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Sprout Authority

Growing broccoli in zone 5a

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

Start seeds indoorsFebruary 22 to March 8
Transplant outdoorsApril 12 to April 19
Direct sow outdoorsApril 12 to April 19

These are zone 5a averages

Computed from 2,383 ZIP codes in zone 5a. 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 broccoli from Utah State University Extension. Zone dates are medians; local conditions vary.