Growing kohlrabi in zone 3a

(Zone 3a = an average winter low of -40°F to -35°F.)

In USDA zone 3a, the typical last spring frost is May 29 and the first fall frost is September 5. Here is when to plant kohlrabi against those dates.

Direct sow outdoorsMay 1 to May 15

Expected harvestJune 20 to July 14About 50 to 60 days from sowing.

Plant in fallJune 13 to July 11

These are zone 3a averages

Computed from 17 ZIP codes in zone 3a. Your town's frost dates vary; enter your ZIP for dates built on your nearest weather station.

Get my exact dates

USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service / Oregon State University PRISM Group. NOAA National Centers for Environmental Information, U.S. Climate Normals 1991-2020. Planting windows for kohlrabi from Iowa State University Extension and Outreach. Zone dates are medians; local conditions vary.