In the garden now (2 November 2026)
Sow or plant outside
Start indoors
No indoor sowing due this week.
Ready to pick
TomatoesPeppersEggplantCucumbersZucchiniPumpkinsWatermelonsSweet cornGreen beansLettuceKaleCarrotsBeetsRadishesSwiss chardBasilCilantro
Coming up in the next 4 weeks
No new outdoor sowings start in the next four weeks.
Tulsa planting calendar
Bars show when each crop can go in and when a planting from that window is ready. The blue band is the frost season, from the average first autumn frost to the average last spring frost. Hover or tap a crop for details.
Sow indoorsSow or plant outdoorsHarvestFrost seasonToday
Swipe sideways to see the whole year →
Dates by crop
| Crop | Sow indoors | Sow / plant outdoors | Harvest |
|---|---|---|---|
| Tomato | Feb 14 – Mar 21, May 8 – Jun 12 | Apr 11 – Jun 14, Jul 3 – Aug 24 plant out | Jun 12 – Nov 3 |
| Pepper | Feb 13 – Mar 20 | Apr 24 – Aug 21 plant out | Jun 22 – Nov 3 |
| Eggplant (aubergine) | Feb 19 – Mar 26, Apr 18 – May 23 | Apr 30 – Jun 10, Jun 27 – Aug 17 plant out | Jun 29 – Nov 3 |
| Cucumber | Mar 20 – Apr 16 | Apr 17 – Jun 21, Jul 12 – Sep 4 sow | Jun 4 – Nov 3 |
| Zucchini (courgette) | Mar 14 – Apr 10 | Apr 11 – Sep 7 sow | May 29 – Nov 3 |
| Pumpkin and winter squash | Mar 14 – Apr 10 | Apr 11 – Aug 6 sow | Jul 3 – Nov 3 |
| Watermelon | Apr 2 – Apr 29 | Apr 30 – Aug 17 sow | Jul 3 – Nov 3 |
| Sweet corn | – | Apr 7 – Aug 20 sow | Jun 17 – Nov 3 |
| Green beans | – | Apr 11 – Jun 8, Jul 24 – Sep 4 sow | Jun 2 – Aug 20, Sep 1 – Nov 3 |
| Peas | – | Feb 17 – Mar 16 sow | May 6 – Jun 11 |
| Lettuce | Jan 27 – Feb 24 | Mar 3 – Apr 9, Sep 12 – Sep 27 sow | Apr 29 – Jun 15, Oct 20 – Nov 14 |
| Spinach | – | Feb 17 – Apr 5 sow | Apr 21 – Jun 8 |
| Kale | Jan 13 – Feb 17 | Feb 24 – May 6, Sep 6 – Sep 27 sow | May 4 – Aug 27, Oct 22 – Dec 19 |
| Cabbage | Jan 13 – Feb 17, Jul 19 – Aug 9 | Mar 3 – Apr 9, Sep 6 – Sep 13 plant out | May 17 – Jul 3, Nov 8 – Nov 25 |
| Broccoli | Jan 20 – Feb 24, Jul 25 – Aug 14 | Mar 10 – Apr 17, Sep 12 – Sep 18 plant out | May 13 – Jul 2, Nov 5 – Nov 18 |
| Carrots | – | Mar 10 – May 14, Sep 6 – Sep 20 sow | May 16 – Aug 29, Nov 2 – Dec 19 |
| Beets (beetroot) | – | Mar 10 – May 21, Sep 6 – Sep 24 sow | May 9 – Aug 14, Oct 22 – Nov 25 |
| Radishes | – | Feb 24 – Apr 26, Sep 23 – Oct 15 sow | Apr 7 – May 30, Oct 14 – Nov 18 |
| Onions | Dec 23 – Jan 27, Mar 29 – Apr 24 | Mar 3 – May 17, Jun 7 – Jun 19 plant out | Jun 5 – Sep 28 |
| Garlic | – | Oct 30 – Nov 18 sow | May 3 – May 23 |
| Potatoes | – | Mar 17 – May 7 sow | Jun 7 – Aug 26 |
| Swiss chard | – | Mar 17 – May 23, Aug 22 – Sep 27 sow | May 8 – Nov 25 |
| Basil | Mar 13 – Apr 10 | Apr 24 – Sep 21 plant out | May 22 – Nov 3 |
| Cilantro (coriander) | – | Mar 10 – Apr 17, Sep 23 – Oct 6 sow | Apr 24 – Jun 14, Oct 25 – Nov 18 |
| Parsley | Jan 13 – Feb 17 | Mar 10 – May 11, Sep 6 – Sep 14 sow | May 20 – Oct 24, Nov 8 – Dec 4 |
Dates are for a typical year and the middle of the window is the safest. Sow a little at a time across a window rather than all at once. Cold snaps, heat waves, frost pockets and city warmth all shift the real dates; watch the forecast.
Frost dates in Tulsa
- Average last spring frost
- March 31
- Late frost (1 year in 10)
- April 15
- Average first autumn frost
- November 4
- Early frost (1 year in 10)
- October 20
- Frost-free growing season
- 217 days
“Average” is the date with an even chance of a later (spring) or earlier (autumn) frost: a night at or below 0 °C (32 °F) at screen height. Tender crops go out a week or two after the spring date, which brings the risk down to about one year in ten.
Source: NOAA 1991–2020 normals, Tulsa Intl Ap (11 km from the city centre).
Climate at a glance
- Hardiness zone
- 7b from station records
- Average coldest winter night
- -14°C6°F
- Warmest month
- July, highs 35°C94°F
- Coldest month
- January, lows -3°C27°F
- Crops with an outdoor window
- 25 of 25
The zone follows the USDA scheme: bands of the average lowest temperature of the year, 10 °F wide, split into a and b halves. Worked out from the coldest night of each year 1991–2020 at the NOAA station. It tells you which perennials survive winter, not when to sow.
Temperature and rain by month
Average highAverage lowRainFreezing point
| Month | High | Low | Mean | Rain |
|---|---|---|---|---|
| January | 10°C50°F | -3°C27°F | 4°C38°F | 42 mm1.7 in |
| February | 13°C55°F | 0°C31°F | 6°C43°F | 46 mm1.8 in |
| March | 18°C64°F | 4°C40°F | 11°C52°F | 77 mm3.0 in |
| April | 23°C74°F | 9°C49°F | 16°C61°F | 96 mm3.8 in |
| May | 27°C81°F | 15°C59°F | 21°C70°F | 133 mm5.2 in |
| June | 32°C89°F | 20°C68°F | 26°C79°F | 114 mm4.5 in |
| July | 35°C94°F | 22°C72°F | 29°C83°F | 105 mm4.1 in |
| August | 34°C94°F | 21°C71°F | 28°C82°F | 84 mm3.3 in |
| September | 30°C86°F | 17°C62°F | 24°C74°F | 104 mm4.1 in |
| October | 24°C76°F | 10°C50°F | 17°C63°F | 80 mm3.1 in |
| November | 17°C62°F | 4°C39°F | 10°C51°F | 65 mm2.5 in |
| December | 11°C51°F | -1°C30°F | 5°C41°F | 50 mm2.0 in |
Monthly averages 1991–2020 from TerraClimate (about 4 km grid).