Growing black-eyed susan in zone 10a
(Zone 10a = an average winter low of 30°F to 35°F.)
In USDA zone 10a, the typical last spring frost is frost-free and the first fall frost is frost-free. Here is when to plant black-eyed susan against those dates.
Your area is effectively frost-free, so frost-anchored timing does not apply. Plant by soil temperature and season instead; see the plant guide.
See the full black-eyed susan guideThese are zone 10a averages
Computed from 1,125 ZIP codes in zone 10a. 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 black-eyed susan from University of Wisconsin-Madison Division of Extension (Wisconsin Horticulture). Zone dates are medians; local conditions vary.