When to plant fava bean in Dallas

In Dallas, typical last spring frost is February 20 and typical first fall frost is December 7. Typical last spring frost: February 20. Fava bean in Dallas is not realistic outdoors: 77 suitable days are fewer than the 80 days this plant usually needs.

Fava bean

How to grow Fava bean Dallas climate Weekly temperatures and windows

Where are you growing?

Not realistic outdoors

Not realistic in greenhouse

Tight fit in a cold frame

Fava bean in Dallas is doable with planning under fleece. 81 suitable days are enough for fast varieties (80 days) but not slow ones (110 days).

When to plantJanuary 25 – May 9

Harvest: April 15 – September 17
Season vs crop: 81 grow days vs 80–110 needed
Typical frost (last spring – first fall): February 12 – December 20

Fava bean in Dallas is doable with planning under fleece. 81 suitable days are enough for fast varieties (80 days) but not slow ones (110 days).

Estimate. Protection varies with the cover, the weather and how you vent it.

Fleece adds about 1–4 °C on frosty nights, depending on its weight. Remove it on warm days.

Fleece also cuts light: about 5–10 % for light fleece, up to 50–70 % for heavy grades. Take it off by day once frosts are over.

Cover dates are modelled from weather-model data using published greenhouse studies. They are not measured in your greenhouse. A max–min thermometer inside will tell you more.

Typical last frost estimate range February 18 – January 30, depending on the cover and the night.

Planting conditions

Direct sow
Harvest

Local activity windows for this place and growing method. Dashed lines are typical last and first frost.

Suitable growing days in a row81

Days to harvest80–110 days from seed

Jan 25 – May 9

Direct sow

Apr 15 – Sep 17

Harvest

Activity	Window	Notes
Direct sow	Jan 25 – May 9	Plant outdoors in this window.
Harvest	Apr 15 – Sep 17	Expected harvest from typical days to harvest.

Direct sow
Harvest

Based on average frost dates (35 seasons (1991–2025)). Adjust a week or two for your conditions.

Protected frost and sowing dates are modelled estimates from weather-model data and published greenhouse studies, not measured in your greenhouse. A max–min thermometer inside will tell you more.

Planting and growing across the year

Planting is the sow / plant-out window. Growing is daytime air versus this plant’s ideal (15 – 21 °C59 – 70 °F15 – 21 °C (59 – 70 °F)) and tolerable (4 – 24 °C39 – 75 °F4 – 24 °C (39 – 75 °F)) ranges, from modelled cover temperatures for the growing method you selected.

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 12

Low-risk last spring frostMarch 8

Typical first fall frostDecember 20

Low-risk first fall frostNovember 20

Frost-free days310

Outdoor sow dateJanuary 25

Direct sow windowJanuary 25 – May 9

Suitable growing windowJanuary 25 – April 15 (81 days)

Expected harvestApril 15 – September 17

How these dates are judged

Ideal conditions: Daytime air from 15 – 21 °C59 – 70 °F15 – 21 °C (59 – 70 °F).
Suitable conditions: Daytime air from 4 – 24 °C39 – 75 °F4 – 24 °C (39 – 75 °F).
Last frost and first frost: Typical spring and fall frost dates for Dallas, shown in the key dates.
Days to harvest: 80–110 days from seed, 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 Dallas

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 Dallas use ERA5-Land cell 32.78, -96.80. How we calculated this · Algorithm 2026-10-season-10.

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