Growing zucchini in zone 9b
In USDA zone 9b, the typical last spring frost is February 1 and the first fall frost is December 9. Here is when to plant zucchini against those dates.
Direct sow outdoorsFebruary 1 to February 15
Expected harvestMarch 28 to April 11About 55 to 55 days from sowing.
These are zone 9b averages
Computed from 2,081 ZIP codes in zone 9b. Your town's frost dates vary; enter your ZIP for dates built on your nearest weather station.
Get my exact datesUSDA 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 zucchini from Clemson Cooperative Extension, Home & Garden Information Center. Zone dates are medians; local conditions vary.