Plano, TX frost dates
Last spring frostMar 7median date
First fall frostNov 21median date
Growing season259 daysfrost-free
Hardiness zone8bZone 8b
How Plano compares
- In 8 years out of 10, the last spring frost in Plano falls between February 18 and March 29, a 39-day window. The first fall frost falls between November 2 and December 9.
- The median last frost is 8 days earlier than the Texas median of Mar 15.
- Its 259-day growing season is longer than 70% of the 1,316 Texas places with a regular frost season (state median 245 days).
- The last frost is 9 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 35 nights a year at or below 32°F.
- Compared with Dallas, TX, 29 km away, the last frost here is 5 days later than there and the growing season is 13 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | February 18 |
| 50% (median) | March 7 |
| 10% (safe for tender plants) | March 29 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | November 2 |
| 50% (median) | November 21 |
| 90% (late) | December 9 |
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 Plano, TX
Plano, TX frost dates — last frost Mar 7, first frost Nov 21, zone 8b. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Dec 13 to Dec 27Transplant outside: Feb 7 to Feb 21
Start indoors: Dec 27 to Jan 10Start indoors: Dec 27 to Jan 10Transplant outside: Mar 21 to Apr 4
Start indoors: Dec 27 to Jan 10Start indoors: Dec 27 to Jan 10Transplant outside: Mar 21 to Apr 4
Start indoors: Jan 10 to Jan 24Transplant outside: Mar 14 to Mar 28
Start indoors: Jan 10 to Jan 24Transplant outside: Feb 14 to Feb 28Sow outdoors: Feb 7 to Mar 14Plant for fall: Sep 26 to Oct 24
Start indoors: Jan 10 to Jan 24Transplant outside: Feb 7 to Feb 21Sow outdoors: Feb 7 to Feb 21Plant for fall: Sep 12 to Oct 3
Start indoors: Jan 10 to Jan 24Transplant outside: Feb 21 to Mar 7Plant for fall: Aug 15 to Sep 5
Start indoors: Jan 10 to Jan 24Transplant outside: Feb 14 to Feb 28Plant for fall: Aug 15 to Sep 5
Start indoors: Jan 10 to Jan 24Transplant outside: Feb 21 to Mar 7Plant for fall: Aug 15 to Sep 5
Start indoors: Jan 24 to Feb 7Transplant outside: Mar 28 to Apr 11Sow outdoors: Mar 28 to Apr 11
Start indoors: Jan 24 to Feb 7Transplant outside: Mar 14 to Mar 28
Sow outdoors: Jan 24 to Feb 14Plant for fall: Aug 29 to Sep 19
Sow outdoors: Jan 24 to Feb 14Plant for fall: Sep 26 to Oct 17
Sow outdoors: Jan 31 to Mar 14Plant for fall: Oct 10 to Oct 31
Start indoors: Feb 7 to Feb 14Transplant outside: Mar 21 to Mar 28Sow outdoors: Mar 14 to Mar 28Plant for fall: Sep 5 to Sep 19
Start indoors: Feb 7 to Feb 14Sow outdoors: Mar 14 to Mar 28Plant for fall: Sep 12 to Sep 26
Start indoors: Feb 7 to Feb 14Sow outdoors: Mar 14 to Mar 28
Start indoors: Feb 7 to Feb 14Transplant outside: Mar 21 to Apr 4
Sow outdoors: Feb 14 to Mar 14Plant for fall: Aug 29 to Sep 12
Sow outdoors: Feb 14 to Mar 14Plant for fall: Sep 12 to Sep 26
Sow outdoors: Feb 14 to Mar 7
Sow outdoors: Feb 21 to Mar 21Plant for fall: Sep 12 to Sep 26
Sow outdoors: Feb 21 to Mar 14Plant for fall: Sep 26 to Oct 17
Sow outdoors: Mar 14 to Apr 4Plant for fall: Sep 5 to Sep 19
Sow outdoors: Mar 14 to Mar 28
Transplant outside: Mar 21 to Apr 11
Plant for fall: Nov 7 to Dec 12
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Plano, TX
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Dec 13 – Dec 27 | Feb 7 – Feb 21 | — | — |
| Peppers | Dec 27 – Jan 10 | Mar 21 – Apr 4 | — | — |
| Eggplant | Dec 27 – Jan 10 | Mar 21 – Apr 4 | — | — |
| Tomatoes | Jan 10 – Jan 24 | Mar 14 – Mar 28 | — | — |
| Lettuce | Jan 10 – Jan 24 | Feb 14 – Feb 28 | Feb 7 – Mar 14 | Sep 26 – Oct 24 |
| Kale | Jan 10 – Jan 24 | Feb 7 – Feb 21 | Feb 7 – Feb 21 | Sep 12 – Oct 3 |
| Broccoli | Jan 10 – Jan 24 | Feb 21 – Mar 7 | — | Aug 15 – Sep 5 |
| Cabbage | Jan 10 – Jan 24 | Feb 14 – Feb 28 | — | Aug 15 – Sep 5 |
| Cauliflower | Jan 10 – Jan 24 | Feb 21 – Mar 7 | — | Aug 15 – Sep 5 |
| Okra | Jan 24 – Feb 7 | Mar 28 – Apr 11 | Mar 28 – Apr 11 | — |
| Basil | Jan 24 – Feb 7 | Mar 14 – Mar 28 | — | — |
| Peas | — | — | Jan 24 – Feb 14 | Aug 29 – Sep 19 |
| Spinach | — | — | Jan 24 – Feb 14 | Sep 26 – Oct 17 |
| Radishes | — | — | Jan 31 – Mar 14 | Oct 10 – Oct 31 |
| Cucumbers | Feb 7 – Feb 14 | Mar 21 – Mar 28 | Mar 14 – Mar 28 | Sep 5 – Sep 19 |
| Zucchini & Summer Squash | Feb 7 – Feb 14 | — | Mar 14 – Mar 28 | Sep 12 – Sep 26 |
| Winter Squash & Pumpkins | Feb 7 – Feb 14 | — | Mar 14 – Mar 28 | — |
| Melons & Watermelon | Feb 7 – Feb 14 | Mar 21 – Apr 4 | — | — |
| Carrots | — | — | Feb 14 – Mar 14 | Aug 29 – Sep 12 |
| Beets | — | — | Feb 14 – Mar 14 | Sep 12 – Sep 26 |
| Potatoes | — | — | Feb 14 – Mar 7 | — |
| Swiss Chard | — | — | Feb 21 – Mar 21 | Sep 12 – Sep 26 |
| Cilantro | — | — | Feb 21 – Mar 14 | Sep 26 – Oct 17 |
| Green Beans | — | — | Mar 14 – Apr 4 | Sep 5 – Sep 19 |
| Sweet Corn | — | — | Mar 14 – Mar 28 | — |
| Sweet Potatoes | — | Mar 21 – Apr 11 | — | — |
| Garlic | — | — | — | Nov 7 – Dec 12 |
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 Richardson, TX weather station, 5 km away (elevation 679 ft (207 m)).
ZIP codes in Plano: 75023 75024 75025 75026 75074 75075 75086 75093 75094
Frost dates near Plano
- Allen Mar 18 · Nov 11
- Sachse Mar 10 · Nov 19
- Addison Mar 7 · Nov 21
- Garland Mar 7 · Nov 21
- Carrollton Mar 7 · Nov 21
- The Colony Mar 7 · Nov 21
- Richardson Mar 2 · Nov 29
- Wylie Mar 10 · Nov 19
- Frisco Mar 7 · Nov 21
- Mckinney Mar 17 · Nov 15
Frequently asked questions
When is the last frost in Plano, TX?
The median last spring frost in Plano, TX is March 7. There is still about a 10% chance of frost after March 29, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Plano, TX?
The median first fall frost is November 21, with about a 10% chance of frost before November 2.
How long is the growing season in Plano, TX?
About 259 days between the median last spring frost and first fall frost.
What planting zone is Plano, TX?
Plano, TX is in USDA hardiness zone 8b.