26 | Jun 21 – Jul 26 | 55–75 |
| New Zealand Spinach | Mar 1 | May 3 | May 10 | Jul 5 – Aug 2 | 55–70 |
| Okra | Mar 1 | May 3 | May 10 | Jul 5 – Aug 30 | 50–65 |
| Onion | Mar 22 | Apr 12 | Apr 26 | Jul 26 – Sep 13 | 90–120 |
| Pac Choi | Mar 22 | Apr 12 | Apr 26 | Jun 7 – Jul 5 | 40–55 |
| Parsnip | — | Apr 12 | — | Jul 26 – Sep 6 | 100–130 |
| Patty Pan Squash | Mar 22 | May 3 | May 10 | Jun 28 – Jul 26 | 45–60 |
| Peas | Mar 22 | Apr 12 | Apr 26 | Jun 21 – Aug 16 | 55–70 |
| Peppers | Feb 15 | May 3 | May 10 | Jul 12 – Sep 20 | 60–90 |
| Pole Beans | Mar 1 | May 3 | May 10 | Jul 5 – Aug 30 | 55–70 |
| Potatoes | Mar 1 | May 3 | May 10 | Jul 19 – Sep 27 | 70–120 |
| Pumpkin | Mar 22 | May 3 | May 10 | Aug 9 – Sep 27 | 85–120 |
| Purslane | Mar 22 | Apr 12 | Apr 26 | Jun 7 – Jul 12 | 40–60 |
| Radicchio | Mar 22 | Apr 12 | Apr 26 | Jun 28 – Aug 2 | 60–80 |
| Radish | — | Apr 12 | — | May 10 – May 31 | 22–35 |
| Rhubarb | — | — | May 17 | — | 365–730 |
| Romanesco | Mar 22 | Apr 12 | Apr 26 | Jul 12 – Aug 23 | 75–100 |
| Rutabaga | — | Apr 12 | — | Jul 5 – Aug 9 | 80–100 |
| Salsify | — | Apr 12 | — | Jul 26 – Sep 6 | 100–130 |
| Savoy Cabbage | Mar 22 | Apr 12 | Apr 26 | Jul 5 – Aug 30 | 70–110 |
| Scallions | Mar 22 | Apr 12 | Apr 26 | Jun 21 – Jul 19 | 50–70 |
| Scarlet Runner Beans | Mar 1 | May 3 | May 10 | Jul 12 – Aug 16 | 60–80 |
| Shallot | Mar 22 | Apr 12 | Apr 26 | Jul 26 – Sep 13 | 90–120 |
| Shiso | Mar 8 | May 3 | May 10 | Jul 5 – Aug 30 | 50–70 |
| Snap Peas | Mar 1 | May 3 | May 10 | Jul 5 – Aug 30 | 55–70 |
| Snow Peas | Mar 22 | Apr 12 | Apr 26 | Jun 21 – Aug 16 | 50–65 |
| Soybeans | — | May 3 | — | Jul 26 – Sep 20 | 80–120 |
| Spaghetti Squash | Mar 22 | May 3 | May 10 | Aug 9 – Sep 6 | 85–100 |
| Spinach | Mar 22 | Apr 12 | Apr 26 | May 31 – Aug 2 | 35–50 |
| Squash (Summer) | Mar 22 | May 3 | May 10 | Jun 28 – Aug 30 | 45–65 |
| Squash (Winter) | Mar 22 | May 3 | May 10 | Aug 2 – Sep 27 | 80–120 |
| Sunchoke | — | — | May 10 | Aug 30 – Oct 25 | 110–150 |
| Sunflower | Mar 1 | May 3 | May 10 | Jul 19 – Sep 6 | 70–100 |
| Sweet Corn | — | May 3 | — | Jul 5 – Aug 16 | 60–90 |
| Sweet Potatoes | Mar 1 | May 3 | May 10 | Aug 9 – Sep 27 | 90–120 |
| Tatsoi | Mar 22 | Apr 12 | Apr 26 | May 31 – Jul 5 | 35–50 |
| Tomatillo | Mar 1 | May 3 | May 10 | Jul 12 – Sep 20 | 60–85 |
| Tomatoes | Mar 1 | May 3 | May 10 | Jul 12 – Sep 20 | 60–85 |
| Turnip | — | Apr 12 | — | May 24 – Jun 28 | 40–60 |
| Watercress | Mar 22 | Apr 12 | Apr 26 | Jun 7 – Jul 12 | 40–60 |
| Watermelon | Mar 22 | May 3 | May 10 | Jul 19 – Sep 6 | 70–100 |
| Wax Beans | — | May 3 | — | Jun 28 – Aug 23 | 50–65 |
| Winter Melon | Mar 1 | May 3 | May 10 | Aug 9 – Sep 27 | 90–120 |
| Yard Long Beans | Mar 1 | May 3 | May 10 | Jul 5 – Aug 16 | 55–80 |
| Zucchini | Mar 22 | May 3 | May 10 | Jun 28 – Aug 23 | 45–60 |
🍓 Fruits to Grow in Dallam County
27 fruits that grow well in Zone 6b with planting dates for Dallam County.
Show all 27 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Alpine Strawberries | — | — | May 17 | Aug 16 – Nov 29 | 90–180 |
| Aronia | — | — | May 17 | — | 730–1095 |
| Blackberries | — | — | May 17 | — | 365–730 |
| Blueberries | — | — | May 17 | — | 730–1095 |
| Boysenberries | — | — | May 17 | — | 365–730 |
| Cantaloupe | — | — | May 17 | Jul 26 – Aug 30 | 70–90 |
| Che Fruit | — | — | May 17 | — | 1095–1825 |
| Cranberries | — | — | May 17 | — | 730–1095 |
| Currants | — | — | May 17 | — | 730–1095 |
| Elderberries | — | — | May 17 | — | 730–1095 |
| Goji Berries | — | — | May 17 | — | 730–1095 |
| Gooseberries | — | — | May 17 | — | 730–1095 |
| Grapes | — | — | May 17 | — | 730–1095 |
| Ground Cherry | — | — | May 17 | Jul 26 – Sep 20 | 65–80 |
| Hardy Kiwi | — | — | May 17 | — | 1095–1825 |
| Haskaps | — | — | May 17 | — | 730–1095 |
| Honeydew | — | — | May 17 | Aug 9 – Sep 20 | 80–110 |
| Jostaberry | — | — | May 17 | — | 730–1095 |
| Lingonberries | — | — | May 17 | — | 730–1095 |
| Medlar | — | — | May 17 | — | 1095–1825 |
| Mulberries | — | — | May 17 | — | 730–1825 |
| Pawpaw | — | — | May 17 | — | 1095–2555 |
| Persimmon | — | — | May 17 | — | 1095–2555 |
| Quince | — | — | May 17 | — | 1095–1825 |
| Raspberries | — | — | May 17 | — | 365–730 |
| Serviceberries | — | — | May 17 | — | 730–1095 |
| Strawberries | — | — | May 17 | Aug 16 – Nov 29 | 90–365 |
🌿 Herbs to Grow in Dallam County
38 herbs that grow well in Zone 6b with planting dates for Dallam County.
Show all 38 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Angelica | Mar 22 | Apr 12 | Apr 19 | — | 365–730 |
| Anise | Mar 22 | Apr 12 | Apr 19 | Jul 19 – Oct 4 | 90–120 |
| Basil | Mar 8 | May 3 | May 10 | Jul 5 – Sep 6 | 50–75 |
| Bee Balm | — | — | May 3 | Aug 2 – Oct 18 | 90–120 |
| Borage | Mar 22 | Apr 12 | Apr 19 | Jun 14 – Aug 2 | 50–60 |
| Caraway | Mar 22 | Apr 12 | Apr 19 | — | 365–450 |
| Catnip | — | — | May 3 | Jul 5 – Sep 6 | 60–80 |
| Chamomile | Mar 22 | Apr 12 | Apr 19 | Jun 21 – Aug 30 | 60–90 |
| Chervil | Mar 22 | Apr 12 | Apr 19 | May 31 – Aug 2 | 40–60 |
| Chives | — | — | May 3 | Jul 5 – Sep 13 | 60–90 |
| Cilantro | Mar 22 | Apr 12 | Apr 19 | May 31 – Aug 2 | 40–60 |
| Comfrey | — | — | May 3 | Jul 5 – Sep 13 | 60–90 |
| Cumin | Mar 22 | Apr 12 | Apr 19 | Aug 2 – Oct 4 | 100–120 |
| Dill | Mar 22 | Apr 12 | Apr 19 | May 31 – Aug 2 | 40–60 |
| Echinacea | — | — | May 3 | Sep 6 – Nov 15 | 120–180 |
| Epazote | Mar 8 | May 3 | May 10 | Jun 28 – Aug 23 | 45–60 |
| Fennel (herb) | Mar 22 | Apr 12 | Apr 19 | Jun 21 – Aug 30 | 60–90 |
| Feverfew | — | — | May 3 | Aug 2 – Oct 18 | 90–120 |
| Garlic Chives | — | — | May 3 | Jul 5 – Sep 13 | 60–90 |
| Horehound | — | — | May 3 | Jul 19 – Sep 13 | 75–90 |
| Hyssop | — | — | May 3 | Jul 12 – Sep 13 | 70–90 |
| Lavender | — | — | May 3 | Aug 2 – Nov 15 | 90–200 |
| Lemon Balm | — | — | May 3 | Jul 5 – Aug 23 | 60–70 |
| Lemon Thyme | — | — | May 3 | Jul 12 – Sep 13 | 70–90 |
| Lovage | — | — | May 3 | Jul 12 – Sep 13 | 70–90 |
| Marjoram | — | — | May 3 | Jul 5 – Sep 13 | 60–90 |
| Mint | — | — | May 3 | Jul 5 – Sep 13 | 60–90 |
| Oregano | — | — | May 3 | Jul 5 – Sep 13 | 60–90 |
| Parsley | Mar 22 | Apr 12 | Apr 19 | Jun 21 – Aug 23 | 60–80 |
| Rue | — | — | May 3 | Jul 12 – Sep 13 | 70–90 |
| Sage | — | — | May 3 | Jul 19 – Sep 13 | 75–90 |
| Savory | — | — | May 3 | Jun 28 – Aug 23 | 50–70 |
| Sorrel | Mar 22 | Apr 12 | Apr 19 | May 31 – Aug 2 | 40–60 |
| Tarragon | — | — | May 3 | Jul 5 – Sep 13 | 60–90 |
| Thai Basil | Mar 8 | May 3 | May 10 | Jul 5 – Sep 6 | 50–75 |
| Thyme | — | — | May 3 | Jul 12 – Sep 13 | 70–90 |
| Valerian | — | — | May 3 | Sep 6 – Nov 15 | 120–180 |
| Yarrow | — | — | May 3 | Aug 2 – Oct 18 | 90–120 |
Monthly Planting Guide for Dallam County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Dallam County.
Frequently Asked Questions
What planting zone is Dallam County, TX?
Dallam County is in USDA Hardiness Zone 6b. 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 Dallam County, TX?
Based on 31 years of NOAA weather station data, the median last spring frost in Dallam County falls around April 26. In 8 out of 10 years, last frost lands between April 9 and May 8 — a 29-day window of variability. Use May 8 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in Dallam County, TX?
The median first fall frost in Dallam County arrives around October 14. In cold years it can arrive as early as September 28; in mild years as late as October 26. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Dallam County?
Dallam County has a frost-free growing season of approximately 171 days. This is enough time for most warm-season crops including tomatoes, peppers, and squash with proper timing. Climate records show the growing season is trending longer by about 0.78 days per decade.
What is the soil like in Dallam County for gardening?
Dallam County has predominantly Sandy Loam soil with a pH range of 7.9–8.4 and 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 Dallam County?
Dallam County has commercial agriculture that includes Cotton, Cattle, 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 Dallam County a good location for home gardening?
Dallam County scores 50/100 (Moderate) on our Microclimate Index, which combines frost reliability, drought pressure, soil challenge, elevation risk, and long-term climate trend. Conditions here are moderate — most common crops grow well with standard timing and care.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Dallam County gardeners in Zone 6b organize planting dates, track what's growing, and never miss a planting window.
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