Spring Branch, TX frost dates
Last spring frostMar 1median date
First fall frostDec 1median date
Growing season275 daysfrost-free
Hardiness zone8bZone 8b
How Spring Branch compares
- In 8 years out of 10, the last spring frost in Spring Branch falls between January 31 and March 22, a 50-day window. The first fall frost falls between November 9 and December 26.
- The median last frost is 14 days earlier than the Texas median of Mar 15.
- Its 275-day growing season is longer than 84% of the 1,316 Texas places with a regular frost season (state median 245 days).
- The last frost is 15 days earlier than the zone 8b median of Mar 16. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 8b chart.
- The weather station records an average of 18 nights a year at or below 32°F.
- Compared with New Braunfels, TX, 33 km away, the last frost here is 7 days earlier than there and the growing season is 20 days longer.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | January 31 |
| 50% (median) | March 1 |
| 10% (safe for tender plants) | March 22 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | November 9 |
| 50% (median) | December 1 |
| 90% (late) | December 26 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Planting calendar for Spring Branch, TX
Spring Branch, TX frost dates — last frost Mar 1, first frost Dec 1, zone 8b. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Dec 7 to Dec 21Transplant outside: Feb 1 to Feb 15
Start indoors: Dec 21 to Jan 4Start indoors: Dec 21 to Jan 4Transplant outside: Mar 15 to Mar 29
Start indoors: Dec 21 to Jan 4Start indoors: Dec 21 to Jan 4Transplant outside: Mar 15 to Mar 29
Start indoors: Jan 4 to Jan 18Transplant outside: Mar 8 to Mar 22
Start indoors: Jan 4 to Jan 18Transplant outside: Feb 8 to Feb 22Sow outdoors: Feb 1 to Mar 8Plant for fall: Oct 6 to Nov 3
Start indoors: Jan 4 to Jan 18Transplant outside: Feb 1 to Feb 15Sow outdoors: Feb 1 to Feb 15Plant for fall: Sep 22 to Oct 13
Start indoors: Jan 4 to Jan 18Transplant outside: Feb 15 to Mar 1Plant for fall: Aug 25 to Sep 15
Start indoors: Jan 4 to Jan 18Transplant outside: Feb 8 to Feb 22Plant for fall: Aug 25 to Sep 15
Start indoors: Jan 4 to Jan 18Transplant outside: Feb 15 to Mar 1Plant for fall: Aug 25 to Sep 15
Start indoors: Jan 18 to Feb 1Transplant outside: Mar 22 to Apr 5Sow outdoors: Mar 22 to Apr 5
Start indoors: Jan 18 to Feb 1Transplant outside: Mar 8 to Mar 22
Sow outdoors: Jan 18 to Feb 8Plant for fall: Sep 8 to Sep 29
Sow outdoors: Jan 18 to Feb 8Plant for fall: Oct 6 to Oct 27
Sow outdoors: Jan 25 to Mar 8Plant for fall: Oct 20 to Nov 10
Start indoors: Feb 1 to Feb 8Transplant outside: Mar 15 to Mar 22Sow outdoors: Mar 8 to Mar 22Plant for fall: Sep 15 to Sep 29
Start indoors: Feb 1 to Feb 8Sow outdoors: Mar 8 to Mar 22Plant for fall: Sep 22 to Oct 6
Start indoors: Feb 1 to Feb 8Sow outdoors: Mar 8 to Mar 22
Start indoors: Feb 1 to Feb 8Transplant outside: Mar 15 to Mar 29
Sow outdoors: Feb 8 to Mar 8Plant for fall: Sep 8 to Sep 22
Sow outdoors: Feb 8 to Mar 8Plant for fall: Sep 22 to Oct 6
Sow outdoors: Feb 8 to Mar 1
Sow outdoors: Feb 15 to Mar 15Plant for fall: Sep 22 to Oct 6
Sow outdoors: Feb 15 to Mar 8Plant for fall: Oct 6 to Oct 27
Sow outdoors: Mar 8 to Mar 29Plant for fall: Sep 15 to Sep 29
Sow outdoors: Mar 8 to Mar 22
Transplant outside: Mar 15 to Apr 5
Plant for fall: Nov 17 to Dec 22
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Spring Branch, TX
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Dec 7 – Dec 21 | Feb 1 – Feb 15 | — | — |
| Peppers | Dec 21 – Jan 4 | Mar 15 – Mar 29 | — | — |
| Eggplant | Dec 21 – Jan 4 | Mar 15 – Mar 29 | — | — |
| Tomatoes | Jan 4 – Jan 18 | Mar 8 – Mar 22 | — | — |
| Lettuce | Jan 4 – Jan 18 | Feb 8 – Feb 22 | Feb 1 – Mar 8 | Oct 6 – Nov 3 |
| Kale | Jan 4 – Jan 18 | Feb 1 – Feb 15 | Feb 1 – Feb 15 | Sep 22 – Oct 13 |
| Broccoli | Jan 4 – Jan 18 | Feb 15 – Mar 1 | — | Aug 25 – Sep 15 |
| Cabbage | Jan 4 – Jan 18 | Feb 8 – Feb 22 | — | Aug 25 – Sep 15 |
| Cauliflower | Jan 4 – Jan 18 | Feb 15 – Mar 1 | — | Aug 25 – Sep 15 |
| Okra | Jan 18 – Feb 1 | Mar 22 – Apr 5 | Mar 22 – Apr 5 | — |
| Basil | Jan 18 – Feb 1 | Mar 8 – Mar 22 | — | — |
| Peas | — | — | Jan 18 – Feb 8 | Sep 8 – Sep 29 |
| Spinach | — | — | Jan 18 – Feb 8 | Oct 6 – Oct 27 |
| Radishes | — | — | Jan 25 – Mar 8 | Oct 20 – Nov 10 |
| Cucumbers | Feb 1 – Feb 8 | Mar 15 – Mar 22 | Mar 8 – Mar 22 | Sep 15 – Sep 29 |
| Zucchini & Summer Squash | Feb 1 – Feb 8 | — | Mar 8 – Mar 22 | Sep 22 – Oct 6 |
| Winter Squash & Pumpkins | Feb 1 – Feb 8 | — | Mar 8 – Mar 22 | — |
| Melons & Watermelon | Feb 1 – Feb 8 | Mar 15 – Mar 29 | — | — |
| Carrots | — | — | Feb 8 – Mar 8 | Sep 8 – Sep 22 |
| Beets | — | — | Feb 8 – Mar 8 | Sep 22 – Oct 6 |
| Potatoes | — | — | Feb 8 – Mar 1 | — |
| Swiss Chard | — | — | Feb 15 – Mar 15 | Sep 22 – Oct 6 |
| Cilantro | — | — | Feb 15 – Mar 8 | Oct 6 – Oct 27 |
| Green Beans | — | — | Mar 8 – Mar 29 | Sep 15 – Sep 29 |
| Sweet Corn | — | — | Mar 8 – Mar 22 | — |
| Sweet Potatoes | — | Mar 15 – Apr 5 | — | — |
| Garlic | — | — | — | Nov 17 – Dec 22 |
Dates come from the median frost dates and common extension-service timing. Adjust for your soil temperature, microclimate and the varieties you grow.
About these dates
Based on 1991–2020 NOAA climate normals for the Canyon Dam, TX weather station, 19 km away (elevation 1,001 ft (305 m)).
Frost dates near Spring Branch
- Kendalia Mar 20 · Nov 10
- Canyon Lake Mar 1 · Dec 1
- Fischer Mar 1 · Dec 1
- Bulverde Feb 26 · Nov 28
- Blanco Mar 20 · Nov 10
- Bergheim Mar 15 · Nov 13
- Wimberley Mar 1 · Dec 1
- Boerne Mar 15 · Nov 13
- New Braunfels Mar 8 · Nov 18
- Hye Mar 22 · Nov 9
Frequently asked questions
When is the last frost in Spring Branch, TX?
The median last spring frost in Spring Branch, TX is March 1. There is still about a 10% chance of frost after March 22, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Spring Branch, TX?
The median first fall frost is December 1, with about a 10% chance of frost before November 9.
How long is the growing season in Spring Branch, TX?
About 275 days between the median last spring frost and first fall frost.
What planting zone is Spring Branch, TX?
Spring Branch, TX is in USDA hardiness zone 8b.