When to plant pumpkin in Los Angeles

In Los Angeles, typical last spring frost is January 15 and typical first fall frost is January 1. Typical last spring frost: January 15. Pumpkin in Los Angeles is a good fit outdoors. The suitable growing window of 138 days covers the 90–120 days this plant usually needs.

Pumpkin

How to grow Pumpkin Los Angeles climate Weekly temperatures and windows

Where are you growing?

Comfortable

Comfortable in greenhouse

Tight fit in a cold frame

Pumpkin in Los Angeles is a good fit outdoors. The suitable growing window of 138 days covers the 90–120 days this plant usually needs.

When to plantMay 10 – July 4

Harvest: August 8 – November 1
Season vs crop: 138 grow days vs 90–120 needed
Typical frost (last spring – first fall): January 15 – January 1

Pumpkin in Los Angeles is a good fit outdoors. The suitable growing window of 138 days covers the 90–120 days this plant usually needs.

Planting conditions

Direct sow
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 row138

Days to harvest90–120 days from seed

May 10 – Jul 4

Direct sow

Jul 5 – Aug 7

Grow outdoors

Aug 8 – Nov 1

Harvest

Activity	Window	Notes
Direct sow	May 10 – Jul 4	Plant outdoors in this window.
Grow outdoors	Jul 5 – Aug 7	Plants grow outdoors until harvest.
Harvest	Aug 8 – Nov 1	Expected harvest from typical days to harvest.

Direct sow
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 – 35 °C70 – 95 °F21 – 35 °C (70 – 95 °F)) and tolerable (16 – 38 °C61 – 100 °F16 – 38 °C (61 – 100 °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 15

Low-risk last spring frostFebruary 14

Typical first fall frostJanuary 1

Low-risk first fall frostDecember 19

Frost-free days350

Outdoor sow dateMay 10

Direct sow windowMay 10 – July 4

Suitable growing windowMay 10 – September 24 (138 days)

Expected harvestAugust 8 – November 1

How these dates are judged

Ideal conditions: Daytime air from 21 – 35 °C70 – 95 °F21 – 35 °C (70 – 95 °F).
Suitable conditions: Daytime air from 16 – 38 °C61 – 100 °F16 – 38 °C (61 – 100 °F).
Last frost and first frost: Typical spring and fall frost dates for Los Angeles, shown in the key dates.
Days to harvest: 90–120 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 Los Angeles

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 Los Angeles use ERA5-Land cell 34.05, -118.25. How we calculated this · Algorithm 2026-10-season-10.

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