Galveston, TX planting zone & frost dates
Galveston is in USDA hardiness zone 10a. The last spring frost usually comes around January 25 and the first fall frost around January 1, for a growing season of about 348 days.
Planting calendar for Galveston
Dates are counted from the average last spring frost (January 25) 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: Nov 30 – Dec 14 Transplant outdoors: Feb 1 – Feb 8 |
| Peppers | Start seeds indoors: Nov 16 – Nov 30 Transplant outdoors: Feb 8 – Feb 15 |
| Eggplant | Start seeds indoors: Nov 16 – Nov 30 Transplant outdoors: Feb 8 – Feb 15 |
| Broccoli | Start seeds indoors: Nov 16 – Nov 30 Transplant outdoors: Dec 28 – Jan 11 |
| Cabbage | Start seeds indoors: Nov 16 – Nov 30 Transplant outdoors: Dec 28 – Jan 11 |
| Onions (sets) | Plant outdoors: Dec 28 – Jan 11 |
| Peas | Sow outdoors: Dec 14 – Dec 28 |
| Spinach | Sow outdoors: Dec 14 – Dec 28 |
| Lettuce | Sow outdoors: Dec 28 – Jan 11 |
| Carrots | Sow outdoors: Dec 28 – Jan 11 |
| Potatoes | Plant outdoors: Dec 28 – Jan 11 |
| Beans | Sow outdoors: Feb 1 – Feb 8 |
| Sweet corn | Sow outdoors: Feb 1 – Feb 8 |
| Cucumbers | Sow outdoors: Feb 1 – Feb 8 |
| Squash & zucchini | Sow outdoors: Feb 1 – Feb 8 |
| Basil | Start seeds indoors: Dec 14 – Dec 28 Transplant outdoors: Feb 1 – Feb 8 |
Fall garden: cool-season crops like lettuce, spinach and kale can be sown again around Nov 6 (8 weeks before the average first fall frost on Jan 1).
Useful for zone 10a 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
- Shade cloth — for hot summers
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Frost risk in detail
| 90% chance | 50% chance | 10% chance | |
|---|---|---|---|
| Last 32°F frost in spring is after | Dec 23 | Jan 25 | Feb 21 |
| First 32°F frost in fall is before | Feb 1 | Jan 1 | Dec 9 |
How to read it: in spring there is a 10% chance of a frost after February 21, so that is a safe date for tender plants. In fall there is a 10% chance of frost before December 9. A hard freeze (28°F) usually ends around January 17.
Hardiness zone by ZIP code in Galveston
- 77550 zone 10a
- 77551 zone 10a
- 77552 zone 10a
- 77553 zone 10a
- 77554 zone 10a
- 77555 zone 10a
Nearby cities
- Texas City zone 10a
- La Marque zone 9b
- Dickinson zone 9b, last frost Jan 31
- Santa Fe zone 9b, last frost Jan 31
- Seabrook zone 9b, last frost Jan 31
- League City zone 9b, last frost Jan 31
- Webster zone 9b, last frost Jan 31
- La Porte zone 9b, last frost Jan 31
Questions
What growing zone is Galveston, TX?
Galveston is in USDA Plant Hardiness Zone 10a (average extreme winter low 30°F to 35°F), according to the USDA 2023 map.
When is the last frost in Galveston?
The average last spring frost (32°F) in Galveston is January 25. There is still a 10% chance of frost until February 21.
When can I plant tomatoes in Galveston?
Transplant tomatoes outdoors 1–2 weeks after the average last frost: around Feb 1 – Feb 8. Start seeds indoors 6–8 weeks before the last frost.
Frost dates: NOAA U.S. Climate Normals 1991–2020, station Galveston, TX (USW00012944), 0.3 km (0.2 mi) from the city center, elevation 2 m, based on 12 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.