Frost dates for 74012 — Broken Arrow, OK
Last spring frostApr 1median date
First fall frostNov 1median date
Growing season214 daysfrost-free
Hardiness zone7bZone 7b
How Broken Arrow compares
- In 8 years out of 10, the last spring frost in Broken Arrow falls between March 12 and April 20, a 39-day window. The first fall frost falls between October 16 and November 13.
- The median last frost is 3 days earlier than the Oklahoma median of Apr 4.
- Its 214-day growing season is longer than 57% of the 582 Oklahoma places with a regular frost season (state median 211 days).
- The last frost is 4 days earlier than the zone 7b median of Apr 5. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 7b chart.
- The weather station records an average of 87 nights a year at or below 32°F.
- Compared with Tulsa, OK, 18 km away, the last frost here is 1 day later than there and the growing season is 4 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | March 12 |
| 50% (median) | April 1 |
| 10% (safe for tender plants) | April 20 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 16 |
| 50% (median) | November 1 |
| 90% (late) | November 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 Broken Arrow, OK
Frost dates for 74012 — Broken Arrow, OK — last frost Apr 1, first frost Nov 1, zone 7b. whenisthelastfrost.com
Crop
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Start indoors: Jan 7 to Jan 21Transplant outside: Mar 4 to Mar 18
Start indoors: Jan 21 to Feb 4Transplant outside: Apr 15 to Apr 29
Start indoors: Jan 21 to Feb 4Transplant outside: Apr 15 to Apr 29
Start indoors: Feb 4 to Feb 18Transplant outside: Apr 8 to Apr 22
Start indoors: Feb 4 to Feb 18Transplant outside: Mar 11 to Mar 25Sow outdoors: Mar 4 to Apr 8Plant for fall: Sep 6 to Oct 4
Start indoors: Feb 4 to Feb 18Transplant outside: Mar 4 to Mar 18Sow outdoors: Mar 4 to Mar 18Plant for fall: Aug 23 to Sep 13
Start indoors: Feb 4 to Feb 18Transplant outside: Mar 18 to Apr 1Plant for fall: Jul 26 to Aug 16
Start indoors: Feb 4 to Feb 18Transplant outside: Mar 11 to Mar 25Plant for fall: Jul 26 to Aug 16
Start indoors: Feb 4 to Feb 18Transplant outside: Mar 18 to Apr 1Plant for fall: Jul 26 to Aug 16
Start indoors: Feb 18 to Mar 4Transplant outside: Apr 22 to May 6Sow outdoors: Apr 22 to May 6
Start indoors: Feb 18 to Mar 4Transplant outside: Apr 8 to Apr 22
Sow outdoors: Feb 18 to Mar 11Plant for fall: Aug 9 to Aug 30
Sow outdoors: Feb 18 to Mar 11Plant for fall: Sep 6 to Sep 27
Sow outdoors: Feb 25 to Apr 8Plant for fall: Sep 20 to Oct 11
Start indoors: Mar 4 to Mar 11Transplant outside: Apr 15 to Apr 22Sow outdoors: Apr 8 to Apr 22Plant for fall: Aug 16 to Aug 30
Start indoors: Mar 4 to Mar 11Sow outdoors: Apr 8 to Apr 22Plant for fall: Aug 23 to Sep 6
Start indoors: Mar 4 to Mar 11Sow outdoors: Apr 8 to Apr 22
Start indoors: Mar 4 to Mar 11Transplant outside: Apr 15 to Apr 29
Sow outdoors: Mar 11 to Apr 8Plant for fall: Aug 9 to Aug 23
Sow outdoors: Mar 11 to Apr 8Plant for fall: Aug 23 to Sep 6
Sow outdoors: Mar 11 to Apr 1
Sow outdoors: Mar 18 to Apr 15Plant for fall: Aug 23 to Sep 6
Sow outdoors: Mar 18 to Apr 8Plant for fall: Sep 6 to Sep 27
Sow outdoors: Apr 8 to Apr 29Plant for fall: Aug 16 to Aug 30
Sow outdoors: Apr 8 to Apr 22
Transplant outside: Apr 15 to May 6
Plant for fall: Oct 18 to Nov 22
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Broken Arrow, OK
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 7 – Jan 21 | Mar 4 – Mar 18 | — | — |
| Peppers | Jan 21 – Feb 4 | Apr 15 – Apr 29 | — | — |
| Eggplant | Jan 21 – Feb 4 | Apr 15 – Apr 29 | — | — |
| Tomatoes | Feb 4 – Feb 18 | Apr 8 – Apr 22 | — | — |
| Lettuce | Feb 4 – Feb 18 | Mar 11 – Mar 25 | Mar 4 – Apr 8 | Sep 6 – Oct 4 |
| Kale | Feb 4 – Feb 18 | Mar 4 – Mar 18 | Mar 4 – Mar 18 | Aug 23 – Sep 13 |
| Broccoli | Feb 4 – Feb 18 | Mar 18 – Apr 1 | — | Jul 26 – Aug 16 |
| Cabbage | Feb 4 – Feb 18 | Mar 11 – Mar 25 | — | Jul 26 – Aug 16 |
| Cauliflower | Feb 4 – Feb 18 | Mar 18 – Apr 1 | — | Jul 26 – Aug 16 |
| Okra | Feb 18 – Mar 4 | Apr 22 – May 6 | Apr 22 – May 6 | — |
| Basil | Feb 18 – Mar 4 | Apr 8 – Apr 22 | — | — |
| Peas | — | — | Feb 18 – Mar 11 | Aug 9 – Aug 30 |
| Spinach | — | — | Feb 18 – Mar 11 | Sep 6 – Sep 27 |
| Radishes | — | — | Feb 25 – Apr 8 | Sep 20 – Oct 11 |
| Cucumbers | Mar 4 – Mar 11 | Apr 15 – Apr 22 | Apr 8 – Apr 22 | Aug 16 – Aug 30 |
| Zucchini & Summer Squash | Mar 4 – Mar 11 | — | Apr 8 – Apr 22 | Aug 23 – Sep 6 |
| Winter Squash & Pumpkins | Mar 4 – Mar 11 | — | Apr 8 – Apr 22 | — |
| Melons & Watermelon | Mar 4 – Mar 11 | Apr 15 – Apr 29 | — | — |
| Carrots | — | — | Mar 11 – Apr 8 | Aug 9 – Aug 23 |
| Beets | — | — | Mar 11 – Apr 8 | Aug 23 – Sep 6 |
| Potatoes | — | — | Mar 11 – Apr 1 | — |
| Swiss Chard | — | — | Mar 18 – Apr 15 | Aug 23 – Sep 6 |
| Cilantro | — | — | Mar 18 – Apr 8 | Sep 6 – Sep 27 |
| Green Beans | — | — | Apr 8 – Apr 29 | Aug 16 – Aug 30 |
| Sweet Corn | — | — | Apr 8 – Apr 22 | — |
| Sweet Potatoes | — | Apr 15 – May 6 | — | — |
| Garlic | — | — | — | Oct 18 – Nov 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 Bixby, OK weather station, 10 km away (elevation 604 ft (184 m)).
ZIP codes in Broken Arrow: 74011 74012 74013 74014
Frost dates near Broken Arrow
- Bixby Apr 1 · Nov 1
- Leonard Apr 1 · Nov 1
- Jenks Mar 30 · Nov 4
- Catoosa Mar 31 · Nov 4
- Coweta Apr 1 · Nov 1
- Tulsa Mar 31 · Nov 4
- Glenpool Mar 30 · Nov 4
- Oakhurst Mar 30 · Nov 4
Frequently asked questions
When is the last frost in Broken Arrow, OK?
The median last spring frost in Broken Arrow, OK is April 1. There is still about a 10% chance of frost after April 20, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Broken Arrow, OK?
The median first fall frost is November 1, with about a 10% chance of frost before October 16.
How long is the growing season in Broken Arrow, OK?
About 214 days between the median last spring frost and first fall frost.
What planting zone is Broken Arrow, OK?
Broken Arrow, OK is in USDA hardiness zone 7b.