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When to plant tulips in zone 6b

In zone 6b, where the last spring frost typically comes around April 23, plant September 10 to November 5.

The zone 6b schedule for tulips

Plant for a fall crop
September 10 to November 5

From the median frost dates of the NOAA stations assigned to the 4,514 ZIP codes in zone 6b, and the timing recommended by Cooperative Extension guides for tulips.

Frost risk in zone 6b

Zones are based on winter cold, not on frost dates, so the last spring frost varies a lot within a zone. Across zone 6b, the typical last frost ranges from about April 10 in the earliest tenth of ZIP codes to May 6 in the latest tenth, and the first fall frost from October 9 to October 29. For a typical place in the zone:

  • April 8Risky: a later frost happens in 9 years out of 10
  • April 23Typical: frost after this date in half of years
  • May 9Safe: a later frost only 1 year in 10

Your dates for tulips

Set your ZIP code at the top of the page and we will work out when to plant tulips 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

Tulips in zone 6b cities

CityTypical last frostPlantFall
Columbus, OHApr 18—Sep 15 to Nov 10
Boston, MAApr 4—Sep 28 to Nov 23
Detroit, MIApr 21—Sep 19 to Nov 14
Kansas City, MOApr 4—Sep 21 to Nov 16
Cleveland, OHApr 8—Oct 1 to Nov 26
Cincinnati, OHApr 16—Sep 13 to Nov 8
Pittsburgh, PAApr 24—Sep 15 to Nov 10
Buffalo, NYApr 24—Sep 14 to Nov 9
Toledo, OHApr 20—Sep 15 to Nov 10
Boise City, IDApr 24—Sep 9 to Nov 4
Spokane, WAApr 26—Sep 3 to Oct 29
Rochester, NYApr 24—Sep 13 to Nov 8

How to grow tulipsAll zonesTulips in zone 6aTulips in zone 7aAbout zone 6b

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