When to plant broccoli in Miami

Where are you growing?

Comfortable

Comfortable in a cold frame

Broccoli in Miami is a good fit outdoors. The suitable growing window of 154 days covers the 55–75 days this plant usually needs.

Start indoors: November 13 – January 7
Transplant outside: January 1 – February 25; November 3 – December 28
Harvest: February 25 – May 11
Season vs crop: 154 grow days vs 55–75 needed

Broccoli in Miami is a good fit outdoors. The suitable growing window of 154 days covers the 55–75 days this plant usually needs.

Planting conditions

Start indoors
Grow indoors
Harden off
Transplant outside
Grow outdoors
Harvest

Local activity windows for this place and growing method.

Suitable growing days in a row154

Days to harvest55–75 days from transplant

Nov 13 – Jan 7

Start indoors

Jan 8 – Dec 24

Grow indoors

Dec 25 – Dec 31

Harden off

January 1

Transplant outside

Jan 2 – Feb 24

Grow outdoors

Feb 25 – May 11

Harvest

Activity	Window	Notes
Start indoors	Nov 13 – Jan 7	Sow indoors before the outdoor window.
Grow indoors	Jan 8 – Dec 24	Seedlings grow indoors until harden or transplant.
Harden off	Dec 25 – Dec 31	Acclimate seedlings outdoors before planting.
Transplant outside	January 1	Move plants outside on this day (start of the plant-out window).
Grow outdoors	Jan 2 – Feb 24	Plants grow outdoors until harvest.
Harvest	Feb 25 – May 11	Expected harvest from typical days to harvest.

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 (59 – 75 °F) and tolerable (39 – 81 °F) ranges.

Planting uses sow / plant-out rules (frost, soil germination, night, and last-sow): green when plantable, blue diagonal when nights or soil are too cold, amber cross-hatch when too hot, faint for other calendar limits. Growing shows daytime air against this plant’s ideal and tolerable ranges across the year.

Key dates

Frost-free days365

Earliest indoor seed startNovember 13

Latest indoor seed startJanuary 7

Transplant outdoorsJanuary 1 – February 25

Direct sow windownot recommended here

Suitable growing windowNovember 3 – April 5 (154 days)

Expected harvestFebruary 25 – May 11

How these dates are judged

Ideal conditions: Daytime air from 59 – 75 °F.
Suitable conditions: Daytime air from 39 – 81 °F.
Last frost and first frost: Typical spring and fall frost dates for Miami, shown in the key dates.
Days to harvest: 55–75 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. The year strip and weekly chart use the same window: air ratings only colour weeks inside it.

Growing window for Broccoli: Jan 1 – Apr 5; Nov 3 – Apr 5 (249 days)

Planting window for Broccoli: Jan 1 – Feb 25; Nov 3 – Dec 28 (112 days)

Outdoors: weekly temperatures and windows

Temperatures across the year for Miami. Shaded bands are this plant’s ideal and tolerable daytime air ranges. Growing is daytime air suitability; Planting is sow / plant-out conditions (same colour language). Window brackets mark each stretch.

Ideal range
Tolerable range
Possible min to max
Average min to max
Suitable
Tolerable
Too cold
Too hot

Selected week · tap a week or use the arrows

Week 1 · Jan 1 – Jan 4

Average 69 to 76 °F · Possible 56 to 82 °F

Growing: tolerable

Planting: suitable

A week is in range when its average low and high sit inside the tolerance band 39 to 81 °F; it is suitable when that average range also overlaps the ideal 59 to 75 °F band and possible readings stay within 39 °F to 81 °F. Crossing a possible limit, or missing the ideal band, makes it tolerable; a possible low below 39 °F makes it tolerable. When a sowing window is calculated, weeks outside that window are uncoloured even if air is in range.

Based on average frost dates.

Show all 53 weeks

Cover method weekly charts

Outdoor weekly chart is above. Open a cover chart only if you grow under fleece, a cold frame, or an unheated greenhouse.

Other plants for Miami

Calculated by Plan & Plant · Method · Data 2019–2026

Frost and suitability dates are typical figures from climate statistics. Microclimates vary; they are not a guarantee.

How we calculated this

Data: ERA5-Land via Open-Meteo, cell 25.76, -80.19, years 2019–2026 (not a 30-year climate normal yet).
Typical and safer dates: Typical last frost is the date after which half of winters in this sample had no more frost; safer is later in the sample so fewer winters still frosted.
Crop rule: Local windows for Broccoli from frost dates, temperature ratings, and crop timing rules.
Confidence: Provisional — short or thin sample for this place.
Full methodology (algorithm 2026-10-season-6).

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