Frost dates for 74129 — Tulsa, OK
How Tulsa compares
- In 8 years out of 10, the last spring frost in Tulsa falls between March 11 and April 15, a 35-day window. The first fall frost falls between October 20 and November 19.
- The median last frost is 4 days earlier than the Oklahoma median of Apr 4.
- Its 218-day growing season is longer than 76% of the 582 Oklahoma places with a regular frost season (state median 211 days).
- The last frost is 5 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 72 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | March 11 |
| 50% (median) | March 31 |
| 10% (safe for tender plants) | April 15 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 20 |
| 50% (median) | November 4 |
| 90% (late) | November 19 |
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 Tulsa, OK
Frost dates for 74129 — Tulsa, OK — last frost Mar 31, first frost Nov 4, zone 7b. whenisthelastfrost.com
When to plant vegetables in Tulsa, OK
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 6 – Jan 20 | Mar 3 – Mar 17 | — | — |
| Peppers | Jan 20 – Feb 3 | Apr 14 – Apr 28 | — | — |
| Eggplant | Jan 20 – Feb 3 | Apr 14 – Apr 28 | — | — |
| Tomatoes | Feb 3 – Feb 17 | Apr 7 – Apr 21 | — | — |
| Lettuce | Feb 3 – Feb 17 | Mar 10 – Mar 24 | Mar 3 – Apr 7 | Sep 9 – Oct 7 |
| Kale | Feb 3 – Feb 17 | Mar 3 – Mar 17 | Mar 3 – Mar 17 | Aug 26 – Sep 16 |
| Broccoli | Feb 3 – Feb 17 | Mar 17 – Mar 31 | — | Jul 29 – Aug 19 |
| Cabbage | Feb 3 – Feb 17 | Mar 10 – Mar 24 | — | Jul 29 – Aug 19 |
| Cauliflower | Feb 3 – Feb 17 | Mar 17 – Mar 31 | — | Jul 29 – Aug 19 |
| Okra | Feb 17 – Mar 3 | Apr 21 – May 5 | Apr 21 – May 5 | — |
| Basil | Feb 17 – Mar 3 | Apr 7 – Apr 21 | — | — |
| Peas | — | — | Feb 17 – Mar 10 | Aug 12 – Sep 2 |
| Spinach | — | — | Feb 17 – Mar 10 | Sep 9 – Sep 30 |
| Radishes | — | — | Feb 24 – Apr 7 | Sep 23 – Oct 14 |
| Cucumbers | Mar 3 – Mar 10 | Apr 14 – Apr 21 | Apr 7 – Apr 21 | Aug 19 – Sep 2 |
| Zucchini & Summer Squash | Mar 3 – Mar 10 | — | Apr 7 – Apr 21 | Aug 26 – Sep 9 |
| Winter Squash & Pumpkins | Mar 3 – Mar 10 | — | Apr 7 – Apr 21 | — |
| Melons & Watermelon | Mar 3 – Mar 10 | Apr 14 – Apr 28 | — | — |
| Carrots | — | — | Mar 10 – Apr 7 | Aug 12 – Aug 26 |
| Beets | — | — | Mar 10 – Apr 7 | Aug 26 – Sep 9 |
| Potatoes | — | — | Mar 10 – Mar 31 | — |
| Swiss Chard | — | — | Mar 17 – Apr 14 | Aug 26 – Sep 9 |
| Cilantro | — | — | Mar 17 – Apr 7 | Sep 9 – Sep 30 |
| Green Beans | — | — | Apr 7 – Apr 28 | Aug 19 – Sep 2 |
| Sweet Corn | — | — | Apr 7 – Apr 21 | — |
| Sweet Potatoes | — | Apr 14 – May 5 | — | — |
| Garlic | — | — | — | Oct 21 – Nov 25 |
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 Tulsa Intl Ap, OK weather station, 8 km away (elevation 650 ft (198 m)).
ZIP codes in Tulsa: 74101 74102 74103 74104 74105 74106 74107 74108 74110 74112 74114 74115 74116 74117 74119 74120 74121 74126 74127 74128 74129 74130 74131 74132 74133 74134 74135 74136 74137 74141 74145 74146 74147 74148 74149 74150 74152 74153 74155 74156 74157 74158 74159 74169 74170 74171 74172 74182 74186 74187 74192 74193
Frost dates near Tulsa
- Broken Arrow Apr 1 · Nov 1
- Catoosa Mar 31 · Nov 4
- Jenks Mar 30 · Nov 4
- Owasso Mar 31 · Nov 4
- Oakhurst Mar 30 · Nov 4
- Bixby Apr 1 · Nov 1
- Sperry Mar 31 · Nov 4
- Glenpool Mar 30 · Nov 4
Frequently asked questions
When is the last frost in Tulsa, OK?
The median last spring frost in Tulsa, OK is March 31. There is still about a 10% chance of frost after April 15, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Tulsa, OK?
The median first fall frost is November 4, with about a 10% chance of frost before October 20.
How long is the growing season in Tulsa, OK?
About 218 days between the median last spring frost and first fall frost.
What planting zone is Tulsa, OK?
Tulsa, OK is in USDA hardiness zone 7b.