Growing cauliflower in zone 3a

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 cauliflower against those dates.

Start seeds indoorsMarch 27 to April 10

Transplant outdoorsMay 15 to May 22

Direct sow outdoorsMay 15 to May 22

Plant in fallJune 27 to August 1

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 cauliflower from Utah State University Extension. Zone dates are medians; local conditions vary.