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Sprout Authority

Growing broccoli in zone 5b

In USDA zone 5b, the typical last spring frost is May 1 and the first fall frost is October 10. Here is when to plant broccoli against those dates.

Start seeds indoorsFebruary 20 to March 6
Transplant outdoorsApril 10 to April 17
Direct sow outdoorsApril 10 to April 17

These are zone 5b averages

Computed from 2,843 ZIP codes in zone 5b. 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.