When to plant · 1 city · zone 12b

When to plant carrots in Hawaii

Most of Hawaii has no datable 32 °F freeze, so the carrots dates here run on the Zone 11+ schedule the Plan Builder uses for heat-limited gardens: direct sow around Jan 1.

Jan 1Direct sowZone 11+ schedule
RareLast spring frostno datable 32 °F freeze in most ZIPs
Mar 12First harvest70 days from sow

The rule: Direct sow two weeks before the last frost and keep the top half-inch of soil damp for the 14–21 days it takes to germinate.

Hawaii carrots, by step

Zone 11+ planning dates, 2027 season. Each cultivar's own indoor lead time and days to maturity, same engine as the Plan Builder.

CultivarStart indoorsSowFirst harvestDays
Nantes CarrotScarlet NantesDirect sowJan 1Mar 1270 from sow

Tight means first harvest lands within two weeks of the median first fall frost. 96 of Hawaii's 97 ZIP codes have no datable freeze in NOAA's 1991–2020 normals, so these rows use the Zone 11+ planning average for the state's median zone (12b).

Carrots in Hawaii, city by city

Nantes Carrot, scheduled from each city's nearest NOAA station — the same dates as its frost page.

CityLast frostSowFirst harvest
Honoluluzone 12bfrost rareJan 1Mar 12

What Hawaii carrots need

SeedsThe cultivar decides the sauce. Everything downstream is damage control.
  • Scarlet Nantes Carrot Seed

    The carrot that makes a fermented habanero sauce work. It brings sweetness and body so the sauce has texture without thickener and heat without being one-dimensional.

StartSoil temperature and light intensity, indoors, weeks before your frost date.
  • Organic Seed Starter Potting MixMust have

    Seed-starting mix is not potting soil with a nicer label — it is finer, lighter, and low in nutrients on purpose, because a seedling's first roots want air and moisture, not fertiliser.

GrowRoot volume, nutrition and structure. Where most home crops actually fail.
  • Ocean Forest Potting SoilMust have

    Pre-charged with enough nutrition to carry a transplant for its first month without feeding, which is exactly the window when most container plants stall.

  • 5-Gallon Fabric Grow Bags, 5-Pack

    Fabric pots air-prune roots and drain faster than a plastic pot can, which is the entire reason container tomatoes fail. Five gallons is the honest minimum for a pepper; a tomato wants ten.

  • Rapitest Soil Test Kit

    In-ground growers are guessing until they test. pH outside 6.0–6.8 locks nutrients out no matter how much fertiliser you add, and no amount of feeding fixes that.

  • 3-in-1 Soil Moisture / Light / pH Tester

    Used for one thing — is the root zone actually dry six inches down — it prevents both halves of the most common container failure. Ignore the pH scale on it entirely.

HarvestTiming, handling, and weighing what you actually got.
  • Garden Harvest Basket with Tool Caddy

    A harvest basket that doubles as a colander means the hose rinse happens in the garden, and the dirt stays outside. On a 20-pound tomato day that is a genuine time saving.

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Carrots in Hawaii: questions

When should I plant carrots in Hawaii?

Around Jan 1, on the Zone 11+ schedule: frost is too rare in most of Hawaii for NOAA to date, so summer heat sets the calendar.

When will Hawaii carrots be ready to harvest?

Nantes Carrot planted on the statewide date is ready around Mar 12: 70 days from sow.

More for Hawaii

Carrots in every state → · Hawaii frost dates → · How frost-date math works →