When to plant · 3 cities · zones 5b–6a
When to plant carrots in New Hampshire
Direct sow nantes carrot around Apr 24 — the New Hampshire statewide median, counted from a last spring frost of May 8 across 263 ZIP codes and 55 NOAA stations.
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.
New Hampshire carrots, by step
Statewide median last frost May 8, first fall frost Oct 4, 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 | Apr 24 | Jul 3 | 70 from sow |
Tight means first harvest lands within two weeks of the median first fall frost. Statewide dates are the ZIP-weighted median of every NOAA 1991–2020 station New Hampshire's ZIP codes resolve to; 2 of 265 ZIPs have no datable freeze and are left out.
Carrots in New Hampshire, 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 |
|---|---|---|---|
| Manchesterzone 6a | Apr 30 | Apr 16 | Jun 25 |
| Nashuazone 6a | Apr 30 | Apr 16 | Jun 25 |
| Concordzone 5b | May 8 | Apr 24 | Jul 3 |
What New Hampshire 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.
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Carrots in New Hampshire: questions
When should I plant carrots in New Hampshire?
Direct sow around Apr 24 at the statewide median; across the state that date runs from Apr 16 in the warmest tenth of New Hampshire's ZIP codes to May 6 in the coldest. To cut the freeze risk to one year in ten, count from May 22 instead of the median last frost. Use the city table for your own town.
When is the last frost in New Hampshire?
The ZIP-weighted median of NOAA 1991–2020 station medians is May 8. In the warmest tenth of New Hampshire's ZIP codes the median last frost falls on or before Apr 30; in the coldest tenth, on or after May 20.
When will New Hampshire carrots be ready to harvest?
Nantes Carrot planted on the statewide date is ready around Jul 3: 70 days from sow.
More for New Hampshire
- When to plant tomatoes
- When to plant peppers
- When to plant tomatillos
- When to plant basil
- When to plant onions
- When to plant cilantro
- When to plant mustard greens
Carrots in every state → · New Hampshire frost dates → · How frost-date math works →