Oklahoma frost dates
Typical and safer frost dates for 2 cities in Oklahoma, each from its nearest NOAA station. Elevation matters here as much as latitude, so check the city closest to you.
| City | Last frost · typical | Last frost · safer | First frost · typical | Frost-free days |
|---|---|---|---|---|
| Oklahoma City | Apr 4 | Apr 20 | Nov 2 | 213 |
| Tulsa | Mar 31 | Apr 15 | Nov 4 | 220 |
Planting calendar for Oklahoma City
The largest city we cover in Oklahoma. Other cities: see their own page.
Frost dates
Apr 4
Last spring frost, typical
In half of the years that freeze, the last frost comes later.
Safer date: Apr 20. Only 1 freeze year in 10 has a frost after this.
Nov 2
First fall frost, typical
In half of the years that freeze, it comes earlier.
Early date: Oct 21. Only 1 freeze year in 10 freezes before this.
213
Days, typical frost-free season
From NOAA’s 1991–2020 climate normals for this station.
What to plant right now
As of Nov 9, 2026
Typical frost-free season: 213 days. Station: Oklahoma City Will Rogers Airport, OK, 12 km away. Source: NOAA NCEI U.S. Climate Normals 1991–2020 (32°F threshold).
February
The next window opens in February.
Peppertender
Next: start indoors from Feb 9
- Start indoors
- Feb 9 – Feb 23
- Transplant outdoors
- Apr 20 – May 4
Parsleyhalf hardy
Next: start indoors from Feb 9
- Start indoors
- Feb 9 – Feb 23
- Sow outdoors
- Apr 6 – Apr 20
Tomatotender
Next: start indoors from Feb 23
- Start indoors
- Feb 23 – Mar 9
- Transplant outdoors
- Apr 20 – May 4
Eggplanttender
Next: start indoors from Feb 23
- Start indoors
- Feb 23 – Mar 9
- Transplant outdoors
- Apr 20 – May 4
Broccolihardy
Next: start indoors from Feb 23
- Start indoors
- Feb 23 – Mar 9
- Transplant outdoors
- Mar 23 – Apr 20
- Sow outdoors
- Mar 23 – Apr 6
- Sow for fall
- Jul 29 – Aug 12
Cabbagehardy
Next: start indoors from Feb 23
- Start indoors
- Feb 23 – Mar 9
- Transplant outdoors
- Mar 23 – Apr 20
- Sow outdoors
- Mar 23 – Apr 6
- Sow for fall
- Jul 29 – Aug 12
Cauliflowerhalf hardy
Next: start indoors from Feb 23
- Start indoors
- Feb 23 – Mar 9
- Transplant outdoors
- Apr 6 – Apr 20
- Sow outdoors
- Mar 30 – Apr 20
- Sow for fall
- Jul 29 – Aug 12
Brussels sproutshardy
Next: start indoors from Feb 23
- Start indoors
- Feb 23 – Mar 9
- Sow outdoors
- Mar 30 – Mar 30
- Sow for fall
- Jul 29 – Aug 12
Marigoldtender
Next: start indoors from Feb 23
- Start indoors
- Feb 23 – Feb 23
- Transplant outdoors
- Apr 20 – Apr 20
Calendulahalf hardy
Next: start indoors from Feb 23
- Start indoors
- Feb 23 – Mar 9
- Sow outdoors
- Apr 13 – Apr 20
Mexican sunflowertender
Next: start indoors from Feb 23
- Start indoors
- Feb 23 – Mar 9
- Sow outdoors
- Apr 20 – Apr 20
March
The next window opens in March.
Leaf lettucehardy
Next: sow outdoors from Mar 9
- Transplant outdoors
- Mar 23 – Apr 6
- Sow outdoors
- Mar 9 – Apr 6
Head lettucehardy
Next: sow outdoors from Mar 9
- Transplant outdoors
- Mar 23 – Apr 6
- Sow outdoors
- Mar 9 – Apr 6
Zinniatender
Next: start indoors from Mar 9
- Start indoors
- Mar 9 – Mar 23
- Sow outdoors
- Apr 20 – Apr 20
Nasturtiumtender
Next: start indoors from Mar 9
- Start indoors
- Mar 9 – Mar 23
- Sow outdoors
- Apr 20 – Apr 20
Sunflowertender
Next: start indoors from Mar 9
- Start indoors
- Mar 9 – Mar 23
Cucumbertender
Next: start indoors from Mar 23
- Start indoors
- Mar 23 – Apr 6
- Sow outdoors
- Apr 20 – Apr 27
Summer squashtender
Next: start indoors from Mar 23
- Start indoors
- Mar 23 – Apr 6
- Sow outdoors
- Apr 20 – Apr 27
Winter squashtender
Next: start indoors from Mar 23
- Start indoors
- Mar 23 – Apr 6
- Sow outdoors
- Apr 27 – May 4
Watermelontender
Next: start indoors from Mar 23
- Start indoors
- Mar 23 – Apr 6
- Transplant outdoors
- Apr 27 – May 4
- Sow outdoors
- Apr 27 – May 4
Cantaloupetender
Next: start indoors from Mar 23
- Start indoors
- Mar 23 – Mar 30
- Sow outdoors
- Apr 27 – May 4
Peahardy
Next: sow outdoors from Mar 23
- Sow outdoors
- Mar 23 – Apr 6
Spinachhardy
Next: sow outdoors from Mar 23
- Sow outdoors
- Mar 23 – Apr 6
Kohlrabihardy
Next: sow outdoors from Mar 23
- Sow outdoors
- Mar 23 – Apr 6
- Sow for fall
- Jul 29 – Aug 12
Radishhardy
Next: sow outdoors from Mar 23
- Sow outdoors
- Mar 23 – Apr 6
Beethalf hardy
Next: sow outdoors from Mar 23
- Sow outdoors
- Mar 23 – Apr 20
Turniphardy
Next: sow outdoors from Mar 23
- Sow outdoors
- Mar 23 – Apr 6
Bulb onionhardy
Next: sow outdoors from Mar 23
- Sow outdoors
- Mar 23 – Apr 6
Green onionhardy
Next: sow outdoors from Mar 23
- Sow outdoors
- Mar 23 – Apr 6
Kalehardy
Next: sow outdoors from Mar 30
- Sow outdoors
- Mar 30 – Mar 30
- Sow for fall
- Jul 29 – Aug 12
Collardshardy
Next: sow outdoors from Mar 30
- Sow outdoors
- Mar 30 – Mar 30
- Sow for fall
- Jul 29 – Aug 12
April
The next window opens in April.
Swiss chardhalf hardy
Next: sow outdoors from Apr 6
- Sow outdoors
- Apr 6 – Apr 20
Carrothalf hardy
Next: sow outdoors from Apr 6
- Sow outdoors
- Apr 6 – Apr 20
Potatohalf hardy
Next: sow outdoors from Apr 6
- Sow outdoors
- Apr 6 – Apr 20
Parsniphalf hardy
Next: sow outdoors from Apr 6
- Sow outdoors
- Apr 6 – Apr 20
Dillhalf hardy
Next: sow outdoors from Apr 6
- Sow outdoors
- Apr 6 – Apr 13
Bush beantender
Next: sow outdoors from Apr 20
- Sow outdoors
- Apr 20 – Apr 20
Pole beantender
Next: sow outdoors from Apr 20
- Sow outdoors
- Apr 20 – Apr 20
Sweet corntender
Next: sow outdoors from Apr 20
- Sow outdoors
- Apr 20 – Apr 20
Basiltender
Next: sow outdoors from Apr 20
- Sow outdoors
- Apr 20 – Apr 20
Marjoramtender
Next: transplant outdoors from Apr 20
- Transplant outdoors
- Apr 20 – Apr 20
Pumpkintender
Next: sow outdoors from Apr 27
- Sow outdoors
- Apr 27 – May 4
May
The next window opens in May.
Lima beantender
Next: sow outdoors from May 4
- Sow outdoors
- May 4 – May 4
September
The next window opens in September.
Sweet alyssumhardy
Next: sow for fall from Sep 9
- Sow for fall
- Sep 9 – Sep 9
No window listed
No frost-based window for these crops.
Mustard greenshalf hardy
No frost-based window listed.
No frost-based sowing window is listed for mustard greens.