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When to plant carrot in Houston

How to grow CarrotHouston climate
Where are you growing?

Comfortable

Tight fit in greenhouse

Comfortable in a cold frame

Carrot in Houston is a good fit outdoors. The suitable growing window of 127 days covers the 60–80 days this plant usually needs.

When to plantJanuary 18 – October 6

Harvest
March 19 – May 24
Season vs crop
127 grow days vs 60–80 needed

Carrot in Houston is a good fit outdoors. The suitable growing window of 127 days covers the 60–80 days this plant usually needs.

Planting conditions

Carrot planting activities across the year: Direct sow, HarvestJFMAMJJASOND
  • Direct sow
  • Harvest
Local activity windows for this place and growing method.
Suitable growing days in a row127
Days to harvest60–80 days from seed
Jan 18 – Oct 6
Direct sow
Mar 19 – May 24
Harvest
ActivityWindowNotes
Direct sowJan 18 – Oct 6Plant outdoors in this window.
HarvestMar 19 – May 24Expected 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 – 86 °F) ranges.

Carrot planting and growing weeks in HoustonJANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDECPlantingGrowing
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
Outdoor sow dateJanuary 18
Direct sow windowJanuary 18 – October 6
Suitable growing windowJanuary 18 – May 24 (127 days)
Expected harvestMarch 19 – May 24

How these dates are judged

Ideal conditions
Daytime air from 59 – 75 °F.
Suitable conditions
Daytime air from 39 – 86 °F.
Last frost and first frost
Typical spring and fall frost dates for Houston, shown in the key dates.
Days to harvest
60–80 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. The year strip and weekly chart use the same window: air ratings only colour weeks inside it.

Growing window for Carrot: Jan 18 – May 24 (127 days)

Planting window for Carrot: Jan 18 – Oct 6 (262 days)

Outdoors: weekly temperatures and windows

Temperatures across the year for Houston. 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.

JanFebMarAprMayJunJulAugSepOctNovDec−20 °C−4 °F−10 °C14 °F0 °C32 °F10 °C50 °F20 °C68 °F30 °C86 °F40 °C104 °FTolerable 4–30 °CTolerable 39–86 °FIdeal 15–24 °CIdeal 59–75 °FWindowGrowingJan 18 – May 24PlantingJan 18 – Oct 6No typical frost here. Timing follows heat, not frost.
  • 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 3 · Jan 12 – Jan 18

Average 44 to 63 °F · Possible 21 to 77 °F

Growing: tolerable

Planting: not sowable

A week is in range when its average low and high sit inside the tolerance band 39 to 86 °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 86 °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 Houston

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 29.76, -95.37, 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 Carrot 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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