When to plant · 38 cities · zones 5b–6a

When to plant carrots in Illinois

Direct sow nantes carrot around Apr 3 — the Illinois statewide median, counted from a last spring frost of Apr 17 across 1,402 ZIP codes and 192 NOAA stations.

Apr 3Direct sowMar 24 – Apr 13 across the state
Apr 17Last spring frostmedian · 1 in 10 years after May 3
Jun 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.

Illinois carrots, by step

Statewide median last frost Apr 17, first fall frost Oct 21, 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 sowApr 3Jun 1270 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 Illinois's ZIP codes resolve to.

Carrots in Illinois, city by city

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

CityLast frostSowFirst harvest
Chicagozone 6aApr 10Mar 27Jun 5
Aurorazone 5bApr 19Apr 5Jun 14
Napervillezone 5bApr 28Apr 14Jun 23
Jolietzone 5bApr 19Apr 5Jun 14
Rockfordzone 5bApr 24Apr 10Jun 19
Elginzone 5bApr 26Apr 12Jun 21
Springfieldzone 6aApr 15Apr 1Jun 10
Peoriazone 6aApr 16Apr 2Jun 11
Champaignzone 6aApr 15Apr 1Jun 10
Waukeganzone 6aApr 30Apr 16Jun 25
Cicerozone 6aApr 11Mar 28Jun 6
Bloomingtonzone 6aApr 21Apr 7Jun 16
Schaumburgzone 5bApr 30Apr 16Jun 25
Evanstonzone 6aApr 26Apr 12Jun 21
Arlington Heightszone 6aApr 19Apr 5Jun 14
Bolingbrookzone 6aApr 20Apr 6Jun 15
Decaturzone 6aApr 14Mar 31Jun 9
Palatinezone 5bApr 25Apr 11Jun 20
Skokiezone 6aApr 26Apr 12Jun 21
Des Plaineszone 6aApr 16Apr 2Jun 11
Orland Parkzone 6aApr 20Apr 6Jun 15
Oak Lawnzone 6aApr 10Mar 27Jun 5
Mount Prospectzone 6aApr 19Apr 5Jun 14
Berwynzone 6aApr 11Mar 28Jun 6
Tinley Parkzone 6aApr 23Apr 9Jun 18
Wheatonzone 5bApr 28Apr 14Jun 23
Normalzone 6aApr 25Apr 11Jun 20
Oak Parkzone 6aApr 11Mar 28Jun 6
Hoffman Estateszone 5bApr 30Apr 16Jun 25
Downers Grovezone 6aApr 28Apr 14Jun 23
Plainfieldzone 5bApr 20Apr 6Jun 15
Glenviewzone 6aApr 19Apr 5Jun 14
Elmhurstzone 6aApr 16Apr 2Jun 11
Lombardzone 6aApr 28Apr 14Jun 23
Buffalo Grovezone 6aApr 19Apr 5Jun 14
Molinezone 5bApr 24Apr 10Jun 19
Crystal Lakezone 5bMay 1Apr 17Jun 26
Romeovillezone 6aApr 20Apr 6Jun 15

What Illinois 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.

Paid links. We earn a commission from Amazon if you buy; you pay the same. Disclosure.

Carrots in Illinois: questions

When should I plant carrots in Illinois?

Direct sow around Apr 3 at the statewide median; across the state that date runs from Mar 24 in the warmest tenth of Illinois's ZIP codes to Apr 13 in the coldest. To cut the freeze risk to one year in ten, count from May 3 instead of the median last frost. Use the city table for your own town.

When is the last frost in Illinois?

The ZIP-weighted median of NOAA 1991–2020 station medians is Apr 17. In the warmest tenth of Illinois's ZIP codes the median last frost falls on or before Apr 7; in the coldest tenth, on or after Apr 27.

When will Illinois carrots be ready to harvest?

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

More for Illinois

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