Growing tomatillo in zone 4b

(Zone 4b = an average winter low of -25°F to -20°F.)

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 tomatillo against those dates.

Start seeds indoorsMarch 20 to April 10

Transplant outdoorsMay 15 to May 22

Direct sow outdoorsApril 24

Expected harvestJuly 14 to August 5About 60 to 75 days from transplanting.

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