Horizon City, TX planting zone & frost dates
Horizon City is in USDA hardiness zone 8b. The last spring frost usually comes around March 2 and the first fall frost around November 20, for a growing season of about 261 days.
Planting calendar for Horizon City
Dates are counted from the average last spring frost (March 2) using the typical timing recommended by U.S. extension services. Warm-season crops go out only after the danger of frost has passed and the soil has warmed.
| Crop | When |
|---|---|
| Tomatoes | Start seeds indoors: Jan 5 – Jan 19 Transplant outdoors: Mar 9 – Mar 16 |
| Peppers | Start seeds indoors: Dec 22 – Jan 5 Transplant outdoors: Mar 16 – Mar 23 |
| Eggplant | Start seeds indoors: Dec 22 – Jan 5 Transplant outdoors: Mar 16 – Mar 23 |
| Broccoli | Start seeds indoors: Dec 22 – Jan 5 Transplant outdoors: Feb 2 – Feb 16 |
| Cabbage | Start seeds indoors: Dec 22 – Jan 5 Transplant outdoors: Feb 2 – Feb 16 |
| Onions (sets) | Plant outdoors: Feb 2 – Feb 16 |
| Peas | Sow outdoors: Jan 19 – Feb 2 |
| Spinach | Sow outdoors: Jan 19 – Feb 2 |
| Lettuce | Sow outdoors: Feb 2 – Feb 16 |
| Carrots | Sow outdoors: Feb 2 – Feb 16 |
| Potatoes | Plant outdoors: Feb 2 – Feb 16 |
| Beans | Sow outdoors: Mar 9 – Mar 16 |
| Sweet corn | Sow outdoors: Mar 9 – Mar 16 |
| Cucumbers | Sow outdoors: Mar 9 – Mar 16 |
| Squash & zucchini | Sow outdoors: Mar 9 – Mar 16 |
| Basil | Start seeds indoors: Jan 19 – Feb 2 Transplant outdoors: Mar 9 – Mar 16 |
Fall garden: cool-season crops like lettuce, spinach and kale can be sown again around Sep 25 (8 weeks before the average first fall frost on Nov 20).
Useful for zone 8b gardens
- Seed starting kit with dome — to start seeds indoors before the last frost
- LED grow light for seedlings — stops leggy seedlings
- Frost cloth / plant covers — for late spring and early fall frosts
- Soil thermometer — warm-season crops need soil above 60°F
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Frost risk in detail
| 90% chance | 50% chance | 10% chance | |
|---|---|---|---|
| Last 32°F frost in spring is after | Feb 12 | Mar 2 | Mar 19 |
| First 32°F frost in fall is before | Dec 2 | Nov 20 | Nov 6 |
How to read it: in spring there is a 10% chance of a frost after March 19, so that is a safe date for tender plants. In fall there is a 10% chance of frost before November 6. A hard freeze (28°F) usually ends around February 16.
Nearby cities
- Socorro Mission Number 1 Colonia zone 8b, last frost Mar 2
- Socorro zone 8b, last frost Mar 2
- El Paso zone 8b, last frost Mar 2
- West Odessa zone 8b, last frost Mar 19
- Andrews zone 8a, last frost Mar 18
- Odessa zone 8b, last frost Mar 15
- Midland zone 8a, last frost Mar 26
- Levelland zone 7b, last frost Apr 9
Questions
What growing zone is Horizon City, TX?
Horizon City is in USDA Plant Hardiness Zone 8b (average extreme winter low 15°F to 20°F), according to the USDA 2023 map.
When is the last frost in Horizon City?
The average last spring frost (32°F) in Horizon City is March 2. There is still a 10% chance of frost until March 19.
When can I plant tomatoes in Horizon City?
Transplant tomatoes outdoors 1–2 weeks after the average last frost: around Mar 9 – Mar 16. Start seeds indoors 6–8 weeks before the last frost.
Frost dates: NOAA U.S. Climate Normals 1991–2020, station El Paso Intl Ap, TX (USW00023044), 20.7 km (12.9 mi) from the city center, elevation 1194 m, based on 28 years of records. Hardiness zone: USDA Plant Hardiness Zone Map 2023 for the ZIP code nearest to the city center. Microclimates (valleys, hills, cities, coasts) can be warmer or colder: check the local forecast before planting. How we calculate the data.