Geronimo, TX frost dates
Last spring frostMar 8median date
First fall frostNov 18median date
Growing season255 daysfrost-free
Hardiness zone9aZone 9a
How Geronimo compares
- In 8 years out of 10, the last spring frost in Geronimo falls between February 17 and April 1, a 43-day window. The first fall frost falls between November 2 and December 10.
- The median last frost is 7 days earlier than the Texas median of Mar 15.
- Its 255-day growing season is longer than 65% of the 1,316 Texas places with a regular frost season (state median 245 days).
- The last frost is 5 days later than the zone 9a median of Mar 3. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 9a chart.
- The weather station records an average of 32 nights a year at or below 32°F.
- Geronimo shares its weather station with New Braunfels, TX, 21 km away, so the two have the same frost dates.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | February 17 |
| 50% (median) | March 8 |
| 10% (safe for tender plants) | April 1 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | November 2 |
| 50% (median) | November 18 |
| 90% (late) | December 10 |
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 Geronimo, TX
Geronimo, TX frost dates — last frost Mar 8, first frost Nov 18, zone 9a. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Dec 14 to Dec 28Transplant outside: Feb 8 to Feb 22
Start indoors: Dec 28 to Jan 11Start indoors: Dec 28 to Jan 11Transplant outside: Mar 22 to Apr 5
Start indoors: Dec 28 to Jan 11Start indoors: Dec 28 to Jan 11Transplant outside: Mar 22 to Apr 5
Start indoors: Jan 11 to Jan 25Transplant outside: Mar 15 to Mar 29
Start indoors: Jan 11 to Jan 25Transplant outside: Feb 15 to Mar 1Sow outdoors: Feb 8 to Mar 15Plant for fall: Sep 23 to Oct 21
Start indoors: Jan 11 to Jan 25Transplant outside: Feb 8 to Feb 22Sow outdoors: Feb 8 to Feb 22Plant for fall: Sep 9 to Sep 30
Start indoors: Jan 11 to Jan 25Transplant outside: Feb 22 to Mar 8Plant for fall: Aug 12 to Sep 2
Start indoors: Jan 11 to Jan 25Transplant outside: Feb 15 to Mar 1Plant for fall: Aug 12 to Sep 2
Start indoors: Jan 11 to Jan 25Transplant outside: Feb 22 to Mar 8Plant for fall: Aug 12 to Sep 2
Start indoors: Jan 25 to Feb 8Transplant outside: Mar 29 to Apr 12Sow outdoors: Mar 29 to Apr 12
Start indoors: Jan 25 to Feb 8Transplant outside: Mar 15 to Mar 29
Sow outdoors: Jan 25 to Feb 15Plant for fall: Aug 26 to Sep 16
Sow outdoors: Jan 25 to Feb 15Plant for fall: Sep 23 to Oct 14
Sow outdoors: Feb 1 to Mar 15Plant for fall: Oct 7 to Oct 28
Start indoors: Feb 8 to Feb 15Transplant outside: Mar 22 to Mar 29Sow outdoors: Mar 15 to Mar 29Plant for fall: Sep 2 to Sep 16
Start indoors: Feb 8 to Feb 15Sow outdoors: Mar 15 to Mar 29Plant for fall: Sep 9 to Sep 23
Start indoors: Feb 8 to Feb 15Sow outdoors: Mar 15 to Mar 29
Start indoors: Feb 8 to Feb 15Transplant outside: Mar 22 to Apr 5
Sow outdoors: Feb 15 to Mar 15Plant for fall: Aug 26 to Sep 9
Sow outdoors: Feb 15 to Mar 15Plant for fall: Sep 9 to Sep 23
Sow outdoors: Feb 15 to Mar 8
Sow outdoors: Feb 22 to Mar 22Plant for fall: Sep 9 to Sep 23
Sow outdoors: Feb 22 to Mar 15Plant for fall: Sep 23 to Oct 14
Sow outdoors: Mar 15 to Apr 5Plant for fall: Sep 2 to Sep 16
Sow outdoors: Mar 15 to Mar 29
Transplant outside: Mar 22 to Apr 12
Plant for fall: Nov 4 to Dec 9
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Geronimo, TX
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Dec 14 – Dec 28 | Feb 8 – Feb 22 | — | — |
| Peppers | Dec 28 – Jan 11 | Mar 22 – Apr 5 | — | — |
| Eggplant | Dec 28 – Jan 11 | Mar 22 – Apr 5 | — | — |
| Tomatoes | Jan 11 – Jan 25 | Mar 15 – Mar 29 | — | — |
| Lettuce | Jan 11 – Jan 25 | Feb 15 – Mar 1 | Feb 8 – Mar 15 | Sep 23 – Oct 21 |
| Kale | Jan 11 – Jan 25 | Feb 8 – Feb 22 | Feb 8 – Feb 22 | Sep 9 – Sep 30 |
| Broccoli | Jan 11 – Jan 25 | Feb 22 – Mar 8 | — | Aug 12 – Sep 2 |
| Cabbage | Jan 11 – Jan 25 | Feb 15 – Mar 1 | — | Aug 12 – Sep 2 |
| Cauliflower | Jan 11 – Jan 25 | Feb 22 – Mar 8 | — | Aug 12 – Sep 2 |
| Okra | Jan 25 – Feb 8 | Mar 29 – Apr 12 | Mar 29 – Apr 12 | — |
| Basil | Jan 25 – Feb 8 | Mar 15 – Mar 29 | — | — |
| Peas | — | — | Jan 25 – Feb 15 | Aug 26 – Sep 16 |
| Spinach | — | — | Jan 25 – Feb 15 | Sep 23 – Oct 14 |
| Radishes | — | — | Feb 1 – Mar 15 | Oct 7 – Oct 28 |
| Cucumbers | Feb 8 – Feb 15 | Mar 22 – Mar 29 | Mar 15 – Mar 29 | Sep 2 – Sep 16 |
| Zucchini & Summer Squash | Feb 8 – Feb 15 | — | Mar 15 – Mar 29 | Sep 9 – Sep 23 |
| Winter Squash & Pumpkins | Feb 8 – Feb 15 | — | Mar 15 – Mar 29 | — |
| Melons & Watermelon | Feb 8 – Feb 15 | Mar 22 – Apr 5 | — | — |
| Carrots | — | — | Feb 15 – Mar 15 | Aug 26 – Sep 9 |
| Beets | — | — | Feb 15 – Mar 15 | Sep 9 – Sep 23 |
| Potatoes | — | — | Feb 15 – Mar 8 | — |
| Swiss Chard | — | — | Feb 22 – Mar 22 | Sep 9 – Sep 23 |
| Cilantro | — | — | Feb 22 – Mar 15 | Sep 23 – Oct 14 |
| Green Beans | — | — | Mar 15 – Apr 5 | Sep 2 – Sep 16 |
| Sweet Corn | — | — | Mar 15 – Mar 29 | — |
| Sweet Potatoes | — | Mar 22 – Apr 12 | — | — |
| Garlic | — | — | — | Nov 4 – Dec 9 |
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 New Braunfels, TX weather station, 17 km away (elevation 722 ft (220 m)).
Frost dates near Geronimo
- Mc Queeney Mar 1 · Nov 26
- Seguin Mar 1 · Nov 26
- Marion Mar 8 · Nov 18
- Cibolo Feb 21 · Dec 5
- Saint Hedwig Feb 21 · Dec 5
- Jbsa Randolph Mar 7 · Nov 22
- New Braunfels Mar 8 · Nov 18
- La Vernia Mar 6 · Nov 20
- Schertz Feb 21 · Dec 5
- Universal City Feb 21 · Dec 5
Frequently asked questions
When is the last frost in Geronimo, TX?
The median last spring frost in Geronimo, TX is March 8. There is still about a 10% chance of frost after April 1, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Geronimo, TX?
The median first fall frost is November 18, with about a 10% chance of frost before November 2.
How long is the growing season in Geronimo, TX?
About 255 days between the median last spring frost and first fall frost.
What planting zone is Geronimo, TX?
Geronimo, TX is in USDA hardiness zone 9a.