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When to plant cilantro in zone 4b

In zone 4b, where the last spring frost typically comes around May 8, start cilantro indoors March 27 to April 10 and plant out May 8 to 15.

The zone 4b schedule for cilantro

Start seeds indoors
March 27 to April 10
Plant out
May 8 to 15
Sow outdoors
April 10 to May 15

From the median frost dates of the NOAA stations assigned to the 1,164 ZIP codes in zone 4b, and the timing recommended by Cooperative Extension guides for cilantro.

Frost risk in zone 4b

Zones are based on winter cold, not on frost dates, so the last spring frost varies a lot within a zone. Across zone 4b, the typical last frost ranges from about May 1 in the earliest tenth of ZIP codes to May 25 in the latest tenth, and the first fall frost from September 22 to October 8. For a typical place in the zone:

  • April 26Risky: a later frost happens in 9 years out of 10
  • May 8Typical: frost after this date in half of years
  • May 22Safe: a later frost only 1 year in 10

Your dates for cilantro

Set your ZIP code at the top of the page and we will work out when to plant cilantro where you live, from the frost records of the nearest NOAA weather station. Your ZIP code is remembered on this device only.

Enter your ZIP code

Cilantro in zone 4b cities

CityTypical last frostStart indoorsPlant out
Rochester, MNApr 30Mar 19 to Apr 2Apr 30 to May 7
Duluth, MNMay 6Mar 25 to Apr 8May 6 to 13
Lakeville, MNMay 2Mar 21 to Apr 4May 2 to 9
St. Cloud, MNMay 7Mar 26 to Apr 9May 7 to 14
Eau Claire, WIMay 8Mar 27 to Apr 10May 8 to 15
Great Falls, MTMay 19Apr 7 to 21May 19 to 26

How to grow cilantroAll zonesCilantro in zone 4aCilantro in zone 5aAbout zone 4b

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