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.
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.
| Cultivar | Start indoors | Sow | First harvest | Days |
|---|---|---|---|---|
| Nantes CarrotScarlet Nantes | Direct sow | Jan 1 | Mar 12 | 70 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.
| City | Last frost | Sow | First harvest |
|---|---|---|---|
| Honoluluzone 12b | frost rare | Jan 1 | Mar 12 |
What Hawaii carrots need
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.
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.
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.
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.
Paid links. We earn a commission from Amazon if you buy; you pay the same. Disclosure.
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
- When to plant tomatoes
- When to plant peppers
- When to plant tomatillos
- When to plant basil
- When to plant cilantro
- When to plant mustard greens
Carrots in every state → · Hawaii frost dates → · How frost-date math works →