Frost Dates for Del Rio, TX 78840
Last spring frost February 19 · First fall frost December 1 · 285 frost-free days · USDA Zone 8b
ZIP 78840 has about 47,300 people, the largest of 3 ZIP codes in Del Rio.
Very long season: 285 frost-free days. Spring frost risk spans January 26–March 15 (48 days). Fall frost risk spans November 4–December 28 (54 days).
Frost probability for 78840
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | March 15 | February 19 | January 26 |
| Fall (first frost) | November 4 | December 1 | December 28 |
Dates come from NOAA 1971–2000 freeze probabilities at DEL RIO AP (40.8 km away); the 50% date is the median year.
Frost dates by ZIP code in Del Rio, TX
| ZIP | Last spring frost (50%) | First fall frost (50%) | Zone |
|---|---|---|---|
| 78840 | February 19 | December 1 | 8b |
| 78841 | March 9 | November 21 | 8b |
| 78842 | February 19 | December 1 | 9a |
Which crops fit a 285-day season in Del Rio
In Del Rio (285 frost-free days, a very long season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.
| Crop | Start indoors | Plant out / sow | Days you have | Verdict | Last sow date |
|---|---|---|---|---|---|
| Tomato | Jan 15 | Mar 5–Mar 12 | 243 | fits: 80 days to maturity, 243 available after Mar 5. | Aug 1 |
| Pepper | Jan 8 | Mar 5–Mar 12 | 243 | fits: 75 days to maturity, 243 available after Mar 5. | Aug 6 |
| Lettuce | Dec 25 | Jan 22–Jan 29 | 320 | two-plantings: Plant Jan 22 and again by Oct 10; both mature before Dec 8. | Oct 10 |
| Carrots | — | Jan 29–Feb 5 | 327 | fits: 70 days to maturity, 327 available after Jan 29. | Sep 29 |
| Cucumber | Jan 29 | Mar 5–Mar 12 | 257 | two-plantings: Plant Mar 5 and again by Sep 4; both mature before Nov 17. | Sep 4 |
| Beans | — | Feb 26–Mar 12 | 271 | two-plantings: Plant Feb 26 and again by Sep 11; both mature before Nov 24. | Sep 11 |
| Peas | — | Dec 25–Mar 5 | 348 | fits: 65 days to maturity, 348 available after Dec 25. | Sep 20 |
| Zucchini | Feb 5 | Mar 5–Mar 12 | 257 | two-plantings: Plant Mar 5 and again by Sep 9; both mature before Nov 17. | Sep 9 |
| Onion | Nov 27 | Jan 22–Feb 5 | 320 | fits: 100 days to maturity, 320 available after Jan 22. | — |
| Spinach | — | Dec 25–Feb 12 | 362 | two-plantings: Plant Dec 25 and again by Oct 29; both mature before Dec 22. | Oct 29 |
| Kale | Dec 11 | Jan 22–Feb 5 | 334 | two-plantings: Plant Jan 22 and again by Oct 14; both mature before Dec 22. | Oct 14 |
| Broccoli | Dec 25 | Jan 22–Feb 5 | 320 | fits: 80 days to maturity, 320 available after Jan 22. | Sep 5 |
| Cabbage | Dec 25 | Jan 22–Feb 5 | 334 | fits: 70 days to maturity, 334 available after Jan 22. | Sep 29 |
| Radish | — | Dec 25–Mar 19 | 348 | two-plantings: Plant Dec 25 and again by Oct 30; both mature before Dec 8. | Oct 30 |
| Beets | — | Dec 25–Mar 19 | 348 | two-plantings: Plant Dec 25 and again by Sep 30; both mature before Dec 8. | Sep 30 |
| Potatoes | — | Feb 5–Feb 12 | 306 | fits: 90 days to maturity, 306 available after Feb 5. | — |
| Garlic | — | Dec 1 | 390 | overwinter: Plant Dec 1 to Dec 22; harvest the following summer. | Dec 22 |
| Strawberry | — | Jan 15–Mar 12 | 341 | perennial: A perennial: plant Jan 15; it fruits from the following year and keeps producing for several years. | — |
| Corn | Jan 22 | Feb 26–Mar 5 | 257 | fits: 75 days to maturity, 257 available after Feb 26. | Aug 13 |
| Pumpkin | Feb 5 | Mar 5–Mar 5 | 250 | fits: 100 days to maturity, 250 available after Mar 5. | Jul 19 |
| Cauliflower | Jan 8 | Feb 12–Feb 26 | 299 | fits: 75 days to maturity, 299 available after Feb 12. | Sep 10 |
| Swiss Chard | Dec 25 | Feb 5–Feb 5 | 306 | two-plantings: Plant Feb 5 and again by Sep 30; both mature before Dec 8. | Sep 30 |
| Arugula | — | Dec 25–Mar 19 | 362 | two-plantings: Plant Dec 25 and again by Oct 29; both mature before Dec 22. | Oct 29 |
| Brussel Sprouts | Dec 25 | Jan 22–Feb 5 | 334 | fits: 100 days to maturity, 334 available after Jan 22. | Aug 30 |
| Butternut Squash | Feb 5 | Mar 5–Mar 12 | 250 | fits: 100 days to maturity, 250 available after Mar 5. | Jul 19 |
| Eggplant | Jan 1 | Mar 5–Mar 12 | 243 | fits: 70 days to maturity, 243 available after Mar 5. | Aug 11 |
| Okra | Jan 22 | Feb 26–Mar 5 | 264 | two-plantings: Plant Feb 26 and again by Sep 9; both mature before Nov 17. | Sep 9 |
| Basil | Jan 15 | Mar 12–Mar 12 | 250 | two-plantings: Plant Mar 12 and again by Sep 4; both mature before Nov 17. | Sep 4 |
| Cilantro | — | Jan 22–Feb 12 | 320 | two-plantings: Plant Jan 22 and again by Oct 5; both mature before Dec 8. | Oct 5 |
| Parsley | Dec 11 | Feb 26–Mar 5 | 285 | fits: 70 days to maturity, 285 available after Feb 26. | Sep 15 |
| Celery | Dec 11 | Feb 26–Mar 12 | 285 | fits: 120 days to maturity, 285 available after Feb 26. | Jul 27 |
| Scallions | Dec 11 | Jan 22–Feb 5 | 334 | two-plantings: Plant Jan 22 and again by Oct 9; both mature before Dec 22. | Oct 9 |
| Turnip | — | Jan 22–Feb 5 | 334 | two-plantings: Plant Jan 22 and again by Oct 19; both mature before Dec 22. | Oct 19 |
| Kohlrabi | — | Jan 8–Jan 22 | 348 | two-plantings: Plant Jan 8 and again by Oct 14; both mature before Dec 22. | Oct 14 |
| Bok Choy | Jan 22 | Feb 12–Feb 19 | 299 | two-plantings: Plant Feb 12 and again by Oct 10; both mature before Dec 8. | Oct 10 |
| Collards | Dec 11 | Jan 22–Feb 5 | 334 | two-plantings: Plant Jan 22 and again by Oct 9; both mature before Dec 22. | Oct 9 |
| Cantaloupe | Feb 5 | Mar 5–Mar 12 | 243 | fits: 85 days to maturity, 243 available after Mar 5. | Jul 27 |
| Chives | Nov 27 | Feb 26–Mar 5 | 299 | fits: 90 days to maturity, 299 available after Feb 26. | — |
| Dill | — | Dec 25–Mar 19 | 348 | two-plantings: Plant Dec 25 and again by Sep 30; both mature before Dec 8. | Sep 30 |
| Oregano | Dec 11 | Feb 26–Mar 5 | 299 | fits: 80 days to maturity, 299 available after Feb 26. | — |
| Rosemary | Nov 27 | Feb 26–Mar 5 | 285 | fits: 80 days to maturity, 285 available after Feb 26. | — |
| Sage | Dec 25 | Feb 26–Mar 5 | 299 | fits: 75 days to maturity, 299 available after Feb 26. | — |
| Thyme | Dec 11 | Feb 26–Mar 5 | 299 | fits: 90 days to maturity, 299 available after Feb 26. | — |
| Calendula | Jan 8 | Feb 5–Feb 19 | 306 | two-plantings: Plant Feb 5 and again by Oct 5; both mature before Dec 8. | Oct 5 |
| Cosmos | Jan 22 | Feb 19–Mar 5 | 271 | two-plantings: Plant Feb 19 and again by Sep 4; both mature before Nov 17. | Sep 4 |
| Lavender | Nov 27 | Feb 19–Mar 5 | 306 | fits: 90 days to maturity, 306 available after Feb 19. | — |
| Marigolds | Jan 8 | Feb 19–Feb 26 | 271 | two-plantings: Plant Feb 19 and again by Sep 14; both mature before Nov 17. | Sep 14 |
| Melons | Feb 5 | Mar 5–Mar 12 | 243 | fits: 85 days to maturity, 243 available after Mar 5. | Jul 27 |
| Mint | — | Feb 19–Mar 5 | 306 | fits: 90 days to maturity, 306 available after Feb 19. | — |
| Nasturtiums | Jan 22 | Feb 19–Feb 26 | 271 | two-plantings: Plant Feb 19 and again by Sep 9; both mature before Nov 17. | Sep 9 |
| Pole Beans | — | Feb 26–Mar 12 | 264 | fits: 65 days to maturity, 264 available after Feb 26. | Aug 30 |
| Spaghetti Squash | Feb 5 | Mar 5–Mar 12 | 250 | fits: 90 days to maturity, 250 available after Mar 5. | Jul 29 |
| Sunflowers | — | Feb 19–Mar 5 | 271 | fits: 70 days to maturity, 271 available after Feb 19. | Aug 25 |
| Tomatillos | Dec 25 | Feb 26–Mar 5 | 250 | fits: 75 days to maturity, 250 available after Feb 26. | Aug 6 |
| Watermelon | Feb 5 | Feb 26–Mar 5 | 250 | fits: 80 days to maturity, 250 available after Feb 26. | Aug 1 |
| Yellow Squash | Feb 5 | Mar 5–Mar 12 | 257 | two-plantings: Plant Mar 5 and again by Sep 9; both mature before Nov 17. | Sep 9 |
| Zinnias | Jan 22 | Feb 19–Mar 5 | 271 | two-plantings: Plant Feb 19 and again by Sep 4; both mature before Nov 17. | Sep 4 |
Month by month in Del Rio
| Month | What to do |
|---|---|
| January | Start indoors: Eggplant (Jan 1), Calendula (Jan 8), Cauliflower (Jan 8), Marigolds (Jan 8), Pepper (Jan 8), Basil (Jan 15), +8 more. Direct sow from: Kohlrabi (Jan 8), Cilantro (Jan 22), Turnip (Jan 22), Carrots (Jan 29). Transplant from: Broccoli (Jan 22), Brussel Sprouts (Jan 22), Cabbage (Jan 22), Collards (Jan 22), Kale (Jan 22), Lettuce (Jan 22), +2 more. Plant: Strawberry (Jan 15). |
| February | Start indoors: Butternut Squash (Feb 5), Cantaloupe (Feb 5), Melons (Feb 5), Pumpkin (Feb 5), Spaghetti Squash (Feb 5), Watermelon (Feb 5), +2 more. Direct sow from: Potatoes (Feb 5), Sunflowers (Feb 19), Beans (Feb 26), Pole Beans (Feb 26). Transplant from: Calendula (Feb 5), Swiss Chard (Feb 5), Bok Choy (Feb 12), Cauliflower (Feb 12), Cosmos (Feb 19), Lavender (Feb 19), +15 more. Last frost around February 19. |
| March | Transplant from: Butternut Squash (Mar 5), Cantaloupe (Mar 5), Cucumber (Mar 5), Eggplant (Mar 5), Melons (Mar 5), Pepper (Mar 5), +6 more. |
| April | Succession plant lettuce and greens. Keep beds weeded and watered consistently. |
| May | Harvest regularly to encourage production. Monitor for pests and disease. |
| June | Midsummer: harvest beans, zucchini, cucumbers. Start brassica seeds indoors for fall. |
| July | Last sowing dates: Butternut Squash (Jul 19), Pumpkin (Jul 19), Cantaloupe (Jul 27), Celery (Jul 27), Melons (Jul 27), Spaghetti Squash (Jul 29). |
| August | Last sowing dates: Tomato (Aug 1), Watermelon (Aug 1), Pepper (Aug 6), Tomatillos (Aug 6), Eggplant (Aug 11), Corn (Aug 13), +3 more. |
| September | Last sowing dates: Basil (Sep 4), Cosmos (Sep 4), Cucumber (Sep 4), Zinnias (Sep 4), Broccoli (Sep 5), Nasturtiums (Sep 9), +13 more. |
| October | Last sowing dates: Calendula (Oct 5), Cilantro (Oct 5), Collards (Oct 9), Scallions (Oct 9), Bok Choy (Oct 10), Lettuce (Oct 10), +6 more. |
| November | Start indoors: Chives (Nov 27), Lavender (Nov 27), Onion (Nov 27), Rosemary (Nov 27). |
| December | Start indoors: Celery (Dec 11), Collards (Dec 11), Kale (Dec 11), Oregano (Dec 11), Parsley (Dec 11), Scallions (Dec 11), +8 more. Direct sow from: Garlic (Dec 1), Arugula (Dec 25), Beets (Dec 25), Dill (Dec 25), Peas (Dec 25), Radish (Dec 25), +1 more. First frost around December 1. Last sowing dates: Garlic (Dec 22). |
Frequently Asked Questions
What is the last frost date for Del Rio, TX (ZIP 78840)?
The median last spring frost date for Del Rio, TX (ZIP code 78840) is around February 19. This is the 50th-percentile date — meaning half of all years see frost end before this date. Use the 10% and 90% dates to understand the full range of risk in your area. One year in ten frost ends before January 26; one in ten it runs past March 15.
What is the first fall frost date in Del Rio, TX?
The median first fall frost date for Del Rio, TX is around December 1. Plan to harvest or protect frost-sensitive crops like tomatoes and peppers at least a week before this date to avoid losses. The first frost arrives around November 4 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Del Rio, TX?
The frost-free growing season in Del Rio is about 285 days. This window — from your last spring frost to your first fall frost — is when warm-season vegetables thrive. Cold-hardy crops like kale, spinach, and peas can extend your season by weeks on either side. In Del Rio (285 frost-free days, a very long season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.
What USDA hardiness zone is Del Rio, TX?
Del Rio, TX is in USDA hardiness zone 8b (2023 USDA Plant Hardiness Zone Map). Zones come from the average coldest winter temperature, so they tell you which perennials survive the winter; the frost dates on this page tell you when to plant.
When should I start tomatoes indoors in Del Rio, TX?
Start tomatoes indoors Jan 15 and plant out Mar 5 in Del Rio. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Del Rio?
Two: plant Jan 22 and again by Oct 10; both mature before Dec 8.
When do I plant garlic in Del Rio?
Dec 1 to Dec 22; it overwinters and is ready the following summer.
Can I get two tomato crops in Del Rio?
Yes: plant out Mar 5 for a summer crop, and set out a second round of transplants by Aug 1 for a fall crop.
Which nearby ZIP has a longer season?
Eagle Pass (ZIP 78852) has 292 frost-free days, 7 more than Del Rio (ZIP 78840). See Eagle Pass ZIP 78852 frost dates
Nearby and related
- Frost dates for Uvalde, TX 78801 (67.6 mi)
- Frost dates for Eagle Pass, TX 78852 (73.1 mi)
- Frost dates for Kerrville, TX 78028 (107.5 mi)
- Frost dates for Hondo, TX 78861 (108.2 mi)
- Frost dates for San Angelo, TX 76904 (110.7 mi)
- When to plant in TX
- When to plant Peppers in TX
- When to plant Cucumbers in TX
- When to plant Zucchini in TX
- When to plant Butternut Squash in TX
- When to plant Basil in TX
- When to plant Sweet Corn in TX
- Look up another ZIP