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Sprout Authority

Growing parsnip in zone 4b

In USDA zone 4b, the typical last spring frost is May 8 and the first fall frost is October 1. Here is when to plant parsnip against those dates.

Direct sow outdoorsApril 17 to April 24
Expected harvestJuly 26 to August 22About 100 to 120 days from sowing.

These are zone 4b averages

Computed from 1,251 ZIP codes in zone 4b. 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 parsnip from Utah State University Extension. Zone dates are medians; local conditions vary.