Growing romanesco in zone 8a

(Zone 8a = an average winter low of 10°F to 15°F.)

In USDA zone 8a, the typical last spring frost is March 29 and the first fall frost is November 7. Here is when to plant romanesco against those dates.

Start seeds indoorsFebruary 15 to March 1

Transplant outdoorsMarch 29

Expected harvestJune 12 to July 7About 75 to 100 days from transplanting.

These are zone 8a averages

Computed from 3,407 ZIP codes in zone 8a. 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.