Growing romanesco in zone 7a

(Zone 7a = an average winter low of 0°F to 5°F.)

In USDA zone 7a, the typical last spring frost is April 16 and the first fall frost is October 25. Here is when to plant romanesco against those dates.

Start seeds indoorsMarch 5 to March 19

Transplant outdoorsApril 16

Expected harvestJune 30 to July 25About 75 to 100 days from transplanting.

These are zone 7a averages

Computed from 4,863 ZIP codes in zone 7a. 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 romanesco from University of Wisconsin-Madison Division of Extension. Zone dates are medians; local conditions vary.