Justin, TX frost dates
Last spring frostMar 12median date
First fall frostNov 17median date
Growing season250 daysfrost-free
Hardiness zone8bZone 8b
How Justin compares
- In 8 years out of 10, the last spring frost in Justin falls between February 21 and April 3, a 41-day window. The first fall frost falls between October 31 and December 5.
- The median last frost is 3 days earlier than the Texas median of Mar 15.
- Its 250-day growing season is longer than 58% of the 1,316 Texas places with a regular frost season (state median 245 days).
- The last frost is 4 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 45 nights a year at or below 32°F.
- Compared with Flower Mound, TX, 19 km away, the last frost here is 1 day earlier than there and the growing season is 2 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | February 21 |
| 50% (median) | March 12 |
| 10% (safe for tender plants) | April 3 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 31 |
| 50% (median) | November 17 |
| 90% (late) | December 5 |
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 Justin, TX
Justin, TX frost dates — last frost Mar 12, first frost Nov 17, zone 8b. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Dec 18 to Jan 1Start indoors: Dec 18 to Jan 1Transplant outside: Feb 12 to Feb 26
Start indoors: Jan 1 to Jan 15Transplant outside: Mar 26 to Apr 9
Start indoors: Jan 1 to Jan 15Transplant outside: Mar 26 to Apr 9
Start indoors: Jan 15 to Jan 29Transplant outside: Mar 19 to Apr 2
Start indoors: Jan 15 to Jan 29Transplant outside: Feb 19 to Mar 5Sow outdoors: Feb 12 to Mar 19Plant for fall: Sep 22 to Oct 20
Start indoors: Jan 15 to Jan 29Transplant outside: Feb 12 to Feb 26Sow outdoors: Feb 12 to Feb 26Plant for fall: Sep 8 to Sep 29
Start indoors: Jan 15 to Jan 29Transplant outside: Feb 26 to Mar 12Plant for fall: Aug 11 to Sep 1
Start indoors: Jan 15 to Jan 29Transplant outside: Feb 19 to Mar 5Plant for fall: Aug 11 to Sep 1
Start indoors: Jan 15 to Jan 29Transplant outside: Feb 26 to Mar 12Plant for fall: Aug 11 to Sep 1
Start indoors: Jan 29 to Feb 12Transplant outside: Apr 2 to Apr 16Sow outdoors: Apr 2 to Apr 16
Start indoors: Jan 29 to Feb 12Transplant outside: Mar 19 to Apr 2
Sow outdoors: Jan 29 to Feb 19Plant for fall: Aug 25 to Sep 15
Sow outdoors: Jan 29 to Feb 19Plant for fall: Sep 22 to Oct 13
Sow outdoors: Feb 5 to Mar 19Plant for fall: Oct 6 to Oct 27
Start indoors: Feb 12 to Feb 19Transplant outside: Mar 26 to Apr 2Sow outdoors: Mar 19 to Apr 2Plant for fall: Sep 1 to Sep 15
Start indoors: Feb 12 to Feb 19Sow outdoors: Mar 19 to Apr 2Plant for fall: Sep 8 to Sep 22
Start indoors: Feb 12 to Feb 19Sow outdoors: Mar 19 to Apr 2
Start indoors: Feb 12 to Feb 19Transplant outside: Mar 26 to Apr 9
Sow outdoors: Feb 19 to Mar 19Plant for fall: Aug 25 to Sep 8
Sow outdoors: Feb 19 to Mar 19Plant for fall: Sep 8 to Sep 22
Sow outdoors: Feb 19 to Mar 12
Sow outdoors: Feb 26 to Mar 26Plant for fall: Sep 8 to Sep 22
Sow outdoors: Feb 26 to Mar 19Plant for fall: Sep 22 to Oct 13
Sow outdoors: Mar 19 to Apr 9Plant for fall: Sep 1 to Sep 15
Sow outdoors: Mar 19 to Apr 2
Transplant outside: Mar 26 to Apr 16
Plant for fall: Nov 3 to Dec 8
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Justin, TX
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Dec 18 – Jan 1 | Feb 12 – Feb 26 | — | — |
| Peppers | Jan 1 – Jan 15 | Mar 26 – Apr 9 | — | — |
| Eggplant | Jan 1 – Jan 15 | Mar 26 – Apr 9 | — | — |
| Tomatoes | Jan 15 – Jan 29 | Mar 19 – Apr 2 | — | — |
| Lettuce | Jan 15 – Jan 29 | Feb 19 – Mar 5 | Feb 12 – Mar 19 | Sep 22 – Oct 20 |
| Kale | Jan 15 – Jan 29 | Feb 12 – Feb 26 | Feb 12 – Feb 26 | Sep 8 – Sep 29 |
| Broccoli | Jan 15 – Jan 29 | Feb 26 – Mar 12 | — | Aug 11 – Sep 1 |
| Cabbage | Jan 15 – Jan 29 | Feb 19 – Mar 5 | — | Aug 11 – Sep 1 |
| Cauliflower | Jan 15 – Jan 29 | Feb 26 – Mar 12 | — | Aug 11 – Sep 1 |
| Okra | Jan 29 – Feb 12 | Apr 2 – Apr 16 | Apr 2 – Apr 16 | — |
| Basil | Jan 29 – Feb 12 | Mar 19 – Apr 2 | — | — |
| Peas | — | — | Jan 29 – Feb 19 | Aug 25 – Sep 15 |
| Spinach | — | — | Jan 29 – Feb 19 | Sep 22 – Oct 13 |
| Radishes | — | — | Feb 5 – Mar 19 | Oct 6 – Oct 27 |
| Cucumbers | Feb 12 – Feb 19 | Mar 26 – Apr 2 | Mar 19 – Apr 2 | Sep 1 – Sep 15 |
| Zucchini & Summer Squash | Feb 12 – Feb 19 | — | Mar 19 – Apr 2 | Sep 8 – Sep 22 |
| Winter Squash & Pumpkins | Feb 12 – Feb 19 | — | Mar 19 – Apr 2 | — |
| Melons & Watermelon | Feb 12 – Feb 19 | Mar 26 – Apr 9 | — | — |
| Carrots | — | — | Feb 19 – Mar 19 | Aug 25 – Sep 8 |
| Beets | — | — | Feb 19 – Mar 19 | Sep 8 – Sep 22 |
| Potatoes | — | — | Feb 19 – Mar 12 | — |
| Swiss Chard | — | — | Feb 26 – Mar 26 | Sep 8 – Sep 22 |
| Cilantro | — | — | Feb 26 – Mar 19 | Sep 22 – Oct 13 |
| Green Beans | — | — | Mar 19 – Apr 9 | Sep 1 – Sep 15 |
| Sweet Corn | — | — | Mar 19 – Apr 2 | — |
| Sweet Potatoes | — | Mar 26 – Apr 16 | — | — |
| Garlic | — | — | — | Nov 3 – Dec 8 |
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 Ft Worth Alliance Ap, TX weather station, 11 km away (elevation 686 ft (209 m)).
Frost dates near Justin
- Roanoke Mar 12 · Nov 17
- Ponder Mar 24 · Nov 7
- Haslet Mar 12 · Nov 17
- Argyle Mar 13 · Nov 20
- Rhome Mar 12 · Nov 17
- Keller Mar 12 · Nov 17
- Newark Mar 12 · Nov 17
- Flower Mound Mar 13 · Nov 20
- Southlake Mar 14 · Nov 17
- Krum Mar 24 · Nov 7
Frequently asked questions
When is the last frost in Justin, TX?
The median last spring frost in Justin, TX is March 12. There is still about a 10% chance of frost after April 3, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Justin, TX?
The median first fall frost is November 17, with about a 10% chance of frost before October 31.
How long is the growing season in Justin, TX?
About 250 days between the median last spring frost and first fall frost.
What planting zone is Justin, TX?
Justin, TX is in USDA hardiness zone 8b.