Mico, TX frost dates
Last spring frostFeb 18median date
First fall frostDec 9median date
Growing season294 daysfrost-free
Hardiness zone9aZone 9a
How Mico compares
- In 8 years out of 10, the last spring frost in Mico falls between January 18 and March 16, a 57-day window. The first fall frost falls between November 17 and January 13.
- The median last frost is 25 days earlier than the Texas median of Mar 15.
- Its 294-day growing season is longer than 95% of the 1,316 Texas places with a regular frost season (state median 245 days).
- The last frost is 13 days earlier 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 14 nights a year at or below 32°F.
- Compared with San Antonio, TX, 42 km away, the last frost here is 7 days earlier than there and the growing season is 18 days longer.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | January 18 |
| 50% (median) | February 18 |
| 10% (safe for tender plants) | March 16 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | November 17 |
| 50% (median) | December 9 |
| 90% (late) | January 13 |
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 Mico, TX
Mico, TX frost dates — last frost Feb 18, first frost Dec 9, zone 9a. whenisthelastfrost.com
Crop
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Start indoors: Nov 26 to Dec 10Transplant outside: Jan 21 to Feb 4
Start indoors: Dec 10 to Dec 24Transplant outside: Mar 4 to Mar 18
Start indoors: Dec 10 to Dec 24Transplant outside: Mar 4 to Mar 18
Start indoors: Dec 24 to Jan 7Start indoors: Dec 24 to Jan 7Transplant outside: Feb 25 to Mar 11
Start indoors: Dec 24 to Jan 7Start indoors: Dec 24 to Jan 7Transplant outside: Jan 28 to Feb 11Sow outdoors: Jan 21 to Feb 25Plant for fall: Oct 14 to Nov 11
Start indoors: Dec 24 to Jan 7Start indoors: Dec 24 to Jan 7Transplant outside: Jan 21 to Feb 4Sow outdoors: Jan 21 to Feb 4Plant for fall: Sep 30 to Oct 21
Start indoors: Dec 24 to Jan 7Start indoors: Dec 24 to Jan 7Transplant outside: Feb 4 to Feb 18Plant for fall: Sep 2 to Sep 23
Start indoors: Dec 24 to Jan 7Start indoors: Dec 24 to Jan 7Transplant outside: Jan 28 to Feb 11Plant for fall: Sep 2 to Sep 23
Start indoors: Dec 24 to Jan 7Start indoors: Dec 24 to Jan 7Transplant outside: Feb 4 to Feb 18Plant for fall: Sep 2 to Sep 23
Start indoors: Jan 7 to Jan 21Transplant outside: Mar 11 to Mar 25Sow outdoors: Mar 11 to Mar 25
Start indoors: Jan 7 to Jan 21Transplant outside: Feb 25 to Mar 11
Sow outdoors: Jan 7 to Jan 28Plant for fall: Sep 16 to Oct 7
Sow outdoors: Jan 7 to Jan 28Plant for fall: Oct 14 to Nov 4
Sow outdoors: Jan 14 to Feb 25Plant for fall: Oct 28 to Nov 18
Start indoors: Jan 21 to Jan 28Transplant outside: Mar 4 to Mar 11Sow outdoors: Feb 25 to Mar 11Plant for fall: Sep 23 to Oct 7
Start indoors: Jan 21 to Jan 28Sow outdoors: Feb 25 to Mar 11Plant for fall: Sep 30 to Oct 14
Start indoors: Jan 21 to Jan 28Sow outdoors: Feb 25 to Mar 11
Start indoors: Jan 21 to Jan 28Transplant outside: Mar 4 to Mar 18
Sow outdoors: Jan 28 to Feb 25Plant for fall: Sep 16 to Sep 30
Sow outdoors: Jan 28 to Feb 25Plant for fall: Sep 30 to Oct 14
Sow outdoors: Jan 28 to Feb 18
Sow outdoors: Feb 4 to Mar 4Plant for fall: Sep 30 to Oct 14
Sow outdoors: Feb 4 to Feb 25Plant for fall: Oct 14 to Nov 4
Sow outdoors: Feb 25 to Mar 18Plant for fall: Sep 23 to Oct 7
Sow outdoors: Feb 25 to Mar 11
Transplant outside: Mar 4 to Mar 25
Plant for fall: Nov 25 to Dec 30
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Mico, TX
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Nov 26 – Dec 10 | Jan 21 – Feb 4 | — | — |
| Peppers | Dec 10 – Dec 24 | Mar 4 – Mar 18 | — | — |
| Eggplant | Dec 10 – Dec 24 | Mar 4 – Mar 18 | — | — |
| Tomatoes | Dec 24 – Jan 7 | Feb 25 – Mar 11 | — | — |
| Lettuce | Dec 24 – Jan 7 | Jan 28 – Feb 11 | Jan 21 – Feb 25 | Oct 14 – Nov 11 |
| Kale | Dec 24 – Jan 7 | Jan 21 – Feb 4 | Jan 21 – Feb 4 | Sep 30 – Oct 21 |
| Broccoli | Dec 24 – Jan 7 | Feb 4 – Feb 18 | — | Sep 2 – Sep 23 |
| Cabbage | Dec 24 – Jan 7 | Jan 28 – Feb 11 | — | Sep 2 – Sep 23 |
| Cauliflower | Dec 24 – Jan 7 | Feb 4 – Feb 18 | — | Sep 2 – Sep 23 |
| Okra | Jan 7 – Jan 21 | Mar 11 – Mar 25 | Mar 11 – Mar 25 | — |
| Basil | Jan 7 – Jan 21 | Feb 25 – Mar 11 | — | — |
| Peas | — | — | Jan 7 – Jan 28 | Sep 16 – Oct 7 |
| Spinach | — | — | Jan 7 – Jan 28 | Oct 14 – Nov 4 |
| Radishes | — | — | Jan 14 – Feb 25 | Oct 28 – Nov 18 |
| Cucumbers | Jan 21 – Jan 28 | Mar 4 – Mar 11 | Feb 25 – Mar 11 | Sep 23 – Oct 7 |
| Zucchini & Summer Squash | Jan 21 – Jan 28 | — | Feb 25 – Mar 11 | Sep 30 – Oct 14 |
| Winter Squash & Pumpkins | Jan 21 – Jan 28 | — | Feb 25 – Mar 11 | — |
| Melons & Watermelon | Jan 21 – Jan 28 | Mar 4 – Mar 18 | — | — |
| Carrots | — | — | Jan 28 – Feb 25 | Sep 16 – Sep 30 |
| Beets | — | — | Jan 28 – Feb 25 | Sep 30 – Oct 14 |
| Potatoes | — | — | Jan 28 – Feb 18 | — |
| Swiss Chard | — | — | Feb 4 – Mar 4 | Sep 30 – Oct 14 |
| Cilantro | — | — | Feb 4 – Feb 25 | Oct 14 – Nov 4 |
| Green Beans | — | — | Feb 25 – Mar 18 | Sep 23 – Oct 7 |
| Sweet Corn | — | — | Feb 25 – Mar 11 | — |
| Sweet Potatoes | — | Mar 4 – Mar 25 | — | — |
| Garlic | — | — | — | Nov 25 – Dec 30 |
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 San Antonio/Seaworld, TX weather station, 24 km away (elevation 942 ft (287 m)).
Frost dates near Mico
- Rio Medina Feb 18 · Dec 9
- Pipe Creek Mar 15 · Nov 13
- Helotes Mar 15 · Nov 13
- Castroville Feb 24 · Dec 2
- Bandera Mar 16 · Nov 15
- La Coste Feb 24 · Dec 2
- Hondo Feb 28 · Nov 27
- Macdona Feb 22 · Dec 2
- Tarpley Mar 16 · Nov 15
- Atascosa Feb 24 · Dec 2
Frequently asked questions
When is the last frost in Mico, TX?
The median last spring frost in Mico, TX is February 18. There is still about a 10% chance of frost after March 16, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Mico, TX?
The median first fall frost is December 9, with about a 10% chance of frost before November 17.
How long is the growing season in Mico, TX?
About 294 days between the median last spring frost and first fall frost.
What planting zone is Mico, TX?
Mico, TX is in USDA hardiness zone 9a.