In the garden now (2 November 2026)
Start indoors
No indoor sowing due this week.
Ready to pick
TomatoesPeppersEggplantCucumbersZucchiniPumpkinsWatermelonsSweet cornGreen beansSwiss chardBasil
Coming up in the next 4 weeks
No new outdoor sowings start in the next four weeks.
San Antonio 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 | Jan 5 – Feb 9, May 31 – Jul 5 | Mar 2 – May 15, Jul 26 – Sep 20 plant out | May 5 – Aug 27, Sep 13 – Dec 2 |
| Pepper | Jan 3 – Feb 7, Apr 29 – Jun 3 | Mar 14 – Jun 11, Jul 8 – Sep 17 plant out | May 15 – Dec 2 |
| Eggplant (aubergine) | Jan 11 – Feb 15, May 11 – Jun 15 | Mar 22 – May 20, Jul 20 – Sep 14 plant out | May 23 – Aug 25, Sep 14 – Dec 2 |
| Cucumber | Feb 5 – Mar 4 | Mar 5 – Jun 1, Aug 3 – Oct 1 sow | Apr 26 – Aug 20, Sep 11 – Dec 2 |
| Zucchini (courgette) | Jan 30 – Feb 26 | Feb 27 – Jun 22, Jul 22 – Oct 4 sow | Apr 20 – Dec 2 |
| Pumpkin and winter squash | Feb 2 – Mar 1 | Mar 2 – May 31, Jun 22 – Sep 3 sow | May 26 – Dec 2 |
| Watermelon | Feb 22 – Mar 21 | Mar 22 – Sep 13 sow | May 27 – Dec 2 |
| Sweet corn | – | Feb 27 – Jun 8, Jul 4 – Sep 16 sow | May 11 – Aug 23, Aug 29 – Dec 2 |
| Green beans | – | Feb 27 – May 18, Aug 12 – Oct 1 sow | Apr 23 – Jul 30, Sep 20 – Dec 2 |
| Peas | – | Jan 9 – Feb 12 sow | Mar 20 – May 5 |
| Lettuce | Dec 19 – Jan 16 | Jan 23 – Mar 7, Oct 2 – Oct 27 sow | Mar 16 – May 12, Nov 8 – Dec 13 |
| Spinach | – | Jan 9 – Mar 1, Oct 25 – Nov 11 sow | Dec 3 – Jan 2, Mar 3 – May 3 |
| Kale | Aug 14 – Sep 18 | Sep 25 – Apr 6 sow | Nov 9 – Jul 28 |
| Cabbage | Dec 5 – Jan 9, Aug 7 – Sep 10 | Jan 23 – Mar 8, Sep 25 – Oct 15 plant out | Apr 4 – May 31, Nov 22 – Dec 24 |
| Broccoli | Dec 12 – Jan 16, Aug 14 – Sep 13 | Jan 30 – Mar 15, Oct 2 – Oct 18 plant out | Mar 31 – May 30, Nov 21 – Dec 17 |
| Carrots | – | Jan 30 – Apr 20, Sep 25 – Oct 30 sow | Nov 17 – Jan 17, Apr 4 – Aug 5 |
| Beets (beetroot) | – | Jan 30 – Apr 27, Sep 25 – Oct 26 sow | Mar 28 – Jul 21, Nov 9 – Dec 24 |
| Radishes | – | Jan 16 – Mar 22, Oct 14 – Nov 16 sow | Feb 20 – Apr 25, Nov 4 – Dec 17 |
| Onions | Nov 14 – Dec 19 | Jan 23 – Apr 27 plant out | Apr 22 – Aug 6 |
| Garlic | Garlic needs about six weeks below 10 °C to form bulbs; winters here are too mild for most varieties. | ||
| Potatoes | – | Feb 6 – Apr 17 sow | Apr 26 – Aug 6 |
| Swiss chard | – | Feb 6 – Apr 30, Sep 10 – Oct 29 sow | Mar 28 – Sep 29, Oct 21 – Dec 24 |
| Basil | Jan 31 – Feb 28 | Mar 14 – Oct 19 plant out | Apr 13 – Dec 2 |
| Cilantro (coriander) | – | Jan 30 – Mar 14, Oct 14 – Nov 6 sow | Mar 12 – May 10, Nov 14 – Dec 17 |
| Parsley | Dec 5 – Jan 9 | Jan 30 – Apr 18, Sep 25 – Oct 19 sow | Nov 22 – Jan 2, Apr 8 – Oct 1 |
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 San Antonio
- Average last spring frost
- February 20
- Late frost (1 year in 10)
- March 13
- Average first autumn frost
- December 3
- Early frost (1 year in 10)
- November 12
- Frost-free growing season
- 285 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, San Antonio Stinson Muni Ap (10 km from the city centre).
Climate at a glance
- Hardiness zone
- 9a from station records
- Average coldest winter night
- -4°C24°F
- Warmest month
- August, highs 36°C97°F
- Coldest month
- January, lows 6°C42°F
- Crops with an outdoor window
- 24 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 | 18°C65°F | 6°C42°F | 12°C53°F | 47 mm1.8 in |
| February | 20°C69°F | 8°C46°F | 14°C57°F | 46 mm1.8 in |
| March | 24°C75°F | 11°C53°F | 18°C64°F | 44 mm1.7 in |
| April | 28°C82°F | 15°C59°F | 21°C71°F | 61 mm2.4 in |
| May | 31°C88°F | 20°C67°F | 25°C78°F | 90 mm3.6 in |
| June | 34°C94°F | 23°C73°F | 28°C83°F | 89 mm3.5 in |
| July | 36°C96°F | 24°C75°F | 30°C85°F | 60 mm2.4 in |
| August | 36°C97°F | 24°C75°F | 30°C86°F | 64 mm2.5 in |
| September | 33°C91°F | 21°C69°F | 27°C80°F | 90 mm3.6 in |
| October | 29°C84°F | 16°C61°F | 22°C72°F | 87 mm3.4 in |
| November | 23°C73°F | 10°C51°F | 17°C62°F | 62 mm2.4 in |
| December | 18°C65°F | 6°C43°F | 12°C54°F | 50 mm2.0 in |
Monthly averages 1991–2020 from TerraClimate (about 4 km grid).