Oklahoma City, Oklahoma: planting zone & frost dates
Oklahoma City is in USDA plant hardiness zone 7b, where the average coldest winter night reaches 5 to 10°F (-15.0 to -12.2°C). The typical last spring frost is around Apr 10 and the first fall frost around Oct 29.
Frost dates
| Probability | Last spring frost (32°F) | First fall frost (32°F) |
|---|---|---|
| Safer (10% risk) | Apr 20 | Oct 21 |
| Typical planning date (30% risk) | Apr 10 | Oct 29 |
| Median (50%) | Apr 4 | Nov 2 |
How to read this: after the spring "10% risk" date, a 32°F frost happens in only about 1 year in 10. In fall, the "10% risk" date is the early end — a frost before it happens about 1 year in 10.
Frost data comes from NOAA station OKLAHOMA CITY WILL ROGERS AP, OK (USW00013967), 7.3 mi (11.7 km) from the city center and 89 ft higher than the city center (+27 m). Record used for the 1991–2020 normals: 29 years.
Hardiness zone across Oklahoma City
All 50 ZIP codes covering Oklahoma City are in zone 7b.
ZIP codes in Oklahoma City and their zones
| ZIP | Zone | Share of city land |
|---|---|---|
| 73099 | 7b | 12.9% |
| 73165 | 7b | 6.3% |
| 73064 | 7b | 6.2% |
| 74857 | 7b | 5.5% |
| 73049 | 7b | 5.4% |
| 73013 | 7b | 3.3% |
| 73020 | 7b | 3.3% |
| 73170 | 7b | 3.3% |
| 73150 | 7b | 3.1% |
| 73159 | 7b | 2.3% |
| 73173 | 7b | 2.2% |
| 73054 | 7b | 2.1% |
| 73129 | 7b | 2.1% |
| 73084 | 7b | 2.0% |
| 73131 | 7b | 2.0% |
| 73127 | 7b | 1.9% |
| 73179 | 7b | 1.9% |
| 73135 | 7b | 1.8% |
| 73012 | 7b | 1.6% |
| 73114 | 7b | 1.6% |
| 73111 | 7b | 1.4% |
| 73078 | 7b | 1.3% |
| 73112 | 7b | 1.3% |
| 73120 | 7b | 1.3% |
| 73142 | 7b | 1.3% |
| 73107 | 7b | 1.2% |
| 73108 | 7b | 1.2% |
| 73128 | 7b | 1.2% |
| 73141 | 7b | 1.2% |
| 73162 | 7b | 1.2% |
| 73169 | 7b | 1.2% |
| 73119 | 7b | 1.1% |
| 73121 | 7b | 1.1% |
| 73132 | 7b | 1.1% |
| 74851 | 7b | 1.1% |
| 73109 | 7b | 0.9% |
| 73149 | 7b | 0.9% |
| 73117 | 7b | 0.8% |
| 73118 | 7b | 0.8% |
| 73105 | 7b | 0.7% |
| 73116 | 7b | 0.7% |
| 73134 | 7b | 0.7% |
| 73139 | 7b | 0.7% |
| 73106 | 7b | 0.5% |
| 73151 | 7b | 0.5% |
| 73104 | 7b | 0.3% |
| 73097 | 7b | 0.2% |
| 73103 | 7b | 0.2% |
| 73145 | 7b | 0.2% |
| 73102 | 7b | 0.1% |
Vegetable planting calendar for Oklahoma City
Dates are counted from the 30%-risk frost dates above (last frost Apr 10, first frost Oct 29). Shift a week later in cold spots or low-lying ground.
| Crop | Start indoors | Transplant / plant out | Direct sow | Fall crop sow/plant |
|---|---|---|---|---|
| Tomato | Feb 13 – Feb 27 | Apr 17 – May 1 | — | — |
| Pepper | Jan 30 – Feb 13 | Apr 24 – May 8 | — | — |
| Lettuce | Feb 27 – Mar 13 | Mar 27 – Apr 17 | Mar 13 – Apr 24 | Aug 20 – Sep 17 |
| Green Beans | — | — | Apr 17 – May 22 | Aug 6 – Aug 20 |
| Sweet Corn | — | — | Apr 17 – May 15 | — |
| Zucchini & Summer Squash | Mar 13 – Mar 20 | Apr 17 – May 1 | Apr 17 – May 8 | Aug 6 – Aug 20 |
| Cucumber | Mar 13 – Mar 20 | Apr 24 – May 1 | Apr 17 – May 8 | Aug 6 – Aug 20 |
| Carrot | — | — | Mar 20 – Apr 24 | Aug 6 – Aug 20 |
| Onion | Jan 16 – Jan 30 | Mar 13 – Mar 27 | — | — |
| Potato | — | Mar 13 – Apr 3 | — | — |
| Basil | Feb 27 – Mar 13 | Apr 24 – May 8 | Apr 24 – May 15 | — |
| Spinach | — | — | Feb 27 – Mar 27 | Sep 3 – Oct 1 |
| Kale | Feb 13 – Feb 27 | Mar 13 – Apr 3 | Mar 13 – Apr 3 | Aug 20 – Sep 17 |
| Broccoli | Feb 13 – Feb 27 | Mar 27 – Apr 17 | — | Aug 6 – Aug 20 |
| Peas | — | — | Feb 27 – Mar 20 | Aug 20 – Sep 3 |
| Eggplant | Jan 30 – Feb 13 | Apr 24 – May 8 | — | — |
| Cabbage | Feb 13 – Feb 27 | Mar 13 – Mar 27 | — | Aug 6 – Aug 20 |
| Radish | — | — | Mar 6 – Apr 24 | Sep 17 – Oct 15 |
| Strawberry | — | Mar 13 – Apr 3 | — | — |
| Beets | — | — | Mar 20 – May 1 | Aug 20 – Sep 3 |
Nearby cities in Oklahoma
- Edmond — zone 7b, last frost Apr 18, first frost Oct 23
- Norman — zone 7b, last frost Apr 9, first frost Oct 29
- Lawton — zone 7b, last frost Apr 3, first frost Nov 1
- Tulsa — zone 7b, last frost Apr 5, first frost Oct 30
- Broken Arrow — zone 7b, last frost Apr 8, first frost Oct 26
More: all Oklahoma cities · other zone 7b cities: New York, NY, Philadelphia, PA, Nashville, TN, Washington, DC, Baltimore, MD, Albuquerque, NM, Tulsa, OK, Newark, NJ