When to plant chili pepper in San Antonio

In San Antonio, typical last spring frost is January 30 and typical first fall frost is December 24. Typical last spring frost: January 30. Chili pepper in San Antonio is a good fit outdoors. The suitable growing window of 125 days covers the 60–100 days this plant usually needs.

Chili pepper

How to grow Chili pepper San Antonio climate Weekly temperatures and windows

Where are you growing?

Comfortable

Tight fit in greenhouse

Comfortable in a cold frame

Chili pepper in San Antonio is a good fit outdoors. The suitable growing window of 125 days covers the 60–100 days this plant usually needs.

Start indoors: January 16 – March 12
Transplant outside: March 20 – May 14
Harvest: May 19 – August 22
Season vs crop: 125 grow days vs 60–100 needed
Typical frost (last spring – first fall): January 30 – December 24

Chili pepper in San Antonio is a good fit outdoors. The suitable growing window of 125 days covers the 60–100 days this plant usually needs.

Planting conditions

Start indoors
Harden off
Transplant outside
Grow outdoors
Harvest

Local activity windows for this place and growing method. Blue fill is usually too cold for this plant. Dashed lines are typical last and first frost.

Suitable growing days in a row125

Days to harvest60–100 days from transplant

Jan 16 – Mar 12

Start indoors

Mar 13 – Mar 19

Harden off

March 20

Transplant outside

Mar 21 – May 18

Grow outdoors

May 19 – Aug 22

Harvest

Activity	Window	Notes
Start indoors	Jan 16 – Mar 12	Sow indoors before the outdoor window.
Harden off	Mar 13 – Mar 19	Acclimate seedlings outdoors before planting.
Transplant outside	March 20	Move plants outside on this day (start of the plant-out window).
Grow outdoors	Mar 21 – May 18	Plants grow outdoors until harvest.
Harvest	May 19 – Aug 22	Expected harvest from typical days to harvest.

Start indoors
Harden off
Transplant outside
Grow outdoors
Harvest

Blue fill is usually too cold for this plant. Dashed lines are typical last and first frost (35 seasons (1991–2025)). Adjust a week or two for your conditions.

Planting and growing across the year

Planting is the sow / plant-out window. Growing is daytime air versus this plant’s ideal (21 – 32 °C70 – 90 °F21 – 32 °C (70 – 90 °F)) and tolerable (16 – 35 °C61 – 95 °F16 – 35 °C (61 – 95 °F)) ranges.

Ideal / plantable
Tolerable
Too cold
Too hot
Outside window

Planting uses sow / plant-out rules; growing shows daytime air against this plant’s ideal and tolerable ranges.

Key dates

Typical last spring frostJanuary 30

Low-risk last spring frostMarch 6

Typical first fall frostDecember 24

Low-risk first fall frostDecember 4

Frost-free days327

Earliest indoor seed startJanuary 16

Latest indoor seed startMarch 12

Transplant outdoorsMarch 20 – May 14

Direct sow windownot recommended here

Suitable growing windowMarch 20 – July 22 (125 days)

Expected harvestMay 19 – August 22

How these dates are judged

Ideal conditions: Daytime air from 21 – 32 °C70 – 90 °F21 – 32 °C (70 – 90 °F).
Suitable conditions: Daytime air from 16 – 35 °C61 – 95 °F16 – 35 °C (61 – 95 °F).
Last frost and first frost: Typical spring and fall frost dates for San Antonio, shown in the key dates.
Days to harvest: 60–100 days from transplant, from typical days to harvest.
Sowing window: Dated sow and harvest bars use frost dates, soil minima, night limits, and last-sow count-back from typical crop timing. Air ratings on the weekly chart colour only weeks inside that same window — see weekly temperatures and windows.

Other plants for San Antonio

Calculated by Plan & Plant. Method. Data 35 seasons (1991–2025).

Frost and suitability dates are typical figures from climate statistics.

Based on 35 years (1991–2025) of ERA5-Land data from Open-Meteo, for an area of about 10 km. Typical dates, not a guarantee.

Dates for San Antonio use ERA5-Land cell 29.42, -98.49. How we calculated this · Algorithm 2026-10-season-10.

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