When to plant sweet potato in Austin

In Austin, typical last spring frost is February 15 and typical first fall frost is December 17. Typical last spring frost: February 15. Sweet potato in Austin is doable with planning outdoors. 122 suitable days are enough for fast varieties (85 days) but not slow ones (140 days).

Sweet potato

How to grow Sweet potato Austin climate Weekly temperatures and windows

Where are you growing?

Tight fit

Tight fit in greenhouse

Tight fit in a cold frame

Sweet potato in Austin is doable with planning outdoors. 122 suitable days are enough for fast varieties (85 days) but not slow ones (140 days).

When to plantMarch 24 – May 18

Harvest: June 17 – October 5
Season vs crop: 122 grow days vs 85–140 needed
Typical frost (last spring – first fall): February 15 – December 17

Sweet potato in Austin is doable with planning outdoors. 122 suitable days are enough for fast varieties (85 days) but not slow ones (140 days).

Start slips February 10 – April 6, then transplant March 24 – May 18 so the crop can finish outdoors.

Planting conditions

Suitable growing days in a row122

Days to harvest85–140 days from planting

No planting window is recorded for this place.

Too cold
Frost line

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 frostFebruary 15

Low-risk last spring frostMarch 10

Typical first fall frostDecember 17

Low-risk first fall frostNovember 18

Frost-free days304

Earliest indoor seed startFebruary 10

Latest indoor seed startApril 6

Transplant outdoorsMarch 24 – May 18

Direct sow windownot recommended here

Suitable growing windowMarch 24 – July 23 (122 days)

Expected harvestJune 17 – October 5

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 Austin, shown in the key dates.
Days to harvest: 85–140 days from planting, 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 Austin

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 Austin use ERA5-Land cell 30.27, -97.74. How we calculated this · Algorithm 2026-10-season-10.

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