When to plant fava bean in Riverside

In Riverside, typical last spring frost is February 5 and typical first fall frost is December 19. Typical last spring frost: February 5. Fava bean in Riverside is doable with planning outdoors. 102 suitable days are enough for fast varieties (80 days) but not slow ones (110 days).

Fava bean

How to grow Fava bean Riverside climate Weekly temperatures and windows

Where are you growing?

Tight fit

Tight fit in greenhouse

Tight fit in a cold frame

Fava bean in Riverside is doable with planning outdoors. 102 suitable days are enough for fast varieties (80 days) but not slow ones (110 days).

When to plantJanuary 17 – May 30

Harvest: April 7 – October 8
Season vs crop: 102 grow days vs 80–110 needed
Typical frost (last spring – first fall): February 5 – December 19

Fava bean in Riverside is doable with planning outdoors. 102 suitable days are enough for fast varieties (80 days) but not slow ones (110 days).

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 row102

Days to harvest80–110 days from seed

Jan 17 – May 30

Direct sow

Apr 7 – Oct 8

Harvest

Activity	Window	Notes
Direct sow	Jan 17 – May 30	Plant outdoors in this window.
Harvest	Apr 7 – Oct 8	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.

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.

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 5

Low-risk last spring frostFebruary 28

Typical first fall frostDecember 19

Low-risk first fall frostNovember 30

Frost-free days316

Outdoor sow dateJanuary 17

Direct sow windowJanuary 17 – May 30

Suitable growing windowJanuary 17 – April 28 (102 days)

Expected harvestApril 7 – October 8

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 Riverside, 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 Riverside

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 Riverside use ERA5-Land cell 33.95, -117.40. How we calculated this · Algorithm 2026-10-season-10.

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